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Post-irradiation Polymerization of Visible Light-activated Composite Resin

Department of Restorative Dentistry, School of Dentistry, University of Southern California, Los Angeles, California 90089-0641

P.L. Fan

Council on Dental Materials, Instruments and Equipment, American Dental Association, Chicago, Illinois 60611

W.M. Johnston

Department of Dental Materials, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109

The rate of post-exposure polymerization and the effects of initial polymerization on the final polymerization of visible light-activated composite resin were studied. The extent of polymerization, as indicated by hardness values, was influenced by the exposure time to the photo-activating radiation and by the post-exposure time. The timing of testing is critical when studying the properties of visible light-activated composite resins.

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Journal of Dental Research, Vol. 62, No. 3, 363-365 (1983)
DOI: 10.1177/00220345830620031201


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