Database: MEDLINE <: biomedical, nursing & dental literature, 1966 - Nov 2000.> Search Strategy (You Saved Citations 1-95 From Set 58): ----------------------------------------------------------------------------- 1 Dental cavity preparation/ 4902 2 ((dental or cavit$3) adj5 (design$3 or outline$1 or form$1 4896 or extension$1 or prepar:)).mp. 3 ((convention$2 or amalgam or silver or copper) adj3 4076 (prepar: or restor: or fill$3 or cavit$3)).mp. 4 ((conservative or ultraconservative or ultra-conservative) 457 adj5 (prepar: or restor: or fill$3 or cavit$3)).mp. 5 ((tunnel: or slot: or adhesive: or saucer:) adj5 (prepar: 1162 or restor: or fill$3 or cavit$3)).mp. 6 ((resin or composite$1) adj5 (prepar: or restor: or fill$3 4679 or cavit$3)).mp. 7 (air adj (abrasion: or abrad:) adj5 (prepar: or restor: or 26 fill$3 or cavit$3)).mp. 8 ((minimal or prevent:) adj5 (prepar: or restor: or fill$3 4331 or cavit$3)).mp. 9 (extension adj3 prevent:).mp. 298 10 Dental restoration, permanent/ 10620 11 or/1-10 27229 12 Dental restoration failure/ 810 13 (restoration$1 or filling$1 or implant$1 or bridge$1 or 133863 crown$1 or inlay$1 or denture$1).mp. 14 (survival$1 or failure$1 or longevity or durability or 554896 success: or survival).mp. 15 ((restoration$1 or filling$1 or implant$1 or bridge$1 or 5015 crown$1 or inlay$1 or denture$1) adj5 (survival$1 or failure$1 or longevity or durability or success: or survival)).mp. 16 Survival analysis/ 22680 17 Prosthesis failure/ 7542 18 exp treatment outcome/ 97272 19 co.fs. 842195 20 exp cohort studies/ 369269 21 prognosis/ 161611 22 exp mortality/ 111289 23 exp morbidity/ 106755 24 (natural adj history).ti,ab. 14680 25 prognos$.ti,ab. 128240 26 course.ti,ab. 193298 27 predict$.ti,ab. 237169 28 exp "Outcome assessment (health care)"/ 105414 29 outcome$1.ti,ab. 174575 30 (inception adj cohort$1).ti,ab. 381 31 disease progression/ 13155 32 exp survival analysis/ 28366 33 Recurrence/ 79560 34 ((recurr: or secondary) adj caries).mp. 476 35 exp risk/ 228636 36 or/12,15-35 2016709 37 (class adj ("1" or "one" or "I")).mp. 24724 38 (class adj ("2" or "two" or "II")).mp. 31852 39 ((proximo: or proximal: or approximal: or occlusal:) adj5 1978 (prepar: or restor: or fill$3 or inlay$2 or cavit$3)).mp. 40 Dental amalgam/ 6177 41 exp Composite resins/ 9877 42 (resin$1 adj3 composite$1).mp. 9146 43 exp Molar/ 12309 44 or/37-43 75630 45 11 and 36 and 44 1510 46 "in vitro"/ 292878 47 (disease$1 adj free adj (survival or patient$1)).mp. 6869 48 microleakage.mp. 973 49 (marginal adj (leakage or scaling)).mp. 312 50 exp Tooth demineralization/di 998 51 (bond adj strength).mp. 1894 52 exp Malocclusion/ 19322 53 malocclusion$1.mp. 16835 54 or/46-53 323260 55 45 not 54 1312 56 limit 55 to (human and english language and yr=1975-2000) 1037 57 exp Dentistry/ 208051 58 56 and 57 995 59 from 58 keep 1-300 300 60 from 58 keep 1-300 300 61 from 58 keep 301-600 300 62 from 58 keep 601-900 300 63 from 58 keep 901-995 95 *************************** <1> UI - 86067372 AU - Mjor IA TI - Frequency of secondary caries at various anatomical locations. SO - Operative Dentistry 1985 Summer;10(3):88-92 <2> UI - 86029044 AU - Hunter B TI - Survival of dental restorations in young patients. SO - Community Dentistry & Oral Epidemiology 1985 Oct;13(5):285-7 AB - The aim of this study was to show how the survival of restorations placed in teeth of young patients varied with the age of the patient at the time of treatment. Data from the treatment records of 113 regularly attending patients at one practice were collected, and the fate and survival of 1327 restorations was determined from the sequences of treatment of each permanent tooth. Occlusal restorations occurred most frequently (37.6%) and together with the MO and DO restorations (22.6%) accounted for more than half of the restorations in the study. The proportion of replaced restorations increased with increasing patient age at the time of treatment, from 33% to 56%. The survival of all restorations improved the older the patient at the time of treatment, from 40% to 77% surviving 5 yr. The implications for the treatment of carious young permanent teeth are considered. <3> UI - 85293056 AU - Klausner LH AU - Charbeneau GT TI - Amalgam restorations: a cross-sectional survey of placement and replacement. SO - Journal of Michigan Dental Association 1985 Jun;67(6):249-52 <4> UI - 85290364 AU - Tonn EM AU - Ryge G TI - Two-year clinical evaluation of light-cured composite resin restorations in primary molars. SO - Journal of the American Dental Association 1985 Jul;111(1):44-8 AB - The restorations were evaluated at baseline, and at 6, 12, and 24 months by two trained examiners. In the system used, the highest, most desirable rating is Alfa. Of the restorations evaluated at 24 months, 99% had Alfa ratings for color match, 87% had Alfa ratings for no discoloration at cavosurface margins, and 86% had Alfa ratings for no loss of anatomic form. In addition, 75% of the restorations had Alfa ratings for margin adaptation, and 91% had Alfa ratings for no recurrent caries at the 24-month evaluation. In conclusion, the light-cured composite resin restorative material functioned well at the 12- and 24-month evaluation periods, when used in primary molars. <5> UI - 85300365 AU - Qvist V AU - Strom C AU - Thylstrup A TI - Two-year assessment of anterior resin restorations inserted with two acid-etch restorative procedures. SO - Scandinavian Journal of Dental Research 1985 Aug;93(4):343-50 AB - Fifty-two pairs of Class III restorations in a microfilled resin Silar were inserted in acid-etched cavities. A bevel preparation was performed along the margin of one cavity (A) whereas the other cavity was treated with the surface-active comonomer NPG-GMA before filling (B). After finishing of the restorations, the surface of the type B filling was re-etched and covered with a layer of non-composite, low-viscous resin. Following a 2-yr observation period 65 restorations were classified as "good", 33 were "adequate" and 4 were "unsatisfactory" or were replaced during the study period. The only significant difference between type A and type B restorations was marginal discolorations which most frequently were observed along the beveled type A restorations. The occurrence of such failures was increased by marginal deficiencies and occlusion/articulation on the restorations. <6> UI - 85226049 AU - Stanley A TI - 'The longevity of occlusal amalgam restorations in first permanent molars of child patients' [letter]. SO - British Dental Journal 1985 Mar 23;158(6):201 <7> UI - 85237118 AU - Tjan AH AU - Miller GD AU - Sarkissian R TI - Internal escape channel to improve the seating of full crowns with various marginal configurations: a follow-up study. SO - Journal of Prosthetic Dentistry 1985 Jun;53(6):759-63 AB - The effectiveness of an internal escape channel in improving the marginal adaptation of full crowns with various marginal configuration was investigated. Full crowns with 90-degree shoulders had a vertical discrepancy comparable to those of crowns with accentuated finish lines. Although an internal escape channel significantly improved the seating of a full crown with a 90-degree shoulder and 45-degree level, its vertical discrepancy was much higher than those of crowns with an accentuated finish line or a 90-degree shoulder. <8> UI - 85210639 AU - Rothschild HL TI - Cross-arch splinting with resin-bonded retainers. SO - Journal of Prosthetic Dentistry 1985 May;53(5):627-8 AB - The procedure described can provide innovative cross-arch splinting for patients. The longevity of resin-bonded restorations has not been determined, but the procedure is promising, economical, and reversible. These facts should be made available to patients during presentation of the treatment plan. <9> UI - 85210609 AU - Staninec M AU - Mochizuki A AU - Tanizaki K AU - Fukuda K AU - Tsuchitani Y TI - Effect of etching and bonding on recurrent caries in teeth restored with