Bishara Samir E, Otsby Adam W, Ajlouni Raed, Laffoon John, Warren John J
Department of Orthodontics, University of Iowa, Iowa City, IA 52242, USA.
Angle Orthod. 2008 Nov;78(6):1101-4. doi: 10.2319/122907-607.1.
To determine if a new premixed self-etch adhesive can be used to successfully bond orthodontic brackets to enamel.
Forty human molars were cleaned, mounted, and randomly divided into two groups. In group 1, 20 teeth were conditioned using the self-etching primer Transbond Plus (3M Unitek, Monrovia, Calif). In group 2, 20 teeth were conditioned using a new premixed self-etching adhesive, AdheSE One (Ivoclar Vivadent Inc, Amherst, NY). Both groups were bonded using brackets precoated with a composite adhesive. The teeth were debonded within half an hour following initial bonding using a universal testing machine. After debonding, the enamel surface was examined under 10x magnifications to determine the amount of residual adhesive remaining on the tooth. A Student's t-test was used to compare the shear bond strength (SBS) of the two groups, and the Chi-square test was used to compare the adhesive remnant index (ARI) scores for the two adhesive systems.
The mean SBS of the brackets bonded to the teeth using AdhesSE One was 3.6 +/- 1.3 MPa and was significantly lower (t = 2.80, P = .01) than the SBS of the brackets bonded using Transbond Plus (x = 5.9 +/- 3.2 MPa). The comparisons of the ARI scores between the two groups (chi2 = 19.26) indicated that bracket failure mode was also significantly different (P < .001), with more adhesive remaining on the teeth bonded using Transbond Plus.
The SBS of the new premixed self-etching adhesive needs to be increased for it to be successfully used for bonding orthodontic brackets.
确定一种新型预混自酸蚀黏结剂是否能成功地将正畸托槽黏结至牙釉质。
40颗人磨牙经清洁、安装后随机分为两组。第1组，20颗牙齿使用自酸蚀底漆Transbond Plus（3M Unitek公司，蒙罗维亚，加利福尼亚州）进行预处理。第2组，20颗牙齿使用一种新型预混自酸蚀黏结剂AdheSE One（义获嘉伟瓦登特公司，阿默斯特，纽约州）进行预处理。两组均使用预涂复合黏结剂的托槽进行黏结。初次黏结后半小时内，使用万能试验机将托槽从牙齿上取下。脱黏后，在10倍放大倍数下检查牙釉质表面，以确定残留在牙齿上的黏结剂数量。采用学生t检验比较两组的剪切黏结强度（SBS），采用卡方检验比较两种黏结系统的黏结剂残留指数（ARI）评分。
使用AdheSE One黏结至牙齿的托槽平均SBS为3.6±1.3MPa，显著低于使用Transbond Plus黏结的托槽的SBS（x = 5.9±3.2MPa，t = 2.80，P = 0.01）。两组ARI评分的比较（χ2 = 19.26）表明，托槽的失败模式也存在显著差异（P < 0.001），使用Transbond Plus黏结的牙齿上残留的黏结剂更多。
新型预混自酸蚀黏结剂的SBS需要提高，才能成功用于黏结正畸托槽。
