The wear behavior of a composite restorative in sliding contact with a stylus fashioned from human enamel has been investigated as a function of the effective stiffness of the stylus-restorative contact. The results demonstrate that: (1) the stiffness parameter affects wear surface morphology of both the composite and the enamel; and (2) a decrease in stiffness produces a larger variance in the rate of wear of a composite, but this factor has no significant effect on the average wear-rate for the material and test conditions explored.
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References
1.
Dickson, G. : Physical and Chemical Properties of Wear, JDent Res58:1535-1543, 1979.
2.
Craig, R.G. and Powers, J.M.: Wear of Dental Tissues and Materials, Int Dent J26:123-133, 1976.
3.
Lee, H.L. ; Orlowski, J.A.; Kidd , P.D.; Glace, R.W.; and Enable, E.: Evaluation of Wear Resistance of Dental Restorative Materials, Am Chem Soc Int Sym on Advances in Polymer, Friction and Wear, Lee, L.-H. , Ed., Los Angeles, CA , 1974.
Bailey, W.F. ; Johnson, J.F.; McSparran , M.F.; Rice, S.L.; and Sheth, P.J.: Design and Statistical Evaluation of a Sliding Wear Test Apparatus for in vitro Evaluation of Dental Restoratives , Mater Sci Eng41 :31-35, 1979.
6.
Bailey, W.F. and Rice, S.L.: Comparative Sliding Wear Behavior of a Dental Amalgam and a Composite Restorative as a Function of Contact Stress , J Dent Res60:731-732, 1981.
7.
Rice, S.L.; Wayne, S.F.; Bailey, W.F.; and Roto, M.: Influence of Variation in Contact Stress on the Sliding Wear Behavior of a Dental Amalgam, Biomaterials2:46-48. 1981.
8.
Bailey, W.F. ; Rice, S.L.; Albert , R.J.; and Temin, S.C.: Influence of Contact Stress, Sliding Velocity and Surface Finish on the Sliding Wear of a Composite Restorative, J Dent Res60:914-918, 1981.
9.
Rice, S.L.; Nowotny, H.; and Wayne, S.F.: The Role of Specimen Stiffness in Sliding and Impact Wear, Wear, In press.
10.
Margenau, H. and Murphy, G.M.: The Mathematics of Physics and Chemistry, 2nd ed., Princeton, NJ: D. Van Nostrand Co. , 1956, pp. 504-519.