composite resin. SO - Journal of Prosthetic Dentistry 1985 Apr;53(4):521-5 <10> UI - 85204740 AU - Halpern BG TI - Restoration of endodontically treated teeth. A conservative approach. SO - Dental Clinics of North America 1985 Apr;29(2):293-303 AB - Available long-term follow-up on the restoration of pulpless teeth is minimal when compared with traditional techniques such as cast crowns and amalgam restorations. It is important to note that no single technique is ideally suited to restore all pulpless teeth. The restorative technique selected should be designed so that functional forces do not put undue strain on the cusps, roots, or incisal edge of the tooth. In addition, pin-composite or pin-amalgam restorations and no crown may be used as the final restoration, even if not ideally suited as the treatment of choice in the following circumstances: Questionable endodontic or prosthodontic prognosis; Economic factors; Medically compromised patients; Teeth not receptive to dowels. Thus, with careful attention to diagnosis and treatment planning, various modalities of treatment may be utilized to conservatively restore the pulpless tooth. <11> UI - 85204736 AU - Laswell HR AU - Welk DA TI - Rationale for designing cavity preparations. [Review] [31 refs] SO - Dental Clinics of North America 1985 Apr;29(2):241-9 AB - Increased resistance to caries, increased dental awareness, superior diagnostic capabilities, better illumination, optical aids that significantly enhance vision, improved and standardized materials for restoration, and a deeper understanding of the caries process enable a far more conservative approach to tooth preparation. The dentist can concentrate on preserving as much sound tooth structure as possible with less attention being devoted to resistance and retention form that previously demanded in bulk restorations and massive channels and locks that are no longer appropriate. Although caries inhibitory effects have been shown with materials such as silicate cement, glass ionomers, and resins that leach fluoride, in general, dentists should not rely on restorative materials to inhibit the development of future decay. Characteristics of the carious lesion are unique for each tooth according to many factors centering around the plaque pattern for that tooth and not according to zones of natural susceptibility or immunity strictly dictated by morphology. Therefore, no single cavity preparation duplicated from a textbook is likely to be satisfactory for an individual tooth. Furthermore, novices learning the subject of cavity preparation often leave decalcified enamel when they attempt to replicate under clinical conditions that which they have learned in technique courses. This is the major invitation to future caries reappearing adjacent to restorations. Also, failure to duplicate the exact morphology of the tooth surface that has been replaced is likely to alter the pattern of plaque accumulation and create other caries prone areas.(ABSTRACT TRUNCATED AT 250 WORDS) [References: 31] <12> UI - 85149832 AU - Walls AW AU - Wallwork MA AU - Holland IS AU - Murray JJ TI - The longevity of occlusal amalgam restorations in first permanent molars of child patients. SO - British Dental Journal 1985 Feb 23;158(4):133-6 <13> UI - 85149818 AU - Brown D TI - The development of improved amalgam alloys. SO - British Dental Journal 1984 Dec 22;157(12):427-31 <14> UI - 85115970 AU - Linde LA TI - The use of composites as core material in root-filled teeth. II. Clinical investigation. SO - Swedish Dental Journal 1984;8(5):209-16 AB - 49 patients who during a period of 10 years have been provided with gold crowns and composite cores, both as separate crowns and in bridges, have been followed up. The composite cores have been reinforced and retained in their roots, almost in every case by screw-posts. The basis for evaluation has been radiographs taken before the commencement of treatment and at the follow-up 2-10 years later together with clinical examination of the restorations. The aim has been to determine whether the restorations continue to function satisfactorily or if failures have occurred. Of the 51 teeth which were available for reexamination 43 were found to be functioning satisfactorily at the follow-up. In one case only the gold crown had loosened from its core. In the remaining seven unsuccessful cases the cement retention between the crowns and cores were intact and the teeth had been lost because of root fracture, secondary caries and/or inadequate post retention. <15> UI - 85082419 AU - Hirt T AU - Lutz F AU - Roulet JF TI - In vivo evaluation of occlusal wear of two experimental composites versus amalgam. SO - Journal of Oral Rehabilitation 1984 Nov;11(6):511-20 AB - Two experimental inhomogeneous microfilled composites with spherical prepolymerized particles and an interpenetrating network (IPN), which provides a stable bond between prepolymerized spheres and the matrix (B-21 and B-51), and amalgam were used for Class II MOD fillings in mandibular molars. After 3 and 6 months of clinical use, wear of the material was measured with a replica technique and a modified surface roughness test. The failure mode was analysed with SEM photographs also using a replica technique. After 6 months the wear of the composites in the occlusal contact area was more than twice as high as the substance loss of amalgam. It was concluded that the composites were not suitable for fillings bearing occlusal load. However, the failure mode seen in the SEM for B-21 indicated that the IPM leads to a stable incorporation of the spherical prepolymerized particles into the matrix. Due to its good surface characteristics B-21 should be further investigated for its use as an anterior composite. B-51 was especially designed as a posterior composite. Beside the construction elements of B-21 it contained also barium glass spheres to obtain radiopacity. This hybrid construction failed due its wear mode. <16> UI - 85024705 AU - Derand T AU - Johansson B TI - Experimental secondary caries around restorations in roots. SO - Caries Research 1984;18(6):548-54 <17> UI - 85037286 AU - Beere JD AU - Cautley AJ AU - Stokes AN TI - Composite-resin restorations of the incisal edges of anterior teeth: an assessment after 8-9 years. SO - New Zealand Dental Journal 1984 Jul;80(361):72-4 <18> UI - 85031379 AU - Maryniuk GA TI - In search of treatment longevity--a 30-year perspective. [Review] [41 refs] SO - Journal of the American Dental Association 1984 Nov;109(5):739-44 AB - Consumers spent $10 billion on restorative dental treatment in 1979. Little information is available regarding the life expectancy of these restorations or what proportion of these restorations replaces previous ones. A critical literature review was presented, covering all available longevity data of posterior restorations. Necessary methodologic standards for evaluation of the studies were outlined and used in the review. The lack of these critical variables--patient selection, missing follow-up data, and judgment criteria for determining need for replacement or failure (or both)--minimized the usefulness of the results. Study results are generalizable only to similar patient populations and not all patients. Much more controlled research needs to be done. [References: 41] <19> UI - 85009367 AU - Weed RM AU - Baez RJ TI - A method for determining adequate resistance form of complete cast crown preparations. SO - Journal of Prosthetic Dentistry 1984 Sep;52(3):330-4 AB - A diagram with various degrees of occlusal convergence, which takes into consideration the length and diameter of complete crown preparations, was designed as a guide to assist the dentist to obtain adequate resistance form. To test the validity of the diagram, five groups of complete cast crown stainless steel dies were prepared (3.5 mm long, occlusal convergence 10, 13, 16, 19, and 22 degrees). Gold copings were cast for each of the 50 preparations. Displacement force was