Linn Brandon James, Berzins David W, Dhuru Virendra B, Bradley Thomas Gerard
Castle Rock, Colo, USA.
Angle Orthod. 2006 Mar;76(2):289-94. doi: 10.1043/0003-3219(2006)076[0289:ACOBSB]2.0.CO;2.
The purpose of this study was to evaluate and compare the shear bond strength and the sites of bond failure for brackets bonded to teeth, using two indirect-bonding material protocols and a direct-bonding technique. Sixty extracted human premolars were collected and randomly divided into three groups. The direct-bonded group (group 1) used a light-cured adhesive and primer (Transbond XT). One indirect-bonded group (group 2) consisted of a chemical-cured primer (Sondhi Rapid Set) and light-cured adhesive (Transbond XT), whereas the other group (group 3) used a light-cured primer (Orthosolo) and adhesive (Enlight LV). Forty hours after bonding, the samples were debonded. Mean shear bond strengths were 16.27, 13.83, and 14.76 MPa for groups 1, 2, and 3, respectively. A one-way analysis of variance showed no significant difference in mean bond strength between groups (P = .21). Furthermore, a Weibull analysis showed all three groups tested provided over a 90% survival rate at normal masticatory and orthodontic force levels. For each tooth, an Adhesive Remnant Index (ARI) score was determined. Group 2 was found to have a significantly lower ARI score (P < .05) compared with groups 1 and 3. In addition, Pearson correlation coefficients indicated no strong correlation between bond strength and ARI score within or across all groups.
本研究的目的是使用两种间接粘结材料方案和一种直接粘结技术，评估并比较粘结在牙齿上的托槽的剪切粘结强度和粘结失败部位。收集了60颗拔除的人类前磨牙并随机分为三组。直接粘结组（第1组）使用光固化粘合剂和底漆（Transbond XT）。一个间接粘结组（第2组）由化学固化底漆（Sondhi Rapid Set）和光固化粘合剂（Transbond XT）组成，而另一组（第3组）使用光固化底漆（Orthosolo）和粘合剂（Enlight LV）。粘结40小时后，将样本脱粘。第1、2和3组的平均剪切粘结强度分别为16.27、13.83和14.76 MPa。单向方差分析显示各组之间的平均粘结强度无显著差异（P = 0.21）。此外，威布尔分析表明，在正常咀嚼和正畸力水平下，所有测试的三组的存活率均超过90%。对于每颗牙齿，确定粘结剂残留指数（ARI）评分。发现第2组的ARI评分与第1组和第3组相比显著更低（P < 0.05）。此外，皮尔逊相关系数表明，在所有组内或组间，粘结强度与ARI评分之间没有强相关性。
