Scougall Vilchis Rogelio José, Yamamoto Seigo, Kitai Noriyuki, Hotta Masato, Yamamoto Kohji
Department of Prosthodontics, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho City, Gifu 501-0296, Japan.
Dent Mater J. 2007 Jan;26(1):45-51. doi: 10.4012/dmj.26.45.
This study evaluated the shear bond strength of stainless steel brackets bonded to enamel with a new fluoride-releasing orthodontic adhesive system. A total of 140 extracted human bicuspids were randomly divided into four groups. Group I (Transbond XT) was a control group in which enamel was etched with phosphoric acid. For the remaining groups, enamel was conditioned with a self-etching primer (SEP): Group II (Transbond Plus), Group III (BeautyOrtho Bond), and Group IV (BeautyOrtho Bond + Salivatect). Stainless steel brackets were bonded to all tooth samples. After which, the samples were stored, thermocycled, tested, and statistically analyzed. Besides bond strength evaluation, the adhesive remnant index (ARI) was also evaluated. The shear bond strengths of Groups II, III, and IV were significantly lower than Group I, and Group II was significantly greater than that of Group III. Concerning ARI scores, no significant differences were found between the groups. Further, no enamel fracture was observed during shear bond test with the new SEP. In conclusion, when enamel was conditioned with the new SEP, the mean values of shear bond strength yielded were lower than when it was etched with 37% phosphoric acid. Nonetheless, these mean values were higher than the average suggested by Reynolds as optimum for clinical treatment.
本研究评估了一种新型含氟正畸粘结系统将不锈钢托槽粘结至牙釉质的剪切粘结强度。总共140颗拔除的人类双尖牙被随机分为四组。第一组（Transbond XT）为对照组，其中牙釉质用磷酸酸蚀。对于其余组，牙釉质用自酸蚀底漆（SEP）进行预处理：第二组（Transbond Plus）、第三组（BeautyOrtho Bond）和第四组（BeautyOrtho Bond + Salivatect）。将不锈钢托槽粘结至所有牙齿样本。之后，对样本进行储存、热循环、测试和统计分析。除了评估粘结强度外，还评估了粘结剂残留指数（ARI）。第二组、第三组和第四组的剪切粘结强度显著低于第一组，且第二组显著高于第三组。关于ARI评分，各组之间未发现显著差异。此外，在用新型SEP进行剪切粘结测试期间未观察到牙釉质骨折。总之，当牙釉质用新型SEP预处理时，产生的剪切粘结强度平均值低于用37%磷酸酸蚀时。尽管如此，这些平均值高于雷诺兹建议的临床治疗最佳平均值。
