›› 2017, Vol. 37 ›› Issue (10): 918-921.

• 临床研究 • 上一篇    下一篇

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

郭世梁,万方,杨卫东   

  1. 南京大学医学院附属口腔医院 南京市口腔医院
  • 收稿日期:2017-03-17 修回日期:2017-05-25 出版日期:2017-10-28 发布日期:2017-10-13
  • 通讯作者: 杨卫东 E-mail:ywdong2001@163.com
  • 基金资助:
    新型根管治疗技术在上颌磨牙根管治疗中的应用研究;常温流动牙胶充填系统的基础及临床研究

A Clinical Evaluation of MTA Barrier for Root-end Closure of Open Apex Teeth in Patients

  • Received:2017-03-17 Revised:2017-05-25 Online:2017-10-28 Published:2017-10-13

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天后复诊,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个月时间组的成功率65.2%,1年时间组的成功率是91.3%,PAI值有所改善。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。

关键词: 无机三氧化聚合物, 根尖屏障, 根尖孔未形成

Abstract: Objective The purpose of this investigation to evaluate the clinical efficacy of mineral trioxide aggregate (MTA) as an apical barrier materital when used in teeh with incomplete root formation. Methods Twenty eight teeth with open apices in 28 patients were treated by standard endodontic procedures. An absorbable collagen sponge and MTA apical barrier were placed in the apical portion of the root canal under dental 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 1d following MTA placement and access cavity was restored with composite resin followed by all crown. Follow-up evaluations were carried out clinically and radiographically at 6-month and 1-year intervals. Results Sixty-five percent of these teeth were successful at 6-month appointment. Ninety-one percent of these teeth were successful at 1-year appointment. Periapical index scores at 6-month and 1-year recall appointments were improved. Chi-square test indicated that successful cases in recall times did significantly influence clinical outcome. Conclusions These results indicated that the mineral trioxide aggregate apical barrier technique is a successful method for treating teeth with immature apices.

Key words: Mineral trioxide aggregate, Apical barrier, open apices