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目的探讨上颌第一磨牙根管解剖因素对根管治疗难度的影响。方法对87颗上颌第一磨牙进行根管治疗难度评估,观察其解剖因素对根管治疗难度的影响。结果 87颗上颌第一磨牙根管治疗难度34.48%为Ⅰ级,63.22%为Ⅱ级,2.30%为Ⅲ级。根管治疗难度与根管的数目、形态、长度、弯曲度、钙化度存在明显的相关性(P<0.05)。结论上颌第一磨牙根管治疗难度较大。根管弯曲度过大、根管钙化明显、MB2根管存在及根管长度异常等解剖因素使根管治疗难度明显增加。
Objective To investigate the effect of root canal anatomy on maxillary first molar root canal therapy. Methods Eighty-seven maxillary first molars were evaluated for the difficulty of root canal therapy and the effect of anatomic factors on the difficulty of root canal therapy. Results 87 cases of maxillary first molar root canal therapy 34.48% of the difficulty level Ⅰ, 63.22% Ⅱ, 2.30% Ⅲ. There was a significant correlation between the difficulty of root canal treatment and the number of root canal, shape, length, curvature and calcification (P <0.05). Conclusion The maxillary first molar root canal treatment is more difficult. Root canal bending is too large, obvious root canal calcification, MB2 root canal exists and the root canal length and other anatomical factors that make root canal treatment more difficult.