摘要
目的分析下颌第二磨牙根管治疗过程中C形根管的解剖特征及治疗方法。方法选择因牙髓病或根尖周病初次就诊、需做根管治疗的下颌第二磨牙100例,通过拍摄术前X线片和术中根管探查,按照Melton标准诊断C形根管;记录根管数目、形态和类型,最后以手用ProTaper镍钛锉预备根管。结果下颌第二磨牙C形根管的发现率为28.57%(32/112),81%的C形根管患牙X线片表现为锥形融合牙根,19%表现为近远中独立牙根;所有患牙均无根管内并发症发生,治疗效果理想。结论下颌第二磨牙C形根管主要存在于融合牙根,根管探查结合X线片可诊断C形根管;EDTA配合ProTaper手用镍钛器械进行根管预备,次氯酸钠冲洗可获得良好的治疗效果。
Objective To analyze anatomical characteristics and therapeutic methods of C-shaped root canals in the root canal treatment of mandibular second molars. Methods The 100 mandibular second molars due to pulposis or periapical disease for root canal therapy in first-time consuhancy were selected. The C-shaped root canals were diagnosed by preoperative X-ray films and intraoperative canal exploration based on the criteria of Melton. The root canals were shaped by band-manipulated Ni-Ti ProTaper before recording their amount, shape, and type. Results The inci- dence of C-shaped canals in mandibular second molars was 28.57%（32/112）. According to X-ray films, 81% teeth with C-shaped canals had conical fusion roots, and 19% of C-shaped canal teeth revealed the distinct mesial and distal roots. There was no any complication in all cases. The therapeutic effect was favorable. Conclusion The C-shaped canal system in mandibular second molars mainly displays in a fused root, which can be diagnosed by X-ray films and canal exploration. The therapy of root canals shaped by ethylene diamine tetraacetic acid （EDTA） combining with hand-manipulated Ni-Ti instrument ProTaper and cleaned by sodium hypochlorite can obtain a good therapeutic effect.
出处
《中国当代医药》
2013年第14期182-183,共2页
China Modern Medicine
关键词
下颌磨牙
C形根管
根管治疗
分析
Mandibular molar
C-shaped root canal
Root canal therapy
Analysis
