The short-term clinical performance of a silorane-based resin composite in the proximal contacts of class II restorations.
OBJECTIVE
The aim of this randomized clinical trial was to compare the proximal contact of a silorane-based resin composite with a conventional methacrylate-based resin composite in class II restorations after a 6 months follow-up period.


METHODS
After obtaining informed consent, 33 patients were randomly allocated into a test group (Filtek P90/Adhesive System-3M ESPE) or control group (Filtek P60/ Adper SE Plus-3M ESPE), and 100 direct resin composite restorations (n = 50) were placed. A single operator performed the cavities and restorations. After rubber dam placement, a metal matrix and wooden wedge were placed. The restorative systems were applied according to the manufacturer's instructions. After 1 week, the restorations were finished and polished. The proximal contacts were assessed blindly and independently by two calibrated examiners (kW = 0.8) at the baseline and after 6 months according to a three-step grading criteria. Data were analyzed with the Mann-Whitney U-test and Wilcoxon signed Rank tests (a = 0.05).


RESULTS
After 6 months, 96% of the restoration contacts were present for evaluation. The frequencies of restorations classified as Bravo in control and test groups were 6 and 8% at the baseline, and 6.25 and 12.75% after 6 months. No significant difference was found between the restorative materials (p > 0.05; Mann-Whitney U-test) neither between baseline and 6 months period (p > 0.05; Wilcoxon signed Rank tests).


CONCLUSIONS
Both materials performed satisfactorily over 6 months follow-up period.


CONCLUSIONS
The short-term clinical performance of a silorane-based resin composite in the proximal contacts of class II restorations was similar to the well-known methacrylate-based resin composite.
Doctoral Student, Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte MG, Brazil.
Fabiana Santos
FS
Goncalves
Carolina Dolabela Leal
CD
Castro
Audrey Cristina
AC
Bueno
Amanda Beatriz Dadah Aniceto de
AB
Freitas
Alysson Nogueira
AN
Moreira
Claudia Silami
CS
Magalhaes
D000328:Adult; D001641:Bicuspid; D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar; D062047:Silorane Resins; D018709:Statistics, Nonparametric; D055815:Young Adult
D003188:Composite Resins; D062047:Silorane Resins; C544925:filtek P90; C555513:silorane composite resin; D017438:Bisphenol A-Glycidyl Methacrylate