Rezk-Lega F, Ogaard B
Department of Orthodontics, Dental Faculty, University of Oslo, Norway.
Am J Orthod Dentofacial Orthop. 1991 Oct;100(4):357-61. doi: 10.1016/0889-5406(91)70074-7.
Tensile bond force of three glass ionomers was evaluated in vitro. Ketac-Cem and Aqua-Cem, two conventional cements, and light-cured Vitrabond were used in this study. The results were then compared with the values obtained for a composite resin (Concise) by means of the Mann-Whitney two-sample rank test adjusted for ties. The composite resin had a significantly higher bond force (152.5 N) than any of the other adhesives (5.5 to 27.53 N) used. Tensile bond strength was also calculated and the failure bond site investigated on the enamel surface was evaluated. The composite resin and the two conventional glass ionomers used had high cement percentages (86% to 62%) adhering to the enamel surface. Cement remaining on enamel was lower (20%) for the light-cured glass ionomer. It was concluded that the in vitro bond force of Vitrabond might be adequate for orthodontic bracket bonding.
在体外评估了三种玻璃离子水门汀的拉伸粘结力。本研究使用了两种传统水门汀Ketac-Cem和Aqua-Cem，以及光固化的Vitrabond。然后通过针对 ties 调整的Mann-Whitney双样本秩和检验，将结果与复合树脂（Concise）获得的值进行比较。复合树脂的粘结力（152.5 N）明显高于所使用的任何其他粘合剂（5.5至27.53 N）。还计算了拉伸粘结强度，并评估了在釉质表面上研究的粘结失效部位。所使用的复合树脂和两种传统玻璃离子水门汀在釉质表面上具有较高的粘结剂百分比（86%至62%）。光固化玻璃离子水门汀在釉质上残留的粘结剂较低（20%）。得出的结论是，Vitrabond的体外粘结力可能足以用于正畸托槽粘结。
