Journal of the American Dental Association, Vol 113, Issue 6, 905-909
Copyright © 1986 by American Dental Association
Effects of polymerization techniques on uniformity of cure of large-diameter, photo-initiated composite resin restorations
JC Neo,
GE Denehy,
and
DB Boyer
The polymerization effectiveness of various methods of exposing large-diameter, light-activated composite resin samples is reported. Results of Knoop hardness testing showed that highest mean hardness was achieved by using a wide tip (13 mm) with either the spot cure or overlap method for 60 seconds. More uniform hardness resulted from the wide-tip with scanning methods and 60-second cure than resulted from the narrow-tip (8 mm) with the spot or overlap method and 20-second cure.