Robaski Aliden-Willian, Pamato Saulo, Tomás-de Oliveira Marcelo, Pereira Jefferson-Ricardo
DDS, MS, Department of Health Science, University of Southern Santa Catarina, Tubarão, SC, Brazil.
DDS, PhD, Department of Dental Materials, University of Southern Santa Catarina, Tubarão, SC, Brazil.
J Clin Exp Dent. 2017 Jul 1;9(7):e919-e924. doi: 10.4317/jced.53576. eCollection 2017 Jul.
The enamel condition and the quality of surface are points that need to be considered for achieving optimal efficiency in the treatment with orthodontic brackets. The aim of this study was to assess the immediate bond strength of metallic brackets cemented to dental.
Forty human premolars were double-sectioned, placed in PVC matrices and randomly divided into 10 groups (n=8). They received artificial saliva contamination before or after the application of adhesive systems, except for the control groups. The metallic brackets were cemented using two orthodontic cements (Transbond™ Plus Color Change, 3M Unitek e Transbond™ XT Light, 3M Unitek). The specimens were subjected to mechanical shear bond strength testing and classified according to the fracture pattern. The results were analyzed using a two-way ANOVA and Tukey's test for multiple comparisons (<0.05).
ANOVA analysis showed statistically significant differences between the groups (=0.01). The Tukey's multiple comparison test indicated statistically significant difference between G6 and G7 groups (<0.05). A high prevalence of adhesive failure in the groups receiving the hydrophobic adhesive system.
The saliva contamination prior to the application of a hydrophobic simplified conventional adhesive system was responsible for decreasing the immediate bond strength values of brackets cemented on the dental enamel. Bonding, orthodontic brackets, shear bond strength, saliva, adhesive systems.
在正畸托槽治疗中，牙釉质状况和表面质量是实现最佳治疗效果时需要考虑的因素。本研究的目的是评估粘结在牙齿上的金属托槽的即时粘结强度。
将40颗人类前磨牙进行双截面处理，置于PVC基质中，并随机分为10组（n = 8）。除对照组外，在应用粘结系统之前或之后，它们均受到人工唾液污染。使用两种正畸粘结剂（Transbond™ Plus Color Change，3M Unitek和Transbond™ XT Light，3M Unitek）粘结金属托槽。对标本进行机械剪切粘结强度测试，并根据断裂模式进行分类。使用双向方差分析和Tukey检验进行多重比较（<0.05）分析结果。
方差分析显示组间存在统计学显著差异（= 0.01）。Tukey多重比较检验表明G6组和G7组之间存在统计学显著差异（<0.05）。在接受疏水粘结系统的组中，粘结失败的发生率很高。
在应用疏水简化传统粘结系统之前的唾液污染是导致粘结在牙釉质上的托槽即时粘结强度值降低的原因。粘结、正畸托槽、剪切粘结强度、唾液、粘结系统。
