华西口腔医学杂志2012，Vol.30Issue(2)：179-182,4.DOI:10.3969/j.issn.1000-1182.2012.02.017
锥形束CT在下颌第一磨牙桩道制备中的应用研究
Application research of cone beam CT in dowel preparation for the mandibular first molar
张江山 1李雪燕 2章燕珍3
作者信息
- 1. 上虞市第二人民医院 口腔科,上虞312365
- 2. 杭州市口腔医院 特需科,杭州310014
- 3. 浙江大学医学院附属第二医院 口腔矫形科,杭州310009
- 折叠
摘要
Abstract
Objective To measure the root anatomic topography of mandibular first molar using cone beam CT (CBCT), calculate the proper space for dowel preparation. Methods The roots of 121 mandibular first molars from 71 patients were scanned by CBCT, the images from cross section, sagittal plane, and coronal plane were got respectively. The dowel preparation spaces according to established three dimensional images and dowel preparation requirements were analyzed. Results Three dowels could be prepared. The dowel length for distal-root was (7.19±0.91) mm, dowel diameter was (0.80±0.12) mm on the level of 4 mm above root apex. The dowel length for mesio-root was (6.92± 1.02) mm, and dowel diameter was (0.71±0.08) mm on the lever of 4 mm above root apex for buccal side and (0.71± 0.07) mm for lingual side. Dowel should be prepared cone-shaped. Conclusion Many factors affect dowel preparation, individualized design is needed. CBCT can provide reliable radiographic evidence.关键词
锥形束CT/下颌第一磨牙/桩道Key words
cone beam CT/mandibular first molar/dowel分类
医药卫生引用本文复制引用
张江山,李雪燕,章燕珍..锥形束CT在下颌第一磨牙桩道制备中的应用研究[J].华西口腔医学杂志,2012,30(2):179-182,4.
