两种托槽正畸治疗前后表面形貌及元素成分变化的研究

Changes in Surface Morphology and Elements Composition of Orthodontic Bracket Before and After Treatment

目的:回收分析两种临床常用品牌的金属托槽,初步评价其经过临床应用后表面形貌及表面元素的变化情况。方法:应用扫描电子显微镜,定性观察分析两种托槽正畸治疗前后槽沟底部的表面形貌,并应用X射线能谱仪测试表面的元素成分。结果:两种托槽经过患者口内正畸治疗的应用后,表面有不同程度的摩擦磨损及菌斑堆积现象,金属表面的元素成分变化不大。结论:两种托槽在口内应用的过程中没有明显的离子沉积和释放现象。

Objective:To analyze the surface topography and surface elements of two metal brackets after clinical application.Methods:The scanning electron microscope was used to observe the slot surface morphology before and after orthodontic treatment.X-ray energy-dispersive spectrometry was used to test the elemental composition of the surface.Results:After clinical use,traces of friction and wear and different plaque accumulation could be found on the bracket surface.However,the surface element did not change much.Conclusion:After exposure in mouth,the elemental composition on the metal surface changed little without significant ion deposition and release phenomenon.