口腔颌面外科杂志Issue(2)：123-126,4.DOI:10.3969/j.issn.1005-4979.2014.02.008
下颌骨颏孔区CBCT分析
CBCT Study on the Position of the Mental Foramen of the Mandible
摘要
Abstract
Objective: To measure and evaluate the morphologic character of mandible alveolar bone in mental foramen area. Methods:150 patients' bilateral 300 CBCT images of mental foramen area were subjected in this study. Tomography was carried out using Planmeca ProMax 3D volume scanner. The heights of alveolar bone in mental foramen area were measured along an axial plane from a CBCT image. The digits were analyzed by using group t test with SPSS 16.0 software package. Results: In the buccal aspect, average distance from the mental foramen to the alveolar crest was 11.87 mm. The average distance from the upper roof of mental canal in the same axial plane to the alveolar crest was 16.45 mm. The difference was 4.58 mm. At the level of 2 mm below the upper margin of the mental foreman, the average width from the mental canal to the lingual margin is 11.53 mm. Conclusion: The distance from the buccal margin of mental foramen to the alveolar crest measured by CBCT images showed differences as compared with the two-dimensional X-ray (such as oral panoramic) measurement. The mean difference was 4.58mm. The implant treatment design in this area should not be based on the panoramic measurement, but on the basis of CBCT examination. The so-called " 2 mm safe distance" from the tip of implant to the mental foreman based on panoramic should be re-evaluated.关键词
下颌骨/颏孔/锥形束CTKey words
mandible/mental foramen/cone-beam computed tomography(CBCT)分类
医药卫生引用本文复制引用
张军岐,王青,陈凤山..下颌骨颏孔区CBCT分析[J].口腔颌面外科杂志,2014,(2):123-126,4.基金项目
国家自然科学基金面上项目 （）
