Effects of air abrasion with alumina or glass beads on surface characteristics of CAD/CAM composite materials and the bond strength of resin cements.
Effects of air abrasion with alumina or glass beads on surface characteristics of CAD/CAM composite materials and the bond strength of resin cements.
复制标题
DOI：
10.1590/1678-775720150261
复制
发表时间：
2015-11
期刊：
影响因子：
--
通讯作者：
Takashi S
中科院分区：
文献类型：
--
作者：
Nobuaki A;Keiichi Y;Takashi S
本研究旨在评估氧化铝或玻璃珠的空气研磨对树脂水门汀与CAD/CAM复合材料的粘结强度的影响。 CAD/CAM复合块材料[CerasmartCS和Block HC（BHC）]按如下进行预处理：（a）不处理（无），（B）施加陶瓷底漆（CP），（c）在0.2 MPa下氧化铝喷砂（AB），（d）AB接着CP（AB+CP），和（e）在0.4 MPa下玻璃珠喷砂（GBB）接着CP（GBB+CP）。使用树脂粘固剂[G-CEM Cerasmart（GCCS）和ResiCem（RC）]将复合材料样本粘合到树脂复合材料圆盘上。通过剪切试验测量24小时后（TC 0）和热循环后（TC 10，000，4-60°C）的粘结强度。使用三因素ANOVA和Tukey折衷事后检验分析组间的统计学显著性差异（α=0.05）。 对于两种CAD/CAM复合材料，无组在TC 10，000后表现出粘合强度显著降低（p<0.05）。TC 10，000后，AB组的粘结强度显著高于无组，而CP组则无显著差异（p<0.05）。GBB的表面缺陷比AB小，但其表面粗糙度无显著差异（p>0.05）。TC 10，000后，AB+CP组RC的粘结强度显著高于AB组（p<0.05），但GCCS的粘结强度则无显著差异。GBB+CP组在两次热循环中显示出最高的粘结强度（p<0.05）。 与使用氧化铝粉末和CP相比，使用玻璃珠的空气研磨在增加树脂粘固剂和CAD/CAM复合材料之间的粘结耐久性方面更有效。
The study aimed to evaluate effects of air abrasion with alumina or glass beads on bond strengths of resin cements to CAD/CAM composite materials. CAD/CAM composite block materials [Cerasmart (CS) and Block HC (BHC)] were pretreated as follows: (a) no treatment (None), (b) application of a ceramic primer (CP), (c) alumina-blasting at 0.2 MPa (AB), (d) AB followed by CP (AB+CP), and (e) glass-beads blasting at 0.4 MPa (GBB) followed by CP (GBB+CP). The composite specimens were bonded to resin composite disks using resin cements [G-CEM Cerasmart (GCCS) and ResiCem (RC)]. The bond strengths after 24 h (TC 0) and after thermal cycling (TC 10,000 at 4–60°C) were measured by shear tests. Three-way ANOVA and the Tukey compromise post hoc tests were used to analyze statistically significant differences between groups (α=0.05). For both CAD/CAM composite materials, the None group exhibited a significant decrease in bond strength after TC 10,000 (p<0.05). AB showed significantly higher bond strength after TC 10,000 than the None group, while CP did not (p<0.05). GBB exhibited smaller surface defects than did AB; however, their surface roughnesses were not significantly different (p>0.05). The AB+CP group showed a significantly higher bond strength after TC 10,000 than did the AB group for RC (p<0.05), but not for GCCS. The GBB+CP group showed the highest bond strength for both thermal cyclings (p<0.05). Air abrasion with glass beads was more effective in increasing bond durability between the resin cements and CAD/CAM composite materials than was using an alumina powder and a CP.