Influence of the amount of tooth surface preparation on the shear bond strength of zirconia cantilever single-retainer resin-bonded fixed partial denture

The Journal of Advanced Prosthodontics
Charles-Ellie SillamRamin Atash

Abstract

Conventional resin-bonded fixed partial dentures (RBFPDs) are usually made with a two-retainer design. Unlike conventional RBFPDs, cantilever resin-bonded fixed partial dentures (Cantilever RBFPDs) are, for their part, made with a single-retainer design. The aim of this study was to compare the effect of tooth surface preparation on the bond strength of zirconia cantilever single-retainer RBFPDs. The objective is to evaluate the shear bond strength of these single-retainer RBFPDs bonded on 3 different amount of tooth surface preparation. Thirty extracted bovine incisors were categorized to 3 groups (n=10), with different amounts of tooth surface preparations. Teeth were restored with single-retainer RBFPDs with different retainer surfaces: large retainer of 32 mm2; medium retainer of 22 mm2; no retainer and only a proximal connecting box of 12 mm2. All RBFPDs were made of zirconia and were bonded using an adhesive system without adhesive capacity. Shear forces were applied to these restorations until debonding. Mean shear bond strength values for the groups I, II, and II were 2.39±0.53 MPa, 3.13±0.69 MPa, and 5.40±0.96 MPa, respectively. Statistical analyses were performed using a one-way ANOVA test with Bonferroni post-hoc tes...Continue Reading

References

Aug 1, 1991·Journal of Dentistry·D L HusseyG J Linden
Jun 10, 2000·Australian Dental Journal·A W Chan, I E Barnes
Sep 22, 2009·Journal of Dental Research·M KernB Yang
Nov 26, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Jeffrey Y ThompsonRobert Smith
Aug 13, 2011·British Dental Journal·K A DureyM F W-Y Chan

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