applied to the casting perpendicularly to a simulated 30-degree cuspal incline until the casting was displaced. Castings were deformed at margins except for the 22-degree group. Castings from this group were displaced without deformation, and it was concluded that there was a lack of adequate resistance form as predicted by the diagram. The hypothesis that the diagram could be used to predict adequate or inadequate resistance form was confirmed by this study. <20> UI - 84257186 AU - Paterson N TI - The longevity of restorations. A study of 200 regular attenders in a general dental practice. SO - British Dental Journal 1984 Jul 7;157(1):23-5 <21> UI - 84265492 AU - Smales RJ AU - Gerke DC TI - Clinical evaluation of four high-copper amalgam alloys. SO - Journal of Dentistry 1984 Jun;12(2):127-34 <22> UI - 84267113 AU - Fisher D AU - Markitziu A AU - Fishel D AU - Brayer L TI - A 4 year follow-up study of alveolar bone height influenced by two dissimilar Class II amalgam restorations. SO - Journal of Oral Rehabilitation 1984 Jul;11(4):399-405 AB - Fifty-four paired, approximal amalgam fillings, extended (E) versus unextended (NE) were placed in forty-three patients and followed up to 4 years. Yearly measurements between the alveolar crest and (a) the apical margin of the fillings (E, NE), and (b) the cemento-enamel junction of the control group, were performed using bite-wing radiographs joined to a translucent grid magnified ten-fold. The rate of alveolar crest resorption was similar for the control (C) and the unextended filling (NE) and reached 0.45 mm after 4 years of follow-up. The resorption of the alveolar crest under the extended (E) filling was significantly higher and reached 0.80 mm after 4 years (P less than 0.001). <23> UI - 84260381 AU - Rytomaa I AU - Murtomaa H AU - Turtola L AU - Lind K TI - Clinical assessment of amalgam fillings. SO - Community Dentistry & Oral Epidemiology 1984 Jun;12(3):169-72 AB - The purpose of this study was to determine the quality of amalgam fillings among 20-yr-old Helsinki University students. The quality of the fillings was evaluated for the teeth 16 and 46. The marginal adaptation, anatomical form and surface texture of the fillings were evaluated and the filled surfaces were classified as being good, or requiring refinishing or replacement. The age of the fillings and how often they had been replaced were also evaluated from previous records. 47% of the filled surfaces were classified as good, 43% needed to be refinished and 10% needed replacement. The reasons for refinishing a filling were faults in surface texture (61%), anatomical form (23%) or marginal adaptation (16%). The reasons for replacing a filling were fractured filling (38%), secondary caries or incorrect marginal adaptation (23%), inadequate anatomical form (13%) or poor surface texture (26%) which could not be refinished. The mean age of all fillings was 6.6 yr. The mean age of fillings which needed replacement was 7.3 yr. The maxillary first molar had been filled an average of 2.0 times and the mandibular first molar 2.2 times by the age of 20 yr. <24> UI - 84220857 AU - Huggins HA TI - Mercury: a factor in mental disease? Part 2. A review of the literature. SO - Oral Health 1984 Jan;74(1):69-71 <25> UI - 84186413 AU - Chalkley Y AU - Denehy GE AU - Schulein TM TI - Teaching dental anatomy with light-activated resins. SO - Journal of Dental Education 1984 Apr;48(4):211-2 AB - A method has been described in which light-activated resins are incorporated into the dental anatomy laboratory. This procedure is a valuable addition to the anatomy course because students (1) work with a restorative material appropriate for anterior teeth, (2) learn the unique properties of the light-activated resins, and (3) apply the principles of dental anatomy to a clinically relevant task. <26> UI - 84196128 AU - Matsson L AU - Granath L AU - Ryge G TI - Early prediction of long-term margin adaptation of dental amalgam restorations. SO - Scandinavian Journal of Dental Research 1984 Apr;92(2):172-6 AB - The present study assessed the predictive value of an indirect metric method for the early detection of margin defects of amalgam restorations, relative to results using a direct clinical method. The material consisted of plaster casts of amalgam restorations taken at 1- and 2-yr examinations of four different amalgam-treatment combinations. The widest margin defect of each restoration was measured in a dissection microscope equipped with a metric scale in the ocular. The ranking order obtained from the metric measurements of the different amalgam-treatment combinations after 1 and 2 yr was compared with that obtained from the direct clinical evaluation after 2 yr. Finally, the rank order of those restorations rated Alfa (no visible evidence, along the margin, of a crevice (ditch) into which an explorer will penetrate) at the 2-yr clinical examination was studied in relation to the 1-yr metric measurements. For the total material, the rank order based on the metric measurements of the margin defects of the four amalgam-treatment combinations agreed with that obtained with the clinical rating. In the 1-yr data, where the metric technique was applied only on the restorations rated Alfa at the 2-yr clinical evaluation, the order of two neighboring combinations was reversed; otherwise the same rank order was obtained. It is recommended that the clinical performance of new brands of amalgam alloy are tested in short-term, small-scale studies using the metric evaluation technique, before more extensive field studies over longer periods are instituted, in order to sort out unsatisfactory materials and treatment techniques at an early stage. <27> UI - 84159091 AU - Mathewson RJ TI - Restoration of primary teeth with amalgam. SO - Dental Clinics of North America 1984 Jan;28(1):137-43 AB - Dental amalgam used by the dentist as a restorative material should meet the following criteria: (1) a reduced risk of marginal failure with a minimal risk of recurrent caries, (2) resistance to creep and corrosion, and (3) the characteristics for mixing, inserting, and polishing that are optimally duplicated. To achieve these criteria, the optimal amalgam technique includes the use of the following: Rubber dam whenever possible Conservative cavity preparations to offset the amalgam's inherent weak physical properties A high copper alloy combined with the appropriate amount of mercury for optimal plasticity and to reduce susceptibility to creep and corrosion Trituration, precondensation, and condensation methods that are consistently practiced by the dental assistant and dentist A burnishing scheme combined with a subsequent polishing method to complete the final amalgam restoration. <28> UI - 84162921 AU - Zimmerman BF AU - Rawls HR AU - Querens AE TI - Prevention of in vitro secondary caries with an experimental fluoride-exchanging restorative resin. SO - Journal of Dental Research 1984 May;63(5):689-92 AB - We investigated the development of artificial caries lesions adjacent to experimental composite resins which release fluoride by ion exchange. Overall, compared with both a commercial, non-fluoride composite and a restorative silicate cement, the cavity walls and tooth surfaces immediately adjacent to the experimental resins developed fewer and/or smaller lesions. When lesions did develop, they did not penetrate as far along the cavity walls adjacent to the experimental materials. In general, the degree of protection imparted by the fluoride composites increased with increasing fluoride content. These results demonstrate the potential of these adhesive resins for restorative and other dental applications in which an extended fluoride presence would be of benefit. <29> UI - 84168915 AU - Payne RW AU - Burns RA AU - Davis WJ TI - The controversy of mercury in amalgam restorations: review of the literature. SO - Ohio Dental Journal 1984 Jan;58(1):27-8 <30> UI - 84132713 AU - Anonymous TI - Consequences of