Laboratory Study of Micro-shear Bond Strength of Two Resin Cements to Leucite Ceramics using Different Ceramic Primers.

摘要: AIM To evaluate the effect of Monobond Etch & Prime on micro-shear bond strength (MSBS) resin cements to leucite surface and compare MSBS two different conditioned surfaces with primer systems. MATERIALS AND METHODS Twenty-one ceramic disks (10 mm diameter, 2 thickness) were divided into three groups (n = 7). Group I: 9.6% hydrofluoric (HF) acid S (Ivoclar Vivadent, Liechtenstein), then conventional cement was applied. II: III: HF N adhesive The assigned applied in each disk through five plastic tubes an inner diameter 1.6 1.9 height, light cured. Micro-shear determined by pulling out using universal testing machine (Instron®, USA). RESULTS One-way analysis variance (ANOVA) Student's t-test used determine statistical difference (a 0.05) between groups. results showed that group III had highest values (7.32 ± 2.47) followed II (6.24 2.16), whereas I lowest (5.7 2.7). Nevertheless, there no statistically significant all CONCLUSION has shown comparable most popular combination silane. self-adhesive best results, though not significant. CLINICAL SIGNIFICANCE clinicians can use simplified technique (Monobond Prime) which