Mizrahi B, Mizrahi E, Cleaton-Jones P E
Br J Orthod. 1995 Aug;22(3):237-43. doi: 10.1179/bjo.22.3.237.
Previous studies have shown that due to poor adhesion between bonding resins and stainless steel orthodontic brackets, this interface remains a weak link in clinical orthodontic practice. A paste-like substance, Sebond, has been developed in order to strengthen the weak link between metal and resin. The present study was carried out to determine the effect on the shear bond strength, of pretreating the bracket base with Sebond. Two composite resins, Concise Orthodontic Bonding System and Nimetic-Grip were tested, using 40 orthodontic brackets for each resin; 20 brackets were pretreated with Sebond and the remaining 20 acted as controls. Of the Sebond brackets 10 were sandblasted prior to Sebond application. The bonded brackets were stored in water at 37 degrees C for 14 days after which they were tested to failure in the shear mode. Analysis of the results, using a general linear models analysis, showed that pretreating the brackets with Sebond significantly reduced shear bond strength (P < 0.001).
以往研究表明，由于粘结树脂与不锈钢正畸托槽之间的粘结性较差，在临床正畸实践中，该界面仍是一个薄弱环节。为了加强金属与树脂之间的薄弱环节，已研发出一种膏状物质Sebond。本研究旨在确定用Sebond预处理托槽基底对剪切粘结强度的影响。测试了两种复合树脂，即简明正畸粘结系统和Nimetic - Grip，每种树脂使用40个正畸托槽；20个托槽用Sebond预处理，其余20个作为对照。在使用Sebond之前，对其中10个经Sebond处理的托槽进行了喷砂处理。粘结后的托槽在37摄氏度的水中储存14天，之后进行剪切模式下的破坏测试。使用一般线性模型分析对结果进行分析，结果表明用Sebond预处理托槽会显著降低剪切粘结强度（P < 0.001）。
