根管显微镜下三氧化物多聚体封闭根端的疗效观察  

Treatment of teeth with open canal systm using mineral trioxide aggregate as apical barrier under the dental operating microscope

作　　者：郭凤芹[1] 高云松[1] 牛方[1] 孙艳[1] 

机构地区：[1]合肥市口腔医院牙体牙髓科,安徽合肥230001

出　　处：《上海口腔医学》2008年第2期129-131,共3页Shanghai Journal of Stomatology

摘　　要：目的:评价根管显微镜下三氧化物聚合体(mineraltrioxideaggregate,MTA)封闭恒牙根尖孔开放形成根尖屏障的疗效。方法:选择恒牙根尖孔开放合并根尖周炎的患牙63颗,在根管显微镜下用三氧化物多聚体(MTA)严密封闭根端,形成根尖屏障后以热牙胶充填,定期复诊观察。结果:63颗患牙中,1颗(23)因牙根长及舌向倾斜,在显微镜下视野不清导致欠填,其余62颗患牙均充填严密。术后X线片显示43颗适充,17颗少量超充。3个月后复查,2例因瘘管反复不闭合行手术倒充填,2例失访,其余患牙均达到成功要求,无叩痛,复查X线片示根尖周病变明显缩小或消失,骨小梁再现。少量超填不影响疗效,总成功率为95%。结论:牙科手术显微镜下MTA封闭治疗根尖孔开放的恒牙疗效确切,准确方便。PURPOSE： To evaluate the effect of closing root apex of permanent teeth with mineral trioxide aggregate to form barricade in root tip under the dental operating microscope. METHODS： 63 teeth treated in our department with open root apex and periapieal periodontitis were selected, MTA was used to rigorously close the root apex under microscope, and thermoplastic gutta pertseha was used to fill dental root after formation of barricade in the root tip. All patients revisited regularly for clinical examinations after treatment. RESULTS： Among the 63 treated teeth, only one tooth （23） was insuffieiently filled beeause of the long dental root and unelear field of vision under mieroseope, the remaining 62 teeth were filled adequately. The postoperative dental film showed 43 teeth were properly filled while 17 had a little over-filling. The patients were reeheeked after three months, and the results showed that 2 patients underwent retro-filling because of fistula, 2 patients were lost during follow-up period, and the remaining patients reached the requirement for success including no sensitivity to percussion, improvement or disappearance of pathological changes around the root tip on dental film and regeneration of bone trabeeula. The therapeutic effect was not influenced by minor over-filling. The overall success rate was 95%. CONCLUSION： The method of using mineral trioxide aggregate （MTA）to treat teeth with root apex open is accurate and convenient and the effect is pretty good.

关 键 词：根管显微镜 三氧化物聚合体 根尖孔开放 恒牙 根尖屏障 

分 类 号：R781.05[医药卫生—口腔医学]