[The polymerization shrinkage of light cure composite resin].
The polymerization shrinkage of a number of commercially available composite resin (Starfiil, Durafill, VLC-1 and GD) and an experimental composite #1 which contains 16% DMSOC (a new monomer which expands on polymerization) has been determined using a water-filled dialometer. The results indicated that GD displayed the largest shrinkage value at 2.62 +/- 0.20%, while VLC-1, Durafill and Staifill had smaller values at 2.10 +/- 0.10%, 1.84 +/- 0.20% and 1.42 +/- 0.16%, respectively. The experimental composite. #1 underwent least contraction during setting (0.14 +/- 0.13%). The polymerization shrinkage was influenced by the filler loading and the duration of the exposure to the activating light source. There was little influence of shade of materials on the polymerization shrinkage for VLC-1.
Zhao
X Y
XY
College of Stomatology, fourth Military Medicine University, Xian.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003116:Color; D003188:Composite Resins; D003764:Dental Materials; D008027:Light; D008422:Materials Testing; D013997:Time Factors
D003188:Composite Resins; D003764:Dental Materials