上颌第一恒磨牙第二根管治疗临床观察  

Clinical analysis of the treatment of the second mesiobuccal canal of maxillary first permanent molars

作　　者：林志立[1] 

机构地区：[1]广州市第一人民医院口腔科,广东省广州510000

出　　处：《中国基层医药》2013年第12期1822-1824,I0002,共4页Chinese Journal of Primary Medicine and Pharmacy

摘　　要：目的 分析上颌第一恒磨牙第二根管（MB2）治疗的临床效果。方法 选择接受第一恒磨牙根管治疗患者86例,治疗前摄X线牙片,揭顶后采用斜四边形开髓口,探查根管,若肉眼下不易查找可配合使用根管显微镜。采用逐步后退法预备根形,常规牙胶尖充填根管。结果 该组86例上颌第一恒磨牙发现MB2 58例,55例MB2位于近中颊根与腭根假想连线的近中侧,经根管治疗30 d后有MB2的根管治疗有效率为93.10%,无MB2的根管治疗有效率为100.00%,两者差异有统计学意义（χ2=48.377、11.924,均P＜0.05）。结论 MB2在上颌第一恒磨牙的发生率高,治疗时选择斜四边形的开髓口,再应用根管显微镜提供清晰视野的优势,有助于提高MB2的发现率,提高根管治疗的疗效。Objective To analyze the treatment of the second mesiobuccal canal of maxillary first permanent molars.Methods 86 patients received maxillary first permanent molar treatment were colleted,all these patients took X-ray dental films before the treatment.Oblique quadrilateral were chosen in this group.All root canal of molars were explored by probe with eyes or under the root canal microscope.The root canal was prepared according to the step-back technique.Every root canal was treated with gutta-percha.Results 58-MB2 were found in all these 86-cases maxillary first permanent molar.55-MB2 located the mesial side of the line connected the mesiobuccal root and the palatal root.30d after the root canal therapy,the effective rate in the group with MB2 was 93.10%,while the effective rate in the group without MB2 was 100.00%.There was significant difference between the two groups（χ2=48.377,11.924,all P〈0.05）.Conclusion The incidence of MB2 of maxillary first permanent molar is very high.During treatment,oblique quadrilateral should be chosen combined with the root canal microscope.This method could improve the detection rate.EDTA could reduce the difficulty of root canal preparation.

关 键 词：磨牙 根管疗法 

分 类 号：R781.05[医药卫生—口腔医学]