The unreacted methacrylate groups on the surface of conventional composites and microfilled composites were studied by means of multiple internal reflection infrared spectroscopy. The influences of polymerization time, temperature, and the effect of polishing were studied. We also attempted to relate the results of some mechanical tests to the degree of chemical unsaturation measured in the different resins. All surface treatments and manipulative variables caused a decrease in double bond content and interfacial bond strength.
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References
1.
Boyer, D.B.; Chan, K.C.; and Torney, D.L.: The Strength of Multilayer and Repaired Composite Resin, J Prosthet Dent39:63-67, 1978.
2.
Causton, B.E. : Repair of Abraded Composite Fillings. An in vitro Study, Br Dent J139:286-288, 1975.
3.
Forsten, L. and Väliäho, M.-L.: Transverse and Bond Strength of Restorative Resins, Acta Odontol Scand29 :527-537,1971.
4.
Hotz, P.: Die Anpolymerisation von Kompositmaterial, SSO85:608-614, 1975.
5.
Lloyd, C.H.; Baigrie, D.A.; and Jeffrey, I.W.: The Tensile Strength of Composite Repairs, J Dent8:171-177, 1980.
6.
Reinhardt, K.-J. and Vahl, J.: Untersuchungen physikalischer Eigenschaften hochglanzpolierbarer Füllungsmaterialien im Vergleich zu Compositen , Dtsch Zahnaerztl Z33 :547-553, 1978.
7.
Reisbick, M.H. and Brodsky, J.F.: Strength Parameters of Composite Resins , Prosthet Dent26:178-185, 1971.
8.
Medeck, E.: Some Qualitative and Quantitative Applications of Multiple Internal Reflection Spectroscopy, Can Spectroscopy13:76-80, 1969.
9.
Wilks, P.A.: Internal Reflection Spectroscopy, Int Lab (July-August) :47-55, 1980.
Ruyter, I.E. and Györösi, P.P.: An Infrared Spectroscopic Study of Sealants , Scand J Dent Res84:396-400, 1976.
12.
Vankerckhoven, H.; Lambrechts, P.; Van Beylen, M.; and Vanherle, G.: Characterization of Composite Resins by NMR and TEM, J Dent Res60:1957-1965, 1981 .
13.
Ruyter, I.E. and Svendsen, S.A.: Remaining Methacrylate Groups in Composite Restorative Materials, Acta Odontol Scand36:75-82, 1978.
14.
Bausch, J.R. ; DE Lange, C.; and Davidson, C.L.: The Influence of Temperature on Some Physical Properties of Dental Composites. J Oral Rehab8:309-317, 1981.
15.
Davidson, C.L. ; Duysters, P.P.E.; DE Lange, C.; and Bausch, J.R.: Structural Changes in Composite Surface Material After Dry Polishing, J Oral Rehab8:431-439, 1981.
