Marginal and internal adaptation of Class II ormocer and hybrid resin composite restorations before and after load cycling

Clinical Oral Investigations
N KournetasJ Geis-Gerstorfer

Abstract

To overcome the shortcomings of the conventional composite restorative materials, ormocer materials have been introduced over the past few years. The purpose of this study was to evaluate the marginal and internal adaptation of two ormocer restorative systems (Admira, Voco and Definite, Degussa) compared to a hybrid composite one (TPH Spectrum, Dentsply/ DeTrey), before and after load cycling in Class II restorations. Standardized Class II restorations with cervical margins on enamel were divided into three groups ( n=16). Teeth of each group were filled with one of the restoratives tested and its respective bonding agent. Each group was divided into two equal subgroups. The marginal and internal adaptation of the first subgroup was evaluated after 7-day water storage at room temperature and of the second after cyclic loading in a mastication simulator (1.2x10(6) cycles, 49 N, 1.6 Hz). The occlusal and cervical marginal evaluation was conducted by videomicroscope and ranked as "excellent" and "not excellent". One thin section (150 microm), in mesial-distal direction, of each restoration, was examined under metallographic microscope to determine the quality of internal adaptation. The occlusal and cervical adaptation of both orm...Continue Reading

Citations

Jul 11, 2006·Clinical Oral Investigations·T C FagundesM F L Navarro
Apr 9, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·Christian F J StappertJoerg R Strub
Mar 30, 2013·Dental Materials Journal·Abdul Aziz Abdullah Al Kheraif Ihtesham ur Rehman

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