应用龋病渗透剂后正畸托槽与牙釉质的剪切粘结强度。
Shear bond strength of orthodontic brackets to enamel after application of a caries infiltrant.
作者信息
Mews Laura, Kern Matthias, Ciesielski Robert, Fischer-Brandies Helge, Koos Bernd
机构信息
a Postdoctoral student, Department of Orthodontics, Christian-Albrechts University, Kiel, Germany.
b Professor and Chair, Department of Prosthodontics, Propaedeutics and Dental Materials, Christian-Albrechts University, Kiel, Germany.
出版信息
Angle Orthod. 2015 Jul;85(4):645-50. doi: 10.2319/013014-82.1. Epub 2014 Aug 26.
OBJECTIVE
To examine differences in the shear bond strength of orthodontic brackets on differently mineralized enamel surfaces after applying a caries infiltrant or conventional adhesive.
MATERIALS AND METHODS
A total of 320 bovine incisors were assigned to eight pretreated groups, and the shear force required for debonding was recorded. Residual adhesive was evaluated by light microscopy using the adhesive remnant index. Statistical analysis included Kolmogorov-Smirnov, analysis of variance (ANOVA), and Scheffé tests.
RESULTS
The highest bond strength (18.8 ± 4.4 MPa) was obtained after use of the caries infiltrant. More residual adhesive and fewer enamel defects were observed on infiltrated enamel surfaces. Brackets on demineralized enamel produced multiple enamel defects.
CONCLUSIONS
Acceptable bond strengths were obtained with all material combinations. A caries-infiltrant applied before bracket fixation has a protective effect, especially on demineralized enamel.
目的
研究在应用龋病渗透剂或传统黏结剂后，正畸托槽在不同矿化程度釉质表面的剪切黏结强度差异。
材料与方法
将320颗牛切牙分为8个预处理组，记录托槽脱黏所需的剪切力。使用黏结剂残留指数通过光学显微镜评估残留黏结剂。统计分析包括柯尔莫哥洛夫-斯米尔诺夫检验、方差分析（ANOVA）和谢费检验。
结果
使用龋病渗透剂后获得最高黏结强度（18.8±4.4MPa）。在渗透后的釉质表面观察到更多残留黏结剂和更少的釉质缺损。脱矿釉质上的托槽产生多处釉质缺损。
结论
所有材料组合均获得了可接受的黏结强度。在托槽固定前应用龋病渗透剂具有保护作用，尤其是对脱矿釉质。
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