Er:YAG激光照射对牙釉质与玻璃离子粘接的影响

发布时间：2018-06-09 14:24

本文选题：Er + YAG激光　；参考：《激光杂志》2014年01期

【摘要】：目的:采用剪切力测试,比较Er:YAG激光照射对牙釉质与玻璃离子之间剪切粘接强度的影响.方法:选取105颗年轻前磨牙、第三磨牙,用涡轮手机按近远中方向将离体牙切割成颊/舌两部分.将受试牙随机分成7组,1组:裂钻预备,2组:裂钻+37%磷酸,3组:裂钻+玻璃离子液,4组:Er:YAG激光预备,5组:Er:YAG激光+37%磷酸,6组:37%磷酸+玻璃离子液,7组:Er:YAG激光+二次激光.玻璃离子充填,将粘接试件置于37°蒸馏水中储存24小时后进行剪切力测试,计算粘接试件牙的抗剪切粘接强度.扫描电子显微镜观察牙釉质经不同处理后的表面形态变化。结果:37%磷酸和玻璃离子液预处理均有助于即刻剪切粘接强度的提高,差异有统计学意义(p0.05)。激光预备较裂钻预备的即刻剪切粘接强度大,差异有统计学意义(p0.05)。而在激光预备面的基础上使用37%磷酸预处理和二次激光的应用与单纯的激光预备相比,其即刻剪切粘接强度并未提高,差异无统计学意义(p0.05)。结论:Er:YAG激光预备、37%磷酸和玻璃离子液都可以提高牙釉质和玻璃离子之间的剪切粘接强度.37%磷酸、玻璃离子液预处理及二次激光不能使Er:YAG激光预备后的剪切粘接强度提高。
[Abstract]:Aim: to compare the effect of er: YAG laser irradiation on shear bonding strength between enamel and glass ion by shear force test. Methods: 105 young premolars and third molars were selected. The tested teeth were randomly divided into 7 groups: group 1: drill preparation group (n = 2): split drill group (n = 3): vitreous ion liquid group (n = 4): glass ionomer liquid group (n = 4): group 1 (n = 5): 1% er: YAG laser (n = 5): n = 37% glass phosphate ionomer group (n = 7), er: YAG laser (n = 7). The adhesive specimens were stored in 37 掳distilled water for 24 hours. The shear strength of the bonded teeth was calculated. The surface morphology of enamel was observed by scanning electron microscope (SEM). Results the pretreatment of 10% phosphoric acid and glass ionomer solution could improve the bonding strength of immediate shear, and the difference was statistically significant (p 0.05). The strength of immediate shear bonding in laser preparation was greater than that in drill preparation, and the difference was statistically significant (p 0.05). On the basis of laser preparation surface, the application of 37% phosphoric acid pretreatment and secondary laser preparation did not increase the immediate shear bonding strength compared with the simple laser preparation, and the difference was not statistically significant (p 0.05). Conclusion the shear bonding strength between enamel and glass ion can be increased by 37% phosphoric acid and glass ionomer solution. Glass ionomer solution pretreatment and secondary laser can not improve the shear bonding strength after er: YAG laser preparation.
【作者单位】：广州医科大学口腔医学院附属口腔医院口腔医学重点实验室;
【分类号】：R782

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