Michida Silvia Masae de Araujo, Valandro Luiz Felipe, Yoshiga Silvia, Andreatta Filho Osvaldo Daniel, Balducci Ivan, Bottino Marco Antonio
Universidade Estadual Paulista, São José dos Campos, SP.
J Appl Oral Sci. 2003 Dec;11(4):361-6. doi: 10.1590/s1678-77572003000400016.
This study evaluated the microtensile bond strength of a resin composite to a ceramic submitted to three surface treatments. Twelve glass-infiltrated alumina ceramic blocks (In-Ceram Alumina, VITA) and twelve resin composite blocks (Clearfil APX, Kuraray) with dimensions of 6mm x 6mm x 5mm were made. The surface of the ceramic was wet-grounded with # 600, 800 and 1200-grid sandpaper, and the blocks were divided in three groups: Group 1 - sandblasting with aluminum oxide - particles 110mm (Micro-Etcher, Danville); Group 2 - Rocatec System (ESPE): Tribochemical silica coating (Rocatec pre-powder + Rocatec-Plus powder + Rocatec-Sil); Group 3 - CoJet System (3M/ESPE): silica coating (silica oxide + ESPE-Sil). The ceramic blocks were cemented to the resin composite blocks with Panavia F (Kuraray Co), following the manufacturer's instructions, under load of 750g for 10min. The samples were stored (distilled water / 7 days / 37O C) and sectioned in two axis, x and y, with diamond disk under cooling in order to obtain samples (S) with 0.6 ± 0.1mm² of adhesive area (n=36). The S were attached in adapted device for the microtensile test that was performed at an universal testing machine (EMIC), at a speed of 1mm/min. The results (MPa) were submitted to ANOVA and Tukey's test (p<0.05): G1 - 15.36; G2 - 30.98; G3 - 31.25. Groups 2 (Rocatec) and 3 (CoJet) presented larger bond strength than group 1. There was no statistical difference between group 2 and group 3.
本研究评估了经过三种表面处理的树脂复合材料与陶瓷之间的微拉伸粘结强度。制作了十二个玻璃渗透氧化铝陶瓷块（In-Ceram Alumina，维他公司）和十二个尺寸为6mm×6mm×5mm的树脂复合材料块（Clearfil APX，可乐丽公司）。陶瓷表面用600号、800号和1200号砂纸湿磨，这些块体被分为三组：第1组 - 用110μm的氧化铝颗粒喷砂（Micro-Etcher，丹维尔公司）；第2组 - Rocatec系统（贺利氏公司）：摩擦化学二氧化硅涂层（Rocatec预粉 + Rocatec-Plus粉 + Rocatec-Sil）；第3组 - CoJet系统（3M/贺利氏公司）：二氧化硅涂层（氧化硅 + ESPE-Sil）。按照制造商的说明，使用Panavia F（可乐丽公司）在750g负载下将陶瓷块粘结到树脂复合材料块上10分钟。将样品储存（蒸馏水 / 7天 / 37℃），并用金刚石圆盘在冷却条件下沿x和y两个轴切割，以获得粘结面积为0.6±0.1mm²的样品（n = 36）。将样品附着在适用于微拉伸试验的装置上，该试验在万能试验机（EMIC）上以1mm/min的速度进行。结果（MPa）进行方差分析和Tukey检验（p < 0.05）：第1组 - 15.36；第2组 - 30.98；第3组 - 31.25。第2组（Rocatec）和第3组（CoJet）的粘结强度高于第1组。第2组和第3组之间没有统计学差异。
