使用自酸蚀底漆的正畸粘接变色粘合剂的粘结强度比较
Bond strength comparison of color-change adhesives for orthodontic bonding using a self-etching primer.
作者信息
Ekhlassi Sara, English Jeryl D, Ontiveros Joe C, Powers John M, Bussa Harry I, Frey Gary N, Colville Clark D, Ellis Randy K
机构信息
Houston Department of Orthodontics, The University of Texas Dental Branch, Houston, TX, USA.
出版信息
Clin Cosmet Investig Dent. 2011 Jun 29;3:39-44. doi: 10.2147/CCIDEN.S13646. Print 2011.
BACKGROUND
The purpose of this study was to compare the shear bond strengths of two color-change adhesives with a commonly used conventional light-cure adhesive while using a self-etching primer, and to compare any changes in shear bond strengths over time.
METHODS
One hundred and eighty extracted bovine incisors were randomly divided into nine groups of 20 teeth each. The teeth were prepared with a self-etching primer (Transbond™ Plus) Metal lower incisor brackets were bonded directly to each tooth with two different color-change adhesives (TransbondPlus and Grēngloo™) and a control (Transbond XT). The teeth were debonded at three different time points (15 minutes, 24 hours, 1 week) using an Instron at 1.0 mm/min. The teeth that were to be debonded at 24 hours and 1 week were stored in distilled water at 37°C to simulate the oral environment. The data were analyzed by two-way analysis of variance and with Fisher's protected least-significant difference multiple comparisons test at the P < 0.05 level of significance. Adhesive remnant index (ARI) scores were calculated for each debonded tooth.
RESULTS
Transbond Plus at 1 week had the highest mean shear bond strength (14.7 mPa). Grēngloo tested at 24 hours had the lowest mean shear bond strength (11.3 mPa). The mean shear bond strengths for the remaining seven groups had a range of 12-14.5 mPa. Grēngloo had >80% samples presenting with an ARI score of 1 at all times. Interestingly, both Transbond groups had ARI scores of 3 in more than 50% of their samples.
CONCLUSION
Time had no significant effect on the mean shear bond strength of Transbond XT, Grēngloo, or Transbond Plus adhesive.
背景
本研究的目的是在使用自酸蚀底漆的情况下，比较两种变色粘结剂与一种常用的传统光固化粘结剂的剪切粘结强度，并比较剪切粘结强度随时间的变化。
方法
180颗拔除的牛切牙随机分为9组，每组20颗牙。用自酸蚀底漆（Transbond™ Plus）处理牙齿。金属下切牙托槽分别用两种不同的变色粘结剂（TransbondPlus和Grēngloo™）和一种对照粘结剂（Transbond XT）直接粘结到每颗牙齿上。使用Instron以1.0 mm/min的速度在三个不同时间点（15分钟、24小时、1周）使牙齿脱粘。在24小时和1周时脱粘的牙齿储存在37°C的蒸馏水中以模拟口腔环境。数据采用双向方差分析，并在P < 0.05显著性水平下用Fisher保护最小显著差异多重比较检验进行分析。计算每颗脱粘牙齿的粘结剂残留指数（ARI）评分。
结果
1周时Transbond Plus的平均剪切粘结强度最高（14.7 mPa）。24小时时测试的Grēngloo的平均剪切粘结强度最低（11.3 mPa）。其余七组的平均剪切粘结强度范围为12 - 14.5 mPa。Grēngloo在所有时间点均有>80%的样本ARI评分为1。有趣的是，两个Transbond组在超过50%的样本中ARI评分为3。
结论
时间对Transbond XT、Grēngloo或Transbond Plus粘结剂的平均剪切粘结强度没有显著影响。
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