Abstract

This study assessed the effect of surface conditioning methods and ceramic primers on the repair strength of resin-composite to zirconia-veneering ceramic with different defect sizes. Zirconia (IPS e.max ZirCAD) (n = 30) and veneering ceramic (Creation) (n = 30) alone acted as control groups. In the 1st part of the study, zirconia was silica-coated (SC) and treated with 3 different ceramic primers (Monobond Plus + Helibond (MBP), Clearfil Ceramic Primer Plus (CCP), Z-Prime Plus (ZPP)). Feldspathic ceramic was etched with 9.6% hydrofluoric acid (HF) and primed. After repairing with resin-composite (Empress Esthetic) and testing for shear bond strength (SBS), the best performing adhesive system (MBP) for both substrates (N = 60, n = 10 per group) was tested for defect sizes of (a) 3.2, (b) 4, (c) 5 mm with zirconia (diameter: 1.7 mm) being in the center (N = 60, n = 10 per group). Half of the specimens were repaired employing HFSC and the other half with SCHF. The specimens were stored in distilled water (37 °C, 24 h) and thermocycled (5–55 °C, 5000 cycles). The resin-substrate interface was loaded under shear force (1 mm/min). Data (MPa) were analyzed using two-way ANOVA and Tukey’s tests (α = 0.05). In the 1st study, MBP resulted in significantly higher SBS (MPa) for both zirconia and veneering ceramic (Zirconia: 14.2 ± 3.6; Veneer: 11.0 ± 3.7), compared to those of CCP (Zirconia: 9.4 ± 2.2; Veneer: 7.5 ± 3.4) and ZPP (Zirconia: 5.0 ± 0.9; Veneer: 5.9 ± 2.1) (p < 0.01). Neither the size of the defect (p > 0.05) nor repair sequence showed a significant effect (p > 0.05) on the repair bond strength with mainly mixed type with cohesive fracture in the veneering ceramic.

摘要

本研究评估了表面处理方法和陶瓷底漆对不同缺陷尺寸的树脂复合材料对氧化锆饰面陶瓷的修复强度的影响。氧化锆 (IPS e.max ZirCAD) ( n  = 30) 和饰面陶瓷 (Creation) ( n  = 30) 单独作为对照组。在研究的第一部分，氧化锆经过二氧化硅涂层 (SC) 并用 3 种不同的陶瓷底漆处理（Monobond Plus + Helibond (MBP)、Clearfil Ceramic Primer Plus (CCP)、Z-Prime Plus (ZPP)）。长石陶瓷用 9.6% 的氢氟酸 (HF) 蚀刻并涂底漆。使用树脂复合材料 (Empress Esthetic) 进行修复并测试剪切粘合强度 (SBS) 后，两种基材的最佳粘合剂系统 (MBP) ( N  = 60, n = 每组 10 个）的缺陷尺寸为 (a) 3.2、(b) 4、(c) 5 毫米，氧化锆（直径：1.7 毫米）位于中心（N  = 60， 每组n = 10 个）。一半的样本使用 HFSC 进行修复，另一半使用 SCHF 进行修复。将样品储存在蒸馏水中（37°C，24 小时）并进行热循环（5-55°C，5000 次循环）。树脂-基材界面在剪切力 (1 mm/min) 下加载。数据 (MPa) 使用双向方差分析和 Tukey 检验 ( α  = 0.05) 进行分析。在第一项研究中，与 CCP（氧化锆：9.4 ± 2.2；饰面：7.5 ± 3.4) 和 ZPP（氧化锆：5.0 ± 0.9；贴面：5.9 ± 2.1）（p < 0.01)。缺陷的大小（p  > 0.05）和修复顺序均未对 贴面陶瓷中以混合型为主的内聚断裂修复粘结强度产生显着影响（p > 0.05）。