摘要
目的评价几种方法去除残留粘结剂后对牙釉质表面的影响,为临床提供依据。方法挑选因正畸需要而拔除的健康前磨牙60颗。将其随机分成3组,第1组:碳钨钻+矽粒子组;第2组:超声洁治+矽粒子组;第3组:矽粒子组。每组20颗。并对处理后的牙面粗糙度差值、时间进行统计学检验。扫描电镜观察处理后的牙面形态。结果第1、2、3组处理前后的表面粗糙度差值有统计学意义(P<0.05)。处理时间比较差异有统计学意义(P<0.05),第3组所用时间最长。扫描电镜观察,牙齿表面结构均有损伤。而第3组,表面损伤较浅,牙面的形态结构破坏较小。结论矽粒子是碳钨钻和超声洁治去除牙齿表面残留粘结剂的必要补充,能很好地保护牙齿表面的形态结构。
Objective To observe the effect of several residual adhesive methods on the enamel surface ,and conduct lab evalua-tion .Methods Sixty premolars extracted because of orthodontic treatment .And all the teeth were randomly divided into 3 groups . Group 1：tungsten carbide burs ＋ silicon particles ;Group 2 ：ultrasonic scaling ＋ silicon particles ;Group 3：silicon particles ,each with 20 premolars .After underwent several methods ,the surface roughness differences ,operation time were determined and ob-served with the scanning electron microscope .And the result was statistically analyzed .Results There were significant differences in the surface roughness and operation time among the three groups （P〈0 .05） ,The scanning electron microscope after polishing showed that the teeth surface had different degrees of injury ,the silica particles group had less superficial scratch .Conclusion The tungsten carbide burs and ultrasonic instrument for debonding before the silica particles had less superficial scratch .
出处
《重庆医学》
CAS
CSCD
北大核心
2013年第29期3503-3504,共2页
Chongqing medicine
关键词
表面粗糙度
扫描电镜
矽粒子
去粘结
碳钨钻
surface roughness
scanning electron microscope
silicon particles
debonding
tungsten carbide burs
作者简介
李有名（1974～），硕士，中级职称，主要从事口腔医学的研究。
