无机三氧化聚合物根尖屏障术治疗根尖孔未形成患牙的临床评价  

A clinical evaluation of MTA barrier for root-end closure of open apex teeth in patients

作　　者：郭世梁[1] 万方 杨卫东[1] 

机构地区：[1]南京大学医学院附属口腔医院南京市口腔医院牙体牙髓科,江苏南京210008

出　　处：《口腔医学》2017年第10期918-921,共4页Stomatology

基　　金：江苏省科技项目(BE2016623);江苏省南京市卫生局医学科技发展项目(YKK15113)

摘　　要：目的评价无机三氧化聚合物(mineral trioxide aggregate,MTA)作为根尖屏障材料封闭根尖孔未形成患牙的临床疗效。方法选取根尖孔未形成的28颗患牙。施行标准根管预备程序、氢氧化钙消毒根管1周后在手术显微镜下将可吸收性胶原海绵和MTA放置于根尖区,制备人工根尖屏障。1 d后复诊,剩余根管空间AH plus糊剂和热牙胶回填及冠部修复,6个月、1年后临床检查、X线片评估疗效。结果 6个月成功率65.2%,1年成功率是91.3%,根尖周指数有所改善。卡方检验显示两组间统计学有显著性差异。结论 MTA根尖屏障术用于治疗根尖孔未形成的患牙临床疗效可靠。Objective To evaluate the clinical efficacy of mineral trioxide aggregate （MTA） as an apical barrier material when used in teeth with incomplete root formation. Methods Twenty-eight teeth with open apices in 28 patients were treated by standard endo- dontic procedures. An absorbable collagen sponge and MTA apical barrier were placed in the apical portion of the root canal under dent- al operating microscope （DOM） after a calcium hydroxide intracanal dressing had been applied for 1 week. The remainder of canal was back-filled with AH plus sealer thermoplastisized Gutta-Percha 1 day following MTA placement and access cavity was restored with composite resin followed by all crowns. Follow-up evaluations were carried out clinically and radiographically at 6-month and 1-year in- tervals. Results Sixty-five percent of these teeth were successful at 6-month appointment. Ninety-one percent of these teeth were suc- cessful at 1-year appointment. Periapical index scores at 6-month and 1-year recall appointments were improved. Chi-square test indica- ted that successful cases in recall times did significantly influence clinical outcome. Conclusion These results indicate that the mineral trioxide aggregate apical barrier technique is a successful method for treating teeth with immature apices.

关 键 词：无机三氧化聚合物 根尖屏障 根尖孔未形成 

分 类 号：R781.05[医药卫生—口腔医学]