广东牙病防治Issue(6)：306-310,5.
基于锥形束 CT 的上颌前牙区解剖形态学研究
Anatomical morphology of maxillary anterior teeth--a study using cone beam computed tomography
摘要
Abstract
Objective To analyze the anatomical structure of maxillary anterior teeth and to offer classification for the teeth by using cone beam computed tomography ( CBCT) , providing the data for formulating treatment plan before imme-diateimplantationinaestheticzone.Methods 100patients,including600maxillaryanteriorteeth,wererecruited.The thickness at 6 positions of labial and palatal bone wall was measured.The classifications were established based on the position and angulation of the teeth.Results There were 85.5% of anterior teeth belong to type Ⅰ, 5.2% belong to typeⅡ, and 9.3%belong to typeⅢ.The proportion of facial bone wall thickness <1 mm at P1(4 mm apical to the CEJ) and P2 (mid-root) was 78.3%, at P3 (apex) was 19.8%.Palatal bone wall thickness showed an increasing phe-nomenon from the crest to the apex, and a mean thickness of (8.06 ±2.40) mm at P6 (apex).The axial angles between the tooth and its relative alveolar process were categorized into three styles.Style A occupied 11%.While style B occu-pied 52%, 30.0%of which with undercut at the apical facial bone wall.Style C occupied 37%, 77% of which were deeper undercut.Conclusion Mostly, the facial bone wall of maxillary anterior teeth was thin (<1 mm), only 10.8%of the angular was less than 10°.According to the difficulty of achieving good results , all cases were categorized as levels 1to 3 and their recommendations were given.关键词
锥形束CT/即刻种植/骨壁/牙根Key words
Cone beam CT/Immediate implantation/Alveolar wall/Root分类
口腔医学引用本文复制引用
刘慧凤,黄盛兴,石磊,马丽辉..基于锥形束 CT 的上颌前牙区解剖形态学研究[J].广东牙病防治,2015,(6):306-310,5.基金项目
深圳市科技研发资金项目 （）
