不同年龄下颌单根管第一前磨牙根管形态的三维分析

发布时间：2018-07-10 09:27

本文选题：下颌第一前磨牙 + 单根管　；参考：《上海交通大学学报(医学版)》2016年10期

【摘要】：目的·观察不同年龄下颌单根管第一前磨牙根管的三维形态。方法·选取15~25岁因正畸需要拔除的下颌单根管第一前磨牙(青年组)和55~75岁因牙周病需拔除的单根下颌第一前磨牙(老年组),每组10颗。利用微型CT扫描获取数据,采用CTAn软件分析牙根体积、根管体积、根管面积以及结构模型系数(SMI)。结果·青年组和老年组根管的平均总体积分别为(12.308±4.550)mm~3和(3.798±0.944)mm~3,根管总面积分别为(48.869±8.064)mm2和(25.187±5.072)mm2,差异均有统计学意义(P0.05)。2组根管下1/3和根管中1/3平均相对体积分数的差异有统计学意义(P0.05)。老年组SMI值显著大于青年组(P0.05)。结论·对不同年龄患者进行根管治疗时,要加强对其根管解剖形态的了解,重视根管预备,提高根管治疗的成功率。
[Abstract]:Objective to observe the three-dimensional morphology of mandibular first premolar canals at different ages. Methods the first mandibular canals premolars (youth group) and single mandibular first premolars (55 75 years old) needed to be removed for orthodontic treatment were selected with 10 teeth in each group. The root volume, root canal area and structural model coefficient (SMI) were analyzed by CTAn software. Results the mean total volume of root canal was (12.308 卤4.550) mm~3 and (3.798 卤0.944) mm ~ (-3) in young group and aged group, respectively, and the total area of root canal was (48.869 卤8.064) mm2 and (25.187 卤5.072) mm ~ (2) respectively. The SMI value in the elderly group was significantly higher than that in the young group (P0.05). Conclusion the anatomic morphology of root canals of patients of different ages should be strengthened, and the preparation of root canals should be paid more attention to, so as to improve the success rate of root canal therapy.
【作者单位】：上海交通大学医学院附属第九人民医院牙体牙髓科上海市口腔医学重点实验室;
【分类号】：R781.05

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