Microtensile bond strength between a quartz fiber post and a resin cement: effect of post surface conditioning.
Microtensile bond strength between a quartz fiber post and a resin cement: effect of post surface conditioning.
复制标题
石英纤维桩和树脂水泥之间的微拉伸粘合强度：后表面处理的效果。
DOI：
10.3290/j.jad.a11072
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Bottino
中科院分区：
文献类型：
--
作者：
L. Valandro;S. Yoshiga;R. D. de Melo;G. Galhano;André Mallmann;Cleverson Porto Marinho;M. Bottino
目的
测试石英纤维增强复合材料桩（FRC）与树脂粘固剂之间的粘结强度。零假设是，可以通过使用椅旁摩擦化学二氧化硅涂层系统来增加粘结强度。
材料和方法
三十个石英玻璃纤维（Light-Post）根据后表面处理分为3组：G1）用32%磷酸调节（1分钟），施加硅烷偶联剂; G2）用10%氢氟酸蚀刻（1分钟），施加硅烷; G3）椅旁摩擦化学二氧化硅涂覆方法（CoJet系统）：使用30微米SiOx改性的Al 2 O3颗粒进行空气研磨，使用硅烷。此后，用树脂粘固剂（Duo-Link）将桩粘固成圆柱体（直径5 mm，高15 mm）。胶结后，将试样储存在蒸馏水中（37 ℃/24 h），并在冷却下用金刚石砂轮（Lab-cut 1010）沿x和y轴沿着切片，以产生未修剪的棒试样。用氰基丙烯酸酯将每个样本连接到适于微拉伸试验的装置上。微拉伸试验在通用试验机上进行（1 mm/min）。将获得的数据提交至单因素ANOVA和Tukey检验（α = 0.05）。
结果
观察到调节方法的显著影响（p < 0.0001）。G3的粘结强度（15.14 +/- 3.3）显著高于G1（6.9 +/- 2.3）和G2（12.60 +/- 2.8）的粘结强度（分别为p = 0.000106和p = 0.002631）。尽管分组不同，但所有受试样本均显示树脂骨水泥和FRC之间的粘合失效。
结论
椅旁摩擦化学系统产生的树脂水泥和石英纤维桩之间的粘结强度最高。零假设可接受（p < 0.0001）。
PURPOSE
To test the bond strength between a quartz-fiber-reinforced composite post (FRC) and a resin cement. The null hypothesis was that the bond strength can be increased by using a chairside tribochemical silica-coating system.
MATERIALS AND METHODS
Thirty quartz-FRCs (Light-Post) were divided into 3 groups according to the post surface treatment: G1) Conditioning with 32% phosphoric acid (1 min), applying a silane coupling agent; G2) etching with 10% hydrofluoric acid (1 min), silane application; G3) chairside tribochemical silica coating method (CoJet System): air abrasion with 30-microm SiOx-modified Al2O3 particles, silane application. Thereafter, the posts were cemented into a cylinder (5 mm diameter, 15 mm height) with a resin cement (Duo-Link). After cementation, the specimens were stored in distilled water (37 degrees C/24 h) and sectioned along the x and y axes with a diamond wheel under cooling (Lab-cut 1010) to create nontrimmed bar specimens. Each specimen was attached with cyanoacrylate to an apparatus adapted for the microtensile test. Microtensile testing was conducted on a universal testing machine (1 mm/min). The data obtained were submitted to the one-way ANOVA and Tukey test (alpha = 0.05).
RESULTS
A significant influence of the conditioning methods was observed (p < 0.0001). The bond strength of G3 (15.14 +/- 3.3) was significantly higher than the bond strengths of G1 (6.9 +/- 2.3) and G2 (12.60 +/- 2.8) (p = 0.000106 and p = 0.002631, respectively). Notwithstanding the groups, all the tested specimens showed adhesive failure between the resin cement and FRC.
CONCLUSION
The chairside tribochemical system yielded the highest bond strength between resin cement and quartz-fiber post. The null hypothesis was accepted (p < 0.0001).