下颌第一磨牙根管系统临床研究

目的观察下颌第一磨牙根管系统,以期为临床治疗中避免下颌第一磨牙根管的遗漏及侧穿提供指导。方法选取需做根管治疗的下颌第一磨牙300例,采用根管口探针和小号锉探查根管,并与X线技术相结合以确定下颌第一磨牙根管的数目及形态。结果 300例下颌第一磨牙中,含3个根管的185例,4个根管106例,5个根管7例,C形根管2例。结论下颌第一磨牙近远中第三根管的出现增加了临床治疗中遗漏根管的机率,C形根管的出现增加了治疗难度,因此掌握被治疗牙齿的根管数目及其变异对于根管治疗的成功非常重要。

The mandibular first molar canal system clinical research

Objective Observe the mandibular first molar canal system, so as to provide guidance to a- void the mandibular first molar root canal omissions and side wear in the clinical treatment. Methods The need to do a root canal of 300 patients with mandibular first molar, the root canal mouth probe and small file de- tection root canal, and combined with X-ray technology to make sure the number of the first molar mandible root canal and its form. Results In the 300 eases of mandibular first molar, including three root canal in 185 ea- ses, four root canal in 106 eases, five root canal in 7 cases, C form root canal in 2 cases. Conclusion The presence of a third root canal of the mesial or distal of the mandibular first molar increases the probability of missing the root canal in the clinical treatment, C form of root canal presence increases the difficulty of treat- ment, so it is very important to master the root canal number and variations of the teeth treated to the success of root canal therapy.