mercury exposure in dentistry: a review of the literature. [Review] [62 refs] SO - Florida Dental Journal 1983 Winter;54(4):17-9, 21 <31> UI - 84085330 AU - Faunce F TI - Management of discolored teeth. [Review] [30 refs] SO - Dental Clinics of North America 1983 Oct;27(4):657-70 <32> UI - 83293108 AU - Gwinnett AJ TI - Bonding failures in composite resin restorations. SO - Journal of the Massachusetts Dental Society 1983 Summer;32(2):63, 65, 67 passim <33> UI - 83268383 AU - Wilder AD AU - May KN Jr AU - Leinfelder KF TI - Three-year clinical study of UV-cured composite resins in posterior teeth. SO - Journal of Prosthetic Dentistry 1983 Jul;50(1):26-30 AB - Four proprietary composite resins cured with ultraviolet light were inserted into Class I and II cavity preparations. The restorations were evaluated over a 3-year period for color match, interfacial staining, secondary caries, loss of anatomic form, marginal adaptation, and surface texture. The percent of restorations exhibiting no generalized loss of anatomic form ranged from 47% to 93%. <34> UI - 84007290 AU - Vrijfoef MM AU - Spanauf AY AU - Vermeulen AH AU - Favero GA AU - Cordioli GP AU - Favero L TI - Durability and indications of amalgam restorations. SO - Giornale di Stomatologia e di Ortognatodonzia 1982 Dec;1(4):11-5 <35> UI - 82283567 AU - Allsopp P AU - Johns M TI - Restored, totally submerged deciduous molar. Case report. SO - Australian Dental Journal 1982 Feb;27(1):27-9 <36> UI - 82283319 AU - Burch JG AU - Garrity T AU - Schnecker D TI - Periodontal pocket depths related to adjacent proximal tooth surface conditions and restorations. SO - Arkansas Dental Journal 1982 Jun;52(2):19-20, 29 <37> UI - 82143411 AU - Gibson GB AU - Richardson AS AU - Patton RE AU - Waldman R TI - A clinical evaluation of occlusal composite and amalgam restorations: one- and two-year results. SO - Journal of the American Dental Association 1982 Mar;104(3):335-7 AB - A two-year study was conducted to compare the qualitative advantages, if any, of a conventional, cold-curing composite resin to amalgam in occlusal Class I cavities in posterior teeth. The composite was placed into modified, conservative cavity preparations using the acid etch technique. Sixty-one pairs of contralateral restorations were evaluated. Forty-six percent of the amalgams and 42.6% of the composites were considered sound. The major deficiency of each material was rough or chipped margins of the amalgams (38%) and worn surfaces of the composites (26%). The use of conservative cavity preparations and the acid-etch technique with bonding agent and final glaze improved the longevity of the composite restorations compared to previous studies. However, the improvement does not suggest that this method will have a long-term effect on clinical success nor does it indicate that composite is superior to amalgam other than in marginal integrity and esthetics. <38> UI - 82120713 AU - Ingers G AU - Cromvik U AU - Gleerup A AU - Ronnerman A TI - The effect on space conditions of unilateral grinding of carious proximal surfaces of primary molars--a longitudinal study. SO - ASDC Journal of Dentistry for Children 1982 Jan-Feb;49(1):30-4 <39> UI - 82241360 AU - Tanizaki K AU - Mochizuki A AU - Kobayashi S AU - Fukuda K AU - Staninec M AU - Inoue K AU - Tsuchitani Y TI - Effect of etchant and bonding agent on the inhibition of secondary caries in composite resin restorations. SO - Journal of the Osaka University Dental School 1981 Dec;21:145-52 <40> UI - 82163793 AU - Going RE TI - Restoring damage caused by wisdom teeth. SO - Compendium of Continuing Education in Dentistry 1981 May-Jun;2(3):147-57 <41> UI - 82053755 AU - Dawson LR AU - Simon JF Jr AU - Taylor PP TI - Use of amalgam and stainless steel restorations for primary molars. SO - ASDC Journal of Dentistry for Children 1981 Nov-Dec;48(6):420-2 AB - The findings of this study agree with those of Braft, namely, stainless steel crowns for primary molars are superior to multisurface amalgams. This is viewed in terms of the number of teeth requiring retreatment. Because of the eventual loss of primary molars, the actual longevity of restorations may be difficult to establish. Based on the information found in this study it is concluded that: In primary first molars, 75 percent of one-surface and 70 percent of two-surface amalgams will need replacement before the age of eight. In primary second molars, 32 percent of one-surface and 71.4 percent of two-surface amalgams will need replacement before the age of eight. Stainless steel crowns will need further treatment in 12.8 percent of primary first molars and in 11 percent of second molars. Before the first permanent molars erupt into occlusion (before the age of eight) stainless steel crowns are the treatment of choice, for the primary molars, particularly for multisurface lesions in the primary first molar. <42> UI - 82010289 AU - Blank LW AU - Caffesse RG AU - Charbeneau GT TI - The gingival response to well-finished composite resin restorations: a 28-month report. SO - Journal of Prosthetic Dentistry 1981 Aug;46(2):157-60 <43> UI - 81266696 AU - Koral SM AU - Howell TH AU - Jeffcoat MK TI - Alveolar bone loss due to open interproximal contacts in periodontal disease. SO - Journal of Periodontology 1981 Aug;52(8):447-50 AB - Ninety patient records were examined in order to determine radiographically whether an association between open interproximal contacts and increased alveolar bone loss exists. The amount of alveolar bone in the open contact site was compared to the amount of alveolar bone in the contralateral closed contact site. Open interproximal contacts were not found to be associated with increased alveolar bone destruction in Class, I, III and IV periodontal disease groups. In group of 53 Class II cases, open contacts were found to be associated with an average of 2.4% less relative bone height than contralateral closed contacts. This difference was significant at the 0.01 to 0.02 level. <44> UI - 81216313 AU - Goldberg J AU - Tanzer J AU - Munster E AU - Amara J AU - Thal F AU - Birkhed D TI - Cross-sectional clinical evaluation of recurrent enamel caries, restoration of marginal integrity, and oral hygiene status. SO - Journal of the American Dental Association 1981 May;102(5):635-41 AB - Both marginal quality and oral hygiene status have strong effects on the risk of recurrent caries. Although there was no statistically significant interaction between these two parameters in this study, the influence of each variable was dependent on its severity. There is a difference between the behavior or the likelihood of recurrent caries on occlusal surfaces as compared with smooth surfaces. On the smooth surfaces, there is a continued increased risk with decreasing marginal quality; the occlusal surfaces, however, show no change in vulnerability beyond a modified marginal quality score of 3. Variation in oral hygiene had a more pronounced effect on the probability of recurrent caries of restorations with moderate margin scores than it did on restorations with either very poor or very good cavosurface margins. This work further emphasizes the importance of technically good restorative care at the operative visit, which, coupled with conscientious oral hygiene, should have a positive effect on increasing the longevity of restorations and decreasing the need for replacement. <45> UI - 81207480 AU - Lorton L AU - Brady J TI - Criteria for successful composite resin restorations. SO - General Dentistry 1981 May-Jun;29(3):234-6 <46> UI - 81207832 AU - Crabb HS TI - The survival of dental restorations in a teaching hospital. SO - British Dental Journal 1981 Jun 2;150(11):315-8 <47> UI - 81216746 AU - Starkey P AU - Avery DR AU - Gruner JL AU - Phillips RW TI - A comparison of two resin systems in the restoration of fractured young anterior teeth. SO - Journal Indiana Dental Association 1981 Jan-Feb;60(1):9-14 <48> UI - 81194383 AU - Braly BV AU - Maxwell EH TI - Potential