北京大学学报(医学版) ›› 2014, Vol. 46 ›› Issue (3): 474-477.

• 论著 • 上一篇    下一篇

乳牙应用Er:YAG激光备洞充填微渗漏效果的离体研究

谢窈1,张笋2△,葛立宏2   

  1. (1.北京大学口腔医院门诊部牙体牙髓科,北京100034;2.北京大学口腔医院儿童口腔科,北京100081)
  • 出版日期:2014-06-18 发布日期:2014-06-18

Marginal microleakage of cavities prepared with Er:YAG laser on primary teeth  in vitro

XIE Yao1,ZHANG Sun2△,GE Li-hong2   

  1. (1.Department of Endodontic Dentistry, First Clinical Divison, Peking University School and Hospital of Stomatology, Beijing 100034, China;2.Department of Pediatric Dentistry, Peking University School and Hopstital of Stomatology, Beijing 100081,China)
  • Online:2014-06-18 Published:2014-06-18

摘要: 目的:Er:YAG激光备洞和传统的涡轮钻针备洞,使用不同粘接系统和界面处理方式,对乳牙树脂充填的微渗漏效果进行研究。方法:50颗乳牙随机分为5组,第1组:涡轮钻针预备+全酸蚀粘接充填;第2组:涡轮钻针预备+自酸蚀粘接充填;第3组:Er:YAG激光预备+全酸蚀粘接充填;第4组:Er:YAG激光预备+自酸蚀粘接充填;第5组:Er:YAG激光预备后不酸蚀+配合全酸蚀粘接剂充填,对不同组进行微渗漏体视显微镜检查。结果:涡轮钻针+全酸蚀组和涡轮钻针+自酸蚀组的微渗漏分别高于Er:YAG激光+全酸蚀组和Er:YAG激光+自酸蚀组(P<0.05);涡轮钻针+全酸蚀组与Er:YAG激光+不酸蚀组的微渗漏差异无统计学意义。Er:YAG激光预备的3个组中,全酸蚀组和自酸蚀组的微渗漏都低于不酸蚀组,但组间差异无统计学意义。结论:激光并不能代替全酸蚀剂的作用,激光照射后使用自酸蚀粘接系统,充填体的边缘适合性更好,微渗漏小。

关键词: 激光疗法, 牙窝洞制备, 微渗漏, 牙,

Abstract: Objective:To investigate the marginal microleakage after cavity preparation by Er:YAG laser and conventional bur applying different adhesive systems, conditioning surface with acid etching or not. Methods: In the study, 50 primary teeth were divided into 5 groups. (1) Bur+etch-and-rinse system, (2) Bur+self-etching system, (3) Er:YAG laser+etch-and-rinse system, (4) Er:YAG laser+self-etching system, (5) Er:YAG laser+none-etched.  The class V cavities were all filled with composite resin. The microleakage tests were performed, observed and scored under stereomicroscope. Results: Bur+etchand-rinse group had higher microleakage than Er:YAG laser+etch-and-rinse group, and Bur+self-etching group had higher microleakage than Er:YAG laser+self-etching group(P<0.05). There was no difference between Er:YAG laser+etch-and-rinse group and Er:YAG laser+self-etching group, while they had significantly lower microleakage than that of Er:YAG+none-etched group. Conclusion: Composite resin restoration showed less marginal microleakage when all-in-one self-etch system was used after irradiation by Er:YAG laser on primary teeth.

Key words: Laser therapy, Dental cavity preparation, Dental microleakage, Tooth, deciduous

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