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Flow

Flow is defined as the permanent strain of an elastic impression material when it is loaded in compression at a fixed stress (100 g on 12.7 x 19 mm cylinder) for 15 minutes at one hour after mixing. The method of testing is described in American National Standards Institute/American Dental Association Specification no. 19 (ref. 73).
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Material                  Product               Flow (%)     Ref.
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Bite registration 
  material                Correct-Bite          0.00          155
Impression materials
  Alginate
    normal consistency    Jeltrate              3.6*           27
    thin consistency      Jeltrate              6.3*           27
    thick consistency     Jeltrate              2.7*           27
  Polyether               Impregum F            0.02          156
                          Permadyne
                            light               0.03          156
                            heavy               0.02          156
                          Polyjel NF            0.02          156
  Polysulfide             Coeflex
                            light               0.45          156
                            medium              0.45          156
                            heavy               0.42          156
  Silicone, addition      Absolute
                            light               0.03          156
                            medium              0.02          156
                            heavy               0.02          156
                            putty               0.03          156
                          Baysilex              0.04          156
                          Exaflex Hydrophilic
                            light               0.05          156
                            medium              0.03          156
                          Examix Hydrophilic
                            light               0.03          156
                            medium              0.01          156
                            monophase           0.00          155
                          Express Hydrophilic
                            light               0.03          156
                            medium              0.02          156
                            putty               0.09          156
                          Hydrosil              0.02          156
                          Imprint               0.03          156
                          Mirror 3 Extrude
                            light               0.03          156
                            medium              0.02          156
                            putty               0.03          156
                          Omnisil
                            light               0.02          156
                            medium              0.02          156
                            putty               0.07          156
                          Permagum
                            light               0.00          155
                            medium              0.00          155
                            heavy               0.02          155
                          President
                            light               0.01          156
                            heavy               0.01          156
                            putty               0.01          156
                          Reprosil Hydrophilic
    .                       light               0.02          156
                            medium              0.02          156
                            heavy               0.02          156
                            putty               0.02          156
  Silicone, condensation  Coltex
                            light               0.11          156
                            medium              0.15          156
                          Coltoflax             0.08          156
                          Cuttersil
                            light               0.02          155
                            medium              0.04          155
                          Elasticon
                            light               0.03          155
                            heavy               0.00          155
                          Rapid
                            light               0.01          155
                            putty               0.01          155
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* Measured at 6 min.

Introduction to Biomaterials Properties | Biomaterials Properties Table Listing |
References (1-100) | References (101-200) | References (201-244) |

Revised April, 1996
Biomaterials Properties Database, University of Michigan
Contact: Dr William J. O'Brien, Director (FAX: 313-647-5293).
Copyright © Quintessence Publishing, 1996.

http://www.lib.umich.edu/dentlib/Dental_tables/Flow.html

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