Stumpf Aisha de Souza Gomes, Bergmann Carlos, Prietsch José Renato, Vicenzi Juliane
UFRGS, Brazil.
Dental Press J Orthod. 2013 Mar-Apr;18(2):76-80. doi: 10.1590/s2176-94512013000200017.
To determine the shear bond strength of orthodontic brackets using color change adhesives that are supposed to aid in removing excess of bonding material and compare them to a traditional adhesive.
Ninety metallic and ninety ceramic brackets were bonded to bovine incisors using two color change adhesives and a regular one. A tensile stress was applied by a universal testing machine. The teeth were observed in a microscope after debonding in order to determine the Adhesive Remnant Index (ARI).
The statistical analysis (ANOVA, Tukey, and Kruskall-Wallis tests) demonstrated that the mean bond strength presented no difference when metallic and ceramic brackets were compared, but the bond resistance values were significantly different for the three adhesives used. The most common ARI outcome was the entire adhesive remaining on the enamel.
The bond strength was similar for metallic and ceramic brackets when the same adhesive system was used. ARI scores demonstrated that bonding with these adhesives is safe even when ceramic brackets were used. On the other hand, bond strength was too low for orthodontic purposes when Ortho Lite Cure was used.
使用旨在帮助去除多余粘结材料的变色粘合剂来测定正畸托槽的剪切粘结强度，并将其与传统粘合剂进行比较。
使用两种变色粘合剂和一种常规粘合剂将90个金属托槽和90个陶瓷托槽粘结到牛切牙上。通过万能试验机施加拉伸应力。脱粘后在显微镜下观察牙齿，以确定粘结剂残留指数（ARI）。
统计分析（方差分析、Tukey检验和Kruskall-Wallis检验）表明，比较金属托槽和陶瓷托槽时，平均粘结强度没有差异，但所使用的三种粘合剂的粘结阻力值存在显著差异。最常见的ARI结果是所有粘结剂残留在牙釉质上。
使用相同的粘结剂系统时，金属托槽和陶瓷托槽的粘结强度相似。ARI评分表明，即使使用陶瓷托槽，使用这些粘合剂进行粘结也是安全的。另一方面，使用Ortho Lite Cure时，粘结强度对于正畸目的来说过低。
