Effect of Sandblasting on Shear Bond Strength Composite Resin Veneer

Abstract

Attachment between restoration and enamel surface in indirect resin composite veneer restoration (IRCV) is obtained using multi-step (MS) resin cement. Recently, a one step self-adhesive dual-cured resin cement (SADRC) was introduced. Objective: To determine the effect of sandblasting on shear bond strength (SBS) of IRCV to enamel using MS resin cement and SADRC. Methods: Forty specimens of buccal surface of enamel human were light-cured in Solidilite chamber and were divided into two groups: IRCV without sandblasting (n=20) and with sandblasting for 10 seconds (n=20) and then bonded to enamel using MS (n=10) and SADRC (n=10), respectively. After 24h SBS of specimens were tested using a Universal Testing Machine. Data were analyzed statistically by one-way ANOVA. Results: The average SBS value of IRCV without SB and bonded with MS was 18.95+7.80MPa and MS with SB was 19.30+ SB (4.85+2.12MPa) and SADRC with SB (9.57+3.45MPa)(p<0.05). Conclusion: increased SBS VIRK to enamel using MS resin cement than SADRC.

Keywords

• indirect composite resin veneer
• resin cement multi-­step
• SADRC
• sandblasting