Comparative evaluation of microleakage in class II cavities restored with Ceram X and Filtek P-90: An in vitro study.

Contemporary Clinical Dentistry
Poonam BograSaru Kumar

Abstract

Polymerization shrinkage in composite resins is responsible for microleakage. Methacrylate-based composite resins have linear reactive groups resulting in high polymerization shrinkage. A recently introduced composite resin Filtek P90 is based on siloxanes and oxiranes which polymerize by cationic "ring opening" polymerization resulting in reduced polymerization shrinkage. Aim of this study was to compare microleakage in class II cavities restored with a nanoceramic restorative (Ceram X) and a silorane composite (Filtek P90). Standardized class II box type cavities were prepared on mesial (Groups Ia and IIa) and distal (Groups Ib and IIb) surfaces of twenty extracted permanent molar teeth with gingival floor ending 1 mm coronal and apical to the cementoenamel junction, respectively. The teeth in Group Ia and Ib were restored with Ceram X and Group IIa and IIb with Filtek P90. The specimens were thermocycled and microleakage evaluated. The data were statistically analyzed using Wilcoxon Signed-Rank test at the 0.05 level of significance. Mean microleakage score of group la and lb was 1 ± 2.260 and 2.8 ± 1.229, respectively. And that of group Ila and llb was 0.2 ± .869 and 0.3 ± .588, respectively. When groups I and II were compa...Continue Reading

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Citations

Dec 19, 2013·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Ricardo WalterEdward J Swift
Dec 22, 2016·Operative Dentistry·G A MaghairehH Alzraikat
Nov 12, 2013·Journal of Applied Oral Science : Revista FOB·Stephano Zerlottini IsaacFabiana Mantovani Gomes França
Jul 22, 2016·Stomatologii︠a︡·M M Uhanov, A N Ryahovsky
May 22, 2016·The Journal of Contemporary Dental Practice·Fatemeh KoohpeimaBabak Azarian
Oct 27, 2018·Interventional Medicine & Applied Science·Eman I AlSagobPaul C Stark

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