for tooth fracture in restorative dentistry. SO - Journal of Prosthetic Dentistry 1981 Apr;45(4):411-4 AB - Increasing awareness of tooth fracture, both complete and incomplete, as a significant disease entity has led to improved diagnostic techniques. By using compact, easily handled, fiber optic instruments for transillumination and by developing a "predisposition index" to assist in the evaluation of fracture potential, new dimensions have been added in treatment planning, especially for older patients. Prevention of tooth fracture can best be accomplished by utilizing conservative, nontraumatic tooth preparation procedures, understanding predisposing factors, and using full occlusal coverage, circumferentially retained restorations whenever castings are indicated. Effective management of incomplete tooth fracture involves early recognition of the problem, appropriate and timely treatment, and a realistic assessment of the prognosis. <49> UI - 81165476 AU - Osborne JW AU - Binon PP AU - Gale EN TI - Dental amalgam: clinical behavior up to eight years. SO - General Dentistry 1980 Jul-Aug;28(4):22-5 <50> UI - 81092801 AU - Mahler DB AU - Marantz RL TI - Clinical assessments of dental amalgam restorations. SO - International Dental Journal 1980 Dec;30(4):327-34 AB - In assessing the performance of amalgam restorations in most clinical studies, the significant factor to evaluate is marginal fracture. The clinical relevance of marginal fracture is reflected in its relationship to the presence of secondary caries. Furthermore, whereas most other failures can be avoided by proper operator technique, marginal fracture is an inherent deficiency of amalgam restorations. Although the extent of marginal fracture can be influenced by many factors, the nature of the alloy has been found to play a major role. However, for a properly conducted study, other factors which include the operator, patient and tooth type should be acknowledged in the research design. To evaluate marginal fracture in clinical studies, the occlusal photograph--visual assessment technique is a most sensitive method and the scoring of test restorations according to a standard set of photographs has several significant advantages. <51> UI - 80251386 AU - Osborne JW AU - Gale EN TI - A three-year clinical assessment of a composite resin and its radiopaque counterpart. SO - Journal of Prosthetic Dentistry 1980 Aug;44(2):164-6 AB - Two composite resin materials, one containing a radiopaque filler, gave similar clinical results over the 3 year test period. There was a color shift toward a darker restoration, and a marginal stain occurred. Loss of marginal integrity was slight, and only three restorations showed wear or loss of material. There were no recurrent caries. It should be reemphasized that the major advantage of the radiopaque material is the capability of radiographic evaluation. Voids, caries, improper contours, and overhangs may be detected with this material. <52> UI - 80212217 AU - Paunio P AU - Eriksson AL AU - Isotupa K TI - Suitability of ion-crowns for the restoration of deciduous molars. SO - Proceedings of the Finnish Dental Society 1980;76(1):25-9 <53> UI - 80206755 AU - Samani SI AU - Harris WT TI - Provisional restorations for traumatically injured teeth requiring endodontic treatment. SO - Journal of Prosthetic Dentistry 1980;44(1):36-9 AB - The acid-etch-composite resin technique is used to retain a provisional restoration during the course of endodontic treatment. As described, the use of a gutta percha cone during the buildup and bonding to adjacent teeth provides the following: (1) good esthetics during endodontic treatment, (2) good support for rubber dam placement, (3) good entry to the canal, (4) good coronal seal for medication within the canal, and (5) good function as required by the provisional crown. <54> UI - 80139477 AU - Tveit AB TI - Fluoride uptake by cavity walls following application of Duraphat around amalgam restorations. SO - Journal of Oral Rehabilitation 1980 Mar;7(2):167-74 AB - This study aimed to assess possible fluoride uptake by cavity walls following a single application of Duraphat around class V or I amalgam restorations which were inserted in seventeen human premolars in vitro and in vivo. Six cavities were lined with one layer of Copalite before insertion of the restorations. After a week in vivo and 12--24 h in vitro, 200--300 micrometers thick longitudinal sections passing through the cavities were prepared. By electron probe microanalysis F concentrations ranging from 2000 to 6000 ppm were measured near the surface of the cavity walls. Copalite seemed to inhibit F uptake. The study indicates that F ions released from the Duraphat varnish have been taken up by the cavity walls. Such uptake may influence development of secondary caries (wall lesions) in connection with amalgam restorations. <55> UI - 80191650 AU - Skogedal O AU - Heloe LA TI - Clinical quality of amalgam restorations. SO - Scandinavian Journal of Dental Research 1979 Dec;87(6):459-61 AB - The clinical quality of 203 mesio-occlusal Class II and 127 buccal Class V restorations of 246 persons aged 25 years were studied. One third of the amalgam restorations were considered to be unacceptable. Marginal overhang was the prevailing type of failure (17%), recurrent caries occurred at 12% of the restorations, unacceptable proximal contact at 10%, unacceptable marginal adaptation at 8% and isthmus fractures at 2%. <56> UI - 80103307 AU - Hotz PR TI - Experimental secondary caries around amalgam, composite and glass ionomer cement fillings in human teeth. SO - SSO: Schweizerische Monatsschrift fur Zahnheilkunde 1979 Sep;89(9):965-86 AB - It was the aim of this in vitro study to examine secondary caries occurring in enamel and dentin adjacent to different filling materials and after different filling methods. The materials used were: amalgam, composite and glass ionomer cement. The highest rate of secondary caries was found on the crown surface as well as root surface of teeth which were conventionally treated with amalgam and composite materials. The preliminary treatment with a copal-ether varnish (Copalite) was of insignificant value. Fluoridation of the cavity walls with a fluoride solution (Elmex-Fluid) resulted a significant cariostatic effect with amalgam- or composite fillings in enamel and in root surfaces. Zones of inhibition of demineralization could be found. The addition of 5% NaF to composite material also produced an inhibition of demineralization, manifesting itself in a reduction of the secondary caries rate and increased percentage of tight margins of the fillings. Although glass ionomer cement has adherent properties to enamel and dentin, a larger percentage of filling-margins, especially of those applied to dentin, were found to be untight. Nevertheless, the demineralizations were not very pronounced and significant zones of inhibition of demineralization were found in the cavity walls and tooth surfaces adjacent to the fillings. The amounts of fluoride released by silicate cement, glass ionomer cement and composites containing 5% NaF were compared. The glass ionomer cement showed higher values than the composite and silicate materials. After 10 days of storage in water, the dosis of fluoride released--by all materials--was 7-20 times less than on the first day. <57> UI - 80071171 AU - Eichner K TI - Conservative and prosthetic rehabilitation procedures in the dentition of old people. SO - International Dental Journal 1979 Dec;29(4):285-97 AB - The therapeutic possibilities of conservative and prosthetic rehabilitation procedures are set out in this survey. In particular the aim was to find out whether these are suitable for retaining functional dentition into old age. The anatomical characteristics (Figs. 1 and 3) and secondary dysgnathic alterations of the dentition in the period of senescence make dental therapy considerably more difficult. The tooth-coloured filling materials do not behave as permanently in the mouth as could be wished. They are unsuitable for use in posterior teeth, and are in urgent need of improvement. The amalgam filling should still be regarded as the agent of choice for treatment of the cheek teeth, although cast precious metal inlays have been successful over a long period of time (Fig. 6). Too little use is made of veneer crowns in the anterior area with increasing age (Fig. 7), although the prospect of long term success is good. It was possible to establish statistically that tooth-coloured plastics are inferior to ceramic and metal ceramic crowns because of the greater retention of plaque. Ceramic should accordingly be preferred even with bridges in the anterior area. The replacement of missing teeth with removable partial dentures is the typical method of dental treatment for the period of senescence (Figs. 10-12). An attempt was made by bringing together various principles of planning and construction to lay down guidelines for dentures in older patients. With prosthetic care the fact that there are large differences in the physical and mental vitality of the older person, and that vitality frequently decreases rapidly for the most varied reasons, should not be overlooked. Even at this stage dentures should still prove functional. <58> UI - 80051436 AU - Mahler DB AU - Marantz RL TI - The effect of time on the marginal fracture behaviour of amalgam. SO - Journal of Oral Rehabilitation 1979 Oct;6(4):391-8 AB - In this study the effect of time on the marginal fracture behaviour of amalgam was determined. Six alloys in clinical service for up to 6 years were used as a data base and occlusal photographs were categorized according to a standard set of photographs depicting varying degrees of marginal fracture. The standard set of photographs was assigned a linear numerical scale, and the index of extent of fracture was considered to be an arithmetic mean based on this linear scale. An observed patient effect and unequal sample size were considered in the determination of both the mean and variance. The results of applying these procedures to the data of this study showed that marginal fracture increased with time for all alloys; that the relative ranking of alloys did not change with time; and that, with certain limitations, early time evaluations can predict long-term behaviour. <59> UI - 79225939 AU - Grondahl HG AU - Hollender L TI - Dental caries and restoration. IV. A six-year longitudinal study of the caries increment of proximal surfaces. SO - Swedish Dental Journal 1979;3(2):47-55 AB - In order to study the progression of proximal caries lesions and the quality of restorations, a sample of individuals in Gothenburg, Sweden was radiographically examined at the ages of 16, 19 and 22. By means of an index system every proximal tooth surface was given a diagnosis and differences between examinations were evaluated by a score system. Of all decayed and filled surfaces observed at the age of 22 more than 70% were already established at the age of 16. During the 16--19 year interval more than twice as many new carious lesions were developed than during the 19--22 year interval. The decrease in the number of new lesions during the last interval was accompanied by a slower progression of already existing lesions. Both factors resulted in a lower mean value with regard to scores during the 19--22 year interval compared with the preceding one. However, great individual differences were noted and 22 percent of the individuals exhibited larger score values during the last interval than during the first. Relatively seen the number of restorations with overhanging margins was lower at the final examination than at the previous ones. <60> UI - 79209935 AU - Reisbick MH TI - Prediciting the clinical success of restorative dental materials. SO - Biomaterials, Medical Devices & Artificial Organs 1979;7(1):89-98 AB - This paper discusses dental restorative resins, alloys, cements and implants and emphasizes the need for useful laboratory information that will predict the clinical behavior of these materials and structures. <61> UI - 79216886 AU - Gorzo I AU - Newman HN AU - Strahan JD TI - Amalgam restorations, plaque removal and periodontal health. SO - Journal of Clinical Periodontology 1979 Apr;6(2):98-105 AB - A total of 156 approximal subgingival amalgam overhanging margins were assessed in the buccal segments of 13 patients for plaque accumulation, gingival inflammation, pocket depth and gingival shrinkage. Recordings were made immediately before and 2, 4 and 8 weeks following scaling, removal of overhangs, and oral hygiene instruction. Surfaces with overhangs were compared with control surfaces, which were either intact or contained supragingival amalgams. Initially it was found that gingival inflammation and pocket depth were more extensive adjacent to subgingival amalgam overhangs than to sound teeth or those with supragingivally located amalgams. This appeared to be due to preferential plaque accumulation in relation to subgingival overhangs. For all parameters compared, differences apparent at the baseline had disappeared by the end of the 8-week study period. Contouring of defective subgingival restorations, followed by effective scaling and oral hygiene instruction produced approximately 1 mn of gingival shrinkage, sufficient in most cases to produce clinical gingival health. Of the 156 subgingival fillings 83 (53%) became supragingival and 43 (28%) reached the gingival crest by the end of the 8-week study period. <62> UI - 79220112 AU - Bailit HL AU - Chiriboga D AU - Grasso J AU - Willemain TR AU - Damuth L TI - A new intermediate dental outcome measure: amalgam replacement rate. SO - Medical Care 1979 Jul;17(7):780-6 AB - The length of time amalgam restorations last before replacement was investigated for use as an intermediate outcome measure in utilization review and quality assurance studies. Based on record data from 37 general dental practices, a determination was made of the average percentage of two- or three-surface amalgams receiving another service at 6, 12, and 24 months from the date of insertion. After 2 years, approximately 13 per cent of the amalgams were replaced, and the estimated median life time for amalgams was between 10 and 14 years. The variation in replacement rates among practices was substantial but was not explained by the technical quality of restorations or several practice characteristics. <63> UI - 79175137 AU - Dent RJ TI - Repair of porcelain-fused-to-metal restorations. SO - Journal of Prosthetic Dentistry 1979 Jun;41(6):661-4 AB - Three techniques have been described which may be used to repair many porcelain-fused-to-metal restorations. These techniques provide an avenue of repair for extensive porcelain-fused-to-metal restorations without remaking the entire prosthesis. The success of the overlay and pin-retained ceramo-metal repairs should be comparable to that of a newly constructed porcelain-fused-to-metal restoration. The composite resin bonded to porcelain repair technique will not have as favorable a prognosis, as composite resins are more subject to wear and are not color stable, and the chemical bond created with silance bonding agents is much weaker than the bond created when porcelain is fused to metal. Success of silance-bonded repairs should not be expected for periods longer than 2 to 3 years. <64> UI - 79173619 AU - Gershen JA AU - Jedrychowski JR TI - The effect of supplemental lecture, evaluation method and instructional type on student performance in a preclinical technique project. SO - Journal of Dental Education 1979 May;43(5):276-80 AB - This study examined two types of instruction, two methods of evaluation, and the effects of a supplemental lecture in teaching a laboratory technique exercise. Students were randomly assigned to one of four groups: (1) self-instruction, self-evaluation; (2) self-instruction, teacher-evaluation; (3) teacher-aided instruction, self evaluation; and (4) teacher-aided instruction, teacher-evaluation. In addition, half of the students in each of the four groups received a supplemental lecture. Ratings of technical performance, a didactic posttest, and project completion time, were used as outcome measures. Of 27 main treatment effects tested, 25 demonstrated no significant differences. This study fails to demonstrate any major advantage of using self versus traditional forms of instruction and evaluation when student performance is the primary consideration. <65> UI - 79130915 AU - Dhuru VB AU - McLachlan K AU - Kasloff Z TI - A photoelastic study of stress concentrations produced by retention pins in amalgam restorations. SO - Journal of Dental Research 1979 Mar;58(3):1060-4 AB - Photoelastic models of pin-amalgam restorations were constructed to simulate different pin-dentin-amalgam relationships. The stress-raising effect of a pin is influenced by the axial stiffness of the pin and its capability of bonding with the amalgam. The stress produced by a very stiff non-bonded pin could cause failure of the restoration. <66> UI - 79089172 AU - Weinstein P AU - Kiyak HA AU - Milgrom P AU - Ratener P AU - Morrison K TI - Manual dexterity as a predictor of quality of care among dental practitioners. SO - Journal of Dental Education 1979 Mar;43(3):165-9 AB - This study explores the relationship between time to complete a manual dexterity exercise and quality of restorative dentistry. Ninety-seven general practitioners volunteered to take part in the study. An average of 14 patients per office were recalled and an average of five recent restorations per patient were examined clinically by trained peer reviewers. Subsequently, 74 of the 97 dentists participated in a session in which the O'Connor Tweezer Dexterity test was administered. Pearson correlations between speed on the test of tweezer dexterity and quality measures indicated that, on the average, those practitioners who took longer to complete the tweezer test achieved significantly higher scores on restorative quality. <67> UI - 80028412 AU - Osborne JW AU - Winchell PG AU - Phillips RW TI - A hypothetical mechanism by which creep causes marginal failure of amalgam restorations. SO - Journal Indiana Dental Association 1978 Jul-Aug;57(4):16-7 <68> UI - 79076405 AU - Dahl JE AU - Eriksen HM TI - Reasons for replacement of amalgam dental restorations. SO - Scandinavian Journal of Dental Research 1978 Sep;86(5):404-7 AB - Recurrent caries appears to be the most frequently occurring reason for replacement of amalgam dental restorations. Recent developments of amalgam alloys have improved the clinical appearance of such fillings but the possible influence on their durability is uncertain. <69> UI - 79068154 AU - Osborne JW AU - Gale EN AU - Chew CL AU - Rhodes BF AU - Phillips RW TI - Clinical performance and physical properties of twelve amalgam alloys. SO - Journal of Dental Research 1978 Nov-Dec;57(11-12):983-8 AB - An assessment of the marginal failure rate of 1,041 restorations of twelve alloys was made at one year. In addition, physical property tests were conducted. A correlation was found between the clinical performance and creep (.79), flow (.62) and 24-hour compressive strength (.60). <70> UI - 79049916 AU - Low T AU - Lee KW AU - von Fraunhofer JA TI - The adaptation of composite materials to etched enamel surfaces. SO - Journal of Oral Rehabilitation 1978 Oct;5(4):349-55 AB - The adaptation of three composite materials and one unfilled bis-GMA resin to etched enamel surfaces was investigated by examining under optical and scanning electron microscopy the adhesive-enamel junction of replicas. The length of the tags and the density of tagging observed on the replicas showed that the three composite materials, Adaptic, Concise and Delphic, adapted to the etched enamel surface equally as well as the unfilled resin Nuva Seal. The results of this study together with available results of mechanical testing and clinical studies allow the conclusion that the successful retention of the composite filling materials to an etched enamel surface is not dependent on the use of an intermediate unfilled resin or bonding agent. <71> UI - 79048861 AU - Dhuru VB AU - Rypel TS AU - Johnston WM TI - Criterion-oriented grading system for preclinical operative dentistry laboratory course. SO - Journal of Dental Education 1978 Sep;42(9):528-31 AB - The object of this study was to evaluate instructor reliabilities when using empirical or traditional and criterion-oriented grading methods. To do so, 52 sample preparations made in plastic teeth by freshman dental students in the preclinical operative dentistry laboratory course were graded by 12 instructors. The preparations included those for amalgam, inlay, and gold foil restorations. The instructors were divided into two groups according to their teaching experience. Intraclass correlation coefficients were calculated by using a one way analysis of variance technique. The criterion method, in general, yielded greater intraclass correlation coefficients. The increase in the intraclass correlation coefficient was found to be significant at the alpha = 0.10 error level for all restorations judged by experienced instructors. The different degrees of increase in correlation may be attributed to the vary ing clinical biases of the instructors and the differences in the types of preparations. <72> UI - 78237095 AU - Silverstone LM TI - Operative measures for caries prevention. SO - Caries Research 1978;12 Suppl 1:103-12 <73> UI - 78220423 AU - Fuks A AU - Shapira J TI - Acid-etch/composite resin restoration of fractured anterior teeth: part II. SO - Journal of Prosthetic Dentistry 1978 Jun;39(6):637-9 <74> UI - 78173750 AU - Flynn M TI - Scanning electron microscope investigation of in vivo performance of eight composite resins. SO - Journal of Prosthetic Dentistry 1978 May;39(5):529-32 AB - Retention. At 6 months, five restorations were lost due to retention failure. The remaining restorations were retained to 24 months and/or 30 months. The study of one material was discontinued because of numerous retention failures. Marginal wear. Facial wear along the margin in the center portion of the restoration was appreciably greater than lingual, proximal, and incisal wear. In general, most composite resins began to display evidence of wear during the first 6 months of service. Over the study period, three restorations were lost because of excessive marginal wear. Surface texture. Most materials were clinically acceptable with regard to surface texture over the course of the study. Extended studies of greater durations are indicated. <75> UI - 78028275 AU - Elderton RJ TI - An objective method for measuring the surface morphology of cavities and restorations in vivo. SO - Journal of Oral Rehabilitation 1977 Oct;4(4):323-34 AB - A method was developed for quantifying morphological characteristics of cavities and restored teeth, in a quest for more knowledge of factors which determine the long clinical success or failure of restorations, and which may therefore be used in making objective assessments of their quality. The method involved obtaining sequential silicone rubber replicas of teeth in vivo, sectioning them in planned planes, and making objective linear and angular measurements directly from X 10 photographs of the resulting profiles and from positive models. It would seem that the method could be applied in a variety of clinical investigations. <76> UI - 78005995 AU - Hill FJ AU - Soetopo TI - A simplified acid-etch technique for the restoration of fractured incisors. SO - Journal of Dentistry 1977 Sep;5(3):207-12 <77> UI - 78000106 AU - Allan DN TI - A longitudinal study of dental restorations. SO - British Dental Journal 1977 Aug 2;143(3):87-9 <78> UI - 77256346 AU - Eriksen HM TI - Exeperimental studies on clinical aspects of composite resins. SO - Norske Tannlaegeforenings Tidende 1977 Sep;87(8):362-70 <79> UI - 77226947 AU - Fischer CH TI - Critical discussion of previous experience and new approaches in the development of composite filling materials. SO - International Dental Journal 1977 Jun 2;27(2):130-8 AB - Following the 1975 report in Chicago, an attempt is made to discover the present position with regard to the development of composite filling materials, and to determine whether further development is necessary or even possible. The reasons for considering clinical trials important are given, and the problem of the chemical bond to hard dental tissues is discussed. The influence of the thermal coefficient of expansion on the marginal seal is discussed in relation to border discolouration, and a critical assessment given of acid etching and remineralization. The significance of wear for the maintenance of contours is pointed out, in particular in connection with occlusal surface fillings in the cheek teeth, as well as the problem of contact-point characterization and fracture strength after repair of an old filling. Improvements in UV light polymerization are described. A critical discussion of the different opinions on the significance of histological findings in relation to pulp tolerance is presented, and finally the significance of water uptake and radiological opacity is discussed. In conclusion indications in relation to the present state of development are listed. <80> UI - 77188258 AU - Myers DR TI - Factors producing failure of class II silver amalgam restorations in primary molars. SO - ASDC Journal of Dentistry for Children 1977 May-Jun;44(3):226-9 <81> UI - 77171941 AU - Roberts DW AU - Woolridge ED TI - A case of dentinogenesis imperfecta. A six month evaluation. SO - New York State Dental Journal 1977 May;43(5):286-9 <82> UI - 77147793 AU - Finne K AU - Nord PG AU - Persson G AU - Lennartsson B TI - Retrograde root filling with amalgam and Cavit. SO - Oral Surgery, Oral Medicine, Oral Pathology 1977 Apr;43(4):621-6 AB - In a 3-year review of 218 teeth with retrograde root filling with amalgam orCavit, the results obtained with the former proved significantly better than those obtained with the latter. The difference seemed to be due to a better obliteration of the canal by amalgam. The obliterating effect of amalgam probably eliminates the need for revision of incomplete othograde root filling, for example, in cases with a post in the root canal. Irrespective of type of filling materials, the results were less good in cases with marginal bone loss. <83> UI - 77094402 AU - Mink JR AU - McEvoy SA TI - Acid etch and enamel bond composite restoration of permanent anterior teeth affected by enamel hypoplasia. SO - Journal of the American Dental Association 1977 Feb;94(2):305-7 AB - We have found that this procedure, using acid etching, can be very successful for providing an intermediate restoration of teeth disfigured by enamel hypoplasia. The technique is easy, relatively inexpensive for the patient, and quite effective for improving the appearance of the tooth. <84> UI - 77072083 AU - Flynn M TI - Clinical evaluation of two pinless incisal edge repairs: a 24-month study. SO - Journal of the American Dental Association 1977 Jan;94(1):97-9 AB - Adhesive resin and composite resin were used to restore the central incisors in a 21-year-old woman at an emergency treatment. Two maxillary fractured incisors were restored (one after endodontic treatment) and reexamined over a period of 24 months (Fig 5). Some slight yellowing has been noted in the endodontically treated tooth, but it has not appreciably affected appearance. The patient did not object to the discoloration and no replacements or additions were done. The restorations showed no indications of excessive wear or physical damage during the examination period. <85> UI - 77051774 AU - Elderton RJ TI - The causes of failure of restorations: a literature review. SO - Journal of Dentistry 1976 Nov;4(6):257-62 <86> UI - 77006633 AU - Elderton RJ TI - The prevalence of failure of restorations: a literature review. [Review] [13 refs] SO - Journal of Dentistry 1976 Sep;4(5):207-10 <87> UI - 76190622 AU - Lavelle CL TI - A cross-sectional longitudinal survey into the durability of amalgam restorations. SO - Journal of Dentistry 1976 May;4(3):139-43 <88> UI - 76140464 AU - Shillingburg HT Jr TI - Conservative preparations for cast restorations. SO - Dental Clinics of North America 1976 Apr;20(2):259-71 AB - Partial veneer crowns still play a role in modern restorative dentistry. They must be used in the right situation with thoughtful treatment planning, and they must be done well in accordance with certain principles. Three-quarter crowns are less retentive than full crowns, but they can be used successfully as single unit restorations and retainers for short span bridges. Retention can be enhanced by the use of proximal boxes. The M.O.D. onlay, a modified inlay with occlusal coverage, minimizes the damaging effects of stress generated by occlusal forces. There is little indication for the use of M.O.D. inlays or large two surface inlays. <89> UI - 76118433 AU - Yuodelis RA AU - Smith DH TI - Correction of periodontal abnormalities as a preliminary phase of oral rehabilitation. SO - Dental Clinics of North America 1976 Jan;20(1):181-97 AB - The elimination of etiological factors and the correction of periodontal abnormalities are often a necessary preliminary phase of oral reconstruction. The development of optimal gingival and bony qualities using the surgical procedures outlined when indicated improves the prognosis of prospective abutment teeth and additionally may improve esthetics, retention, and maintenance of a fixed restoration. <90> UI - 76088732 AU - Scheer B TI - The restoration of injured anterior teeth in children by etch-retained resin. A longitudinal study. SO - British Dental Journal 1975 Dec 16;139(12):465-8 <91> UI - 76095615 AU - Braff MH TI - A comparison between stainless steel crowns and multisurface amalgams in primary molars. SO - ASDC Journal of Dentistry for Children 1975 Nov-Dec;42(6):474-8 AB - From the findings in this study, it appears that steel crowns for primary teeth are significantly superior to multisurface amalgam fillings, in terms of the percentage of teeth requiring subsequent care: 88.7 percent of the teeth initially restored with amalgam required follow-up treatment, and only 30.3 percent of the crowned teeth required such treatment. Because both types of restorations were studied for approximately the same length of time, one could not justly conclude that the crowns were superior in terms of longevity. Steel crowns may prove to be more economical for the patient than amalgam fillings, if follow-up visits are considered. The author plans to conduct a second study on the cost factor. <92> UI - 76044185 AU - Brill WA TI - Composite technic for fracture related to dentinogenesis imperfecta. SO - Dental Survey 1975 May;51(5):34-5 <93> UI - 76018709 AU - Rule DC AU - Elliott B TI - Semi-permanent restoration of fractured incisors in young patients. A clinical evaluation of one "acid-etch" technique. SO - British Dental Journal 1975 Oct 7;139(7):272-5 <94> UI - 76039181 AU - Smales RJ TI - Composite resin restorations. A three-year clinical assessment of four materials. SO - Australian Dental Journal 1975 Aug;20(4):228-34 AB - The clinical characteristics of four composite resins were assessed over a period or up to three years. Two hundred and sixty nine restorations of composite resins placed in anterior teeth were subjected to 380 examinations during a three year study. The restorations had been placed in the mouth of patients aged 11 to more than 51 years by a variety of operators and the clinical characteristics observed. An increase in defects and deficiencies occurred at the progressive examinations. <95> UI - 75138502 AU - Bellizzi R TI - Obturation of two root canals with paper points. 19 year follow-up. Report of a case. SO - New York State Dental Journal 1975 Apr;41(4):218-22