Elekdag-Turk Selma, Cakmak Fethiye, Isci Devrim, Turk Tamer
Department of Orthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Samsun, Turkey.
Angle Orthod. 2008 Nov;78(6):1095-100. doi: 10.2319/112507-552.1.
To compare the clinical performance of a self-etching primer (SEP) with a conventional two-step etch and primer method (CM).
Study subjects were 39 patients with a mean age of 15 years 7 months. Six hundred and eighty-eight brackets were bonded by one operator with a split-mouth design, using Transbond Plus Self-Etching Primer or a conventional two-step etch and primer (Transbond XT). The survival rate of the brackets was estimated by the Kaplan-Meier analysis. Bracket survival distributions with respect to bonding procedure, dental arch, type of tooth (incisor, canine, and premolar) and patients' gender were compared using the log-rank test. Bond failure interface was determined using the Adhesive Remnant Index (ARI).
The bond failure rates of SEP and CM were 4.7% and 1.7%, respectively. A significant difference was found between the bonding procedures using the log-rank test (P < .05). Furthermore, canine and premolar teeth displayed a lower survival rate than incisor teeth (P < .05). Survival rates did not show significant differences between the upper and lower dental arches and patients' gender (P > .05). No significant difference was observed for ARI scores (P > .05).
These findings indicate that the SEP (Transbond Plus) can be effectively used to bond orthodontic brackets.
比较自酸蚀底漆（SEP）与传统两步酸蚀和底漆法（CM）的临床性能。
研究对象为39例平均年龄15岁7个月的患者。由一名操作人员采用双盲设计，使用Transbond Plus自酸蚀底漆或传统两步酸蚀和底漆（Transbond XT）粘结688个托槽。采用Kaplan-Meier分析评估托槽的存活率。使用对数秩检验比较托槽存活率在粘结程序、牙弓、牙齿类型（切牙、尖牙和前磨牙）和患者性别的分布情况。使用粘结剂残留指数（ARI）确定粘结失败界面。
SEP和CM的粘结失败率分别为4.7%和1.7%。使用对数秩检验发现粘结程序之间存在显著差异（P < 0.05）。此外，尖牙和前磨牙的存活率低于切牙（P < 0.05）。上下牙弓和患者性别之间的存活率没有显著差异（P > 0.05）。ARI评分没有显著差异（P > 0.05）。
这些结果表明SEP（Transbond Plus）可有效地用于粘结正畸托槽。
