口腔医学 ›› 2022, Vol. 42 ›› Issue (9): 785-789.doi: 10.13591/j.cnki.kqyx.2022.09.004
刘光俊1, 马锦锦1, 陶珂金1, 江静1, 冯剑颖1,2
修回日期:
2022-02-09
出版日期:
2022-09-28
发布日期:
2022-09-20
通讯作者:
冯剑颖 E-mail:twohorsejy@163.com
基金资助:
LIU Guangjun, MA Jinjin, TAO Kejin, JIANG Jing, FENG Jianying
Revised:
2022-02-09
Online:
2022-09-28
Published:
2022-09-20
摘要: 目的 对比研究5种不同牙面残留粘接剂去除方式对釉质及托槽抗剪切粘接强度(shear bond strength,SBS)的影响。方法 选取66颗离体前磨牙,随机分为6组。A组:空白组,牙面不做任何处理;B组:金刚砂车针处理组;C组:绿砂石处理组;D组:慢速钨钢钻处理组;E组:慢速钨钢钻+抛光杯处理组;F组:慢速钨钢钻+硅粒子处理组,用上述处理方法对各组等量粘接剂样本进行磨除,记录操作时间,分别用扫描电镜和表面粗糙度仪对釉质表面进行定性和定量评价。各组处理样本粘接金属托槽后,应用万能力学测试仪检测各组托槽SBS,分析牙面粘接剂残留指数(adhesive residual index,ARI)。结果 B、C组去除效率较高,E组效率最低;扫描电镜显示F组处理后的釉质形态最接近正常牙釉质;F组表面粗糙度最低((0.48±0.13)μm),与A组无统计学差异(P>0.05);D组托槽再粘接强度最高((16.61±1.99)MPa),明显高于A组(P<0.05);各组托槽去除后的ARI指数无显著性差异(P>0.05)。结论 金刚砂车针及绿砂石去除效率较高,但对釉质损伤较大;慢速钨钢钻配合硅粒子抛光后对釉质的损伤最低,且去除效率在可接受范围;直接慢速钨钢钻处理后的牙面托槽SBS最高。
中图分类号:
刘光俊, 马锦锦, 陶珂金, 江静, 冯剑颖. 不同粘接剂去除方式对釉质微观结构及托槽抗剪切粘接强度的影响[J]. 口腔医学, 2022, 42(9): 785-789.
LIU Guangjun, MA Jinjin, TAO Kejin, JIANG Jing, FENG Jianying. Effects of different adhesive removal methods on enamel microstructure and shear bond strength of brackets[J]. Stomatology, 2022, 42(9): 785-789.
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