Youssefinia Sara, Mortezai Omid
Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
Indian J Dent Res. 2018 Sep-Oct;29(5):690-692. doi: 10.4103/ijdr.IJDR_780_16.
The purpose of this study was to compare the shear bond strength of color-change adhesive with a conventional light-cure adhesive at different debonding times.
Seventy-two intact extracted human permanent premolar teeth were used in this research. The brackets were bonded with Transbond XT (Group I) and Transbond Plus color change adhesive (Group II). Each of the two adhesive groups were then further divided into three subgroups of 12 specimens each, for a total of six subgroups. The subgroups represented the three different time points to be tested, 15 min, 24 h, and 1 week. Then, the shear bond strength (SBS) of the brackets was tested with a Universal Testing Machine. Adhesive remnant index (ARI) scores were calculated for each debonded teeth.
Although Transbond XT yielded the lowest SBS values at 1 week, there was no significant difference between samples regarding shear bond at different times and ARI.
The application of these adhesives did not affect bond strength. Both adhesives demonstrated acceptable bond strength to withstand orthodontic forces throughout the experiment.
本研究的目的是比较变色粘合剂与传统光固化粘合剂在不同脱粘时间下的剪切粘结强度。
本研究使用了72颗完整拔除的人类恒牙前磨牙。托槽分别用Transbond XT（第一组）和Transbond Plus变色粘合剂（第二组）粘结。然后，将两个粘合剂组中的每一组进一步分为三个亚组，每组12个样本，共六个亚组。这些亚组代表了三个不同的测试时间点，即15分钟、24小时和1周。然后，用万能试验机测试托槽的剪切粘结强度（SBS）。计算每个脱粘牙齿的粘结剂残留指数（ARI）得分。
尽管Transbond XT在1周时产生的SBS值最低，但不同时间的样本在剪切粘结和ARI方面没有显著差异。
这些粘合剂的应用不影响粘结强度。在整个实验过程中，两种粘合剂都表现出可接受的粘结强度以承受正畸力。
