脉冲Nd:YAG激光照射牙硬组织后拉力实验  

The Bond Strength Experiment of Enamel and Dentin Exposed to Pulsed Nd: YAG Laser

作　　者：黄炜[1] 许肖杰[2] 朱建中[1] 林斌[2] 陈钰清[2] 顾锡荣[1] 

机构地区：[1]浙江省人民医院,杭州市310014 [2]浙江大学光电系现代国家光学仪器国家重点实验室国家光学仪器工程技术研究中心

出　　处：《中国激光医学杂志》2005年第2期80-82,共3页Chinese Journal of Laser Medicine & Surgery

基　　金：浙江省自然科学基金资助项目(395167)

摘　　要：目的研究不同能量和不同频率脉冲Nd:YAG激光照射牙表面后,牙齿与光敏树脂间的拉力大小。方法选择一致性较好的新鲜离体人牙,用高速转头制备各类洞型。然后分别用磷酸腐蚀和不同能量和频率的脉冲Nd:YAG激光进行照射,以光敏树脂进行光固化后做拉力实验并进行比较。结果脉冲Nd:YAG激光刻蚀人牙光固化树脂平均拉力68.9-75.5Kg/cm2,酸腐蚀光固化树脂平均拉力为20.6Kg/cm2,差异有显著意义(P<0.05)。结论用脉冲Nd:YAG激光照射代替磷酸进行牙齿表面处理可增加牙齿与光敏树脂间的粘结力。Objective To analyze the bond strength between photosensitive resin with enamel and dentin exposed to the pulsed Nd: YAG laser followed diverse energy and frequency. Methods The fresh ex vivo teeth with better concordance were selected and divided into 5 groups with same condition. All kinds of holes have been made with high speed wheel. Then the dentin were processed with phosphine acid and by pulsed laser-irradiation. The bond strength experiment could be done and analysed after light curing by photosensitive resin. Results The experiment has indicated the feasibility of pulsed Nd: YAG laser irritation to etch dentin. Compared with phosphine acid, the bond strength of the composite to enamel and dentin was stronger with given parameters. Conclusions Substituted phosphine acid with pulsed Nd: YAG laser irritation could increase the bond strength between photosersitive resin with enamel and dentin.

关 键 词：脉冲ND:YAG激光照射 拉力 牙硬组织 实验 光固化树脂 光敏树脂 不同频率 方法选择 激光刻蚀 表面处理 牙齿 一致性 粘结力 能量 人牙 腐蚀 磷酸 平均 

分 类 号：R781.05[医药卫生—口腔医学]