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目的:研究汉族正常人群下颌后牙区解剖结构 ,为颌面外科手术提供测量方法和量化指标。 方法 :6 0例汉族健康成年人拍摄曲面断层片 ,分别在曲面断层片上测量颏孔、颏孔远中 1、2、3cm处管嵴距、下颌骨高度及下颌角角度 ,然后对测得的数据作统计处理。 结果:健康成年人下颌骨管嵴距在颏孔远中 1cm处最大 ,男性为(2 3.78± 2 .30 ) m m,女性为 (2 2 .4 4± 2 .0 7) m m。颌骨高度在颏孔处最大 ,男性为 (37.94± 2 .30 ) m m,女性为 (34.76± 2 .87) m m。下颌角角度男性为 118.10°± 7.78°,女性为 12 6 .2 0°± 4 .5 6°。结论 :曲面断层片可以为颌面外科手术提供量化数据
Objective: To study the anatomic structure of mandibular posterior teeth in normal Han population and to provide a measurement method and quantification index for maxillofacial surgery. Methods: Twenty-four healthy adults in Han nationality were photographed with curved sections. The mental foramina were measured on the curved section of the foramen, and the distance between the crest of the mental foramina, the mandibular height and the mandibular angle was measured at 1, Data for statistical processing. RESULTS: The maxillary ridge distance of mandibular canal in healthy adults was the largest at 1cm distal to the mental foramen, with (2. 3.78 ± 2.30) m m in male and (22.4 ± 2.07) m m in female. The maxilla height was the largest at the mental foramen, with a mean of (37.94 ± 2.