摘要
目的评价激光辅助去托槽后牙面再染色的程度。方法选取南京市挹江门社区卫生服务中心2014年1月至2016年1月收集的因正畸需要而拔除的30颗健康前磨牙为研究对象,将牙齿随机分成A、B、C 3组:A组采用激光、矽粒子去托槽,B组采用去托槽钳、矽粒子进行去托槽,C组采用去托槽钳、碳钨钻、矽粒子进行去托槽。结果 C组操作时间较B组明显缩短,与A组相比差异不大。去除托槽后,对三组釉质损失量进行统计,三组间两两对比,差异显著,C组牙釉质损失量与A、B相比明显增多。B组去除托槽后和着色处理后牙面的L*值,与粘结托槽前相比显著下降;与粘结托槽前和去托槽后相比,C组着色处理后L*值显著增加。与粘结托槽前相比,去除托槽后,C组a*值显著下降;着色处理后,三组a*值均显著上升。A、B、C组的b*值,着色处理后显著上升。着色处理后,B组△b*值比A组显著正向移动。经扫描电镜显示,激光辅助去托槽后牙釉质表面损伤较小,色泽未见明显变化。结论激光辅助去除正畸托槽及残留剂的之法效果较好,对牙面影响较小,操作时间符合临床习惯,不易引起牙面再染色,具有临床应用推广价值。
Objective To evaluate the laser aided debonding and the degree of staining of the teeth surface. Methods 30 healthy premolars extracted from January 2014 to January 2016 in our hospital were selected as the research objects. A month later,the teeth were randomly divided into three groups（A,B and C） ： group A using laser and silicon particles to bracket,group B using bracket forceps,silicon particle,group C was debonded using bracket forceps,tungsten carbide drill,and silicon particle. Results The operation time of statistics in group C was shortened obviously compared with group B. After the removal of the brackets on the three groups of enamel loss statistics,among the three groups in pairwise comparison,the difference was significant,enamel loss in group C significantly increased compared with group A and group B. Before a group of bonded brackets,the brackets were removed and colored in group A. After the removal of the brackets and coloring treatment,the L＊ value in group B on the tooth surfaces decreased significantly compared with before bonding; compared with the prior to bonding and after debonding,the L＊ values in group C after coloring treatment increased significantly. Compared with before bonding,after the removal of the brackets,the A＊ value in group C decreased significantly; after staining,the a＊ values of the three groups significantly increased. The B＊ value of group A,B and C significantly increased after shading treatment. After coloring treatment,the △b＊ value in group B showed significantly positive displacement compared with group A. The SEM showed that the laser assisted debonding caused less damage on the enamel surface after the bracket,which had no obvious color change. Conclusion The effect of the removal of orthodontic brackets and residual agent method with laser assisted is good,which has less impact on the tooth surface,and its operating time conforms to clinical practice,which is not easy to cause tooth restaining,and then,has the value of clinical application.
出处
《口腔医学》
CAS
2016年第12期1135-1138,共4页
Stomatology
关键词
正畸治疗
激光辅助
去托槽后
牙面再染色
orthodontic treatment
laser aided debonding
after the bracket
the tooth surface
