Sayinsu Korkmaz, Isik Fulya, Sezen Serdar, Aydemir Bulent
Department of Orthodontics, Yeditepe University, Istanbul, Turkey.
Angle Orthod. 2006 Mar;76(2):306-9. doi: 10.1043/0003-3219(2006)076[0306:NPPEOS]2.0.CO;2.
One of the solutions for the problem of white spot lesions has been the application of a polymer coating to the labial enamel surface. The aim of this study is to find out whether the liquid polish BisCover affects the bond strength of brackets bonded with a light-cured system (Transbond XT) and a no-mix system (Unite). Standard stainless steel premolar brackets were bonded to 100 permanent human premolars randomly divided into five equal groups. Two different enamel surface conditions were studied: dry and varnished with BisCover. For each enamel surface condition, two orthodontic adhesive systems were used: a light-cured system (Transbond XT) and a no-mix system (Unite). All teeth were conditioned with 37% phosphoric acid for 30 seconds, followed by thorough washing and drying. The teeth in groups 1 and 2 were bonded with Transbond XT and Unite, respectively. For groups 3, 4, and 5, a thin layer of BisCover was applied to the etched enamel with a brush and light cured for 15 seconds. In group 3, a thin layer of Transbond XT primer was applied, whereas in group 5, no additional primer was used on BisCover. In groups 3 and 5, the brackets were bonded with Transbond XT adhesive resin. Group 4 was bonded with no-mix Unite. Shear forces were applied to the samples by a Zwick Universal test machine, and bond strengths measured in megapascals. The results revealed that shear bond strengths of the groups did not differ significantly from each other.
解决白斑病变问题的方法之一是在唇面釉质表面应用聚合物涂层。本研究的目的是探究液体抛光剂BisCover是否会影响用光固化系统（Transbond XT）和免混合系统（Unite）粘结的托槽的粘结强度。将标准不锈钢前磨牙托槽粘结到100颗恒牙前磨牙上，这些牙齿随机分为五组，每组数量相等。研究了两种不同的釉质表面状况：干燥的和用BisCover涂覆的。对于每种釉质表面状况，使用两种正畸粘结系统：光固化系统（Transbond XT）和免混合系统（Unite）。所有牙齿均用37%的磷酸处理30秒，然后彻底冲洗并干燥。第1组和第2组的牙齿分别用Transbond XT和Unite粘结。对于第3、4和5组，用刷子在酸蚀后的釉质上涂一层薄薄的BisCover并光固化15秒。在第3组中，涂一层薄薄的Transbond XT底漆，而在第5组中，在BisCover上不使用额外的底漆。在第3组和第5组中，托槽用Transbond XT粘结树脂粘结。第4组用免混合的Unite粘结。通过Zwick万能试验机对样品施加剪切力，并以兆帕为单位测量粘结强度。结果显示，各组的剪切粘结强度之间没有显著差异。
