Effects of grit blasting and silanization on bond strengths of a resin luting cement to Belleglass HP indirect composite

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Colleges, School and Institutes

Abstract

Purpose To investigate the extent of bonding possible of a resin luting cement with three opacities of Belleglass HP, representing different filler type and loading levels in a highly cross-linked resin matrix. Materials and Methods: Belleglass HP (3 opacities: opaque dentin, translucent dentin, cuspal enamel) was prepared as solid notched discs (Group A) or luted halves to create notched discs (Groups B-F). Luted samples were split through the notch on the Instron for conditions: as-is after molding (B), grit blasted with 50 mum Al2O3 (C), grit blasted and silanated (D) grit blasted, silanated, and stored 1 week (E), and grit blasted and treated with Artglass liquid (F). All the samples were stored in distilled water at 37degreesC for 24 hours before testing. The fractured surfaces were examined by light and scanning electron microscopy (SEM) to assess the effect of the surface treatments. Results: The mean fracture resistance (+/-S.D) of the tested groups ranged from 7.6 (+/-1.9 Nmm(-1)) for Group A to 13.9 (+/-5.4 Nmm(-1)) for Group D. Two-way analysis of variance showed no significant interaction (P> 0.05) between product opacities & surface treatments. The bonded inlay test halves in Groups B and C failed adhesively between the inlay test halves and the luting cement whereas the other three test groups (D,E,F) failed cohesively in the luting cement. One-way analysis of variance with post-hoc paired group Tukey testing revealed that Group D (13.9 +/- 5.4 Nmm(-1)) performed significantly better (P<0.05) than Groups A (7.6 +/- 1.9 Nmm(-1)), B (9.2 +/- 3.7 Nmm(-1)) or C (7.8 +/- 1.6 Nmm(-1)). No statistical difference was found between Groups D to F (P> 0.05). (Am J Dent 2003;16:53-57).

Details

Original languageEnglish
Pages (from-to)53-57
Number of pages5
JournalAmerican Journal of Dentistry
Volume16
Publication statusPublished - 1 Jan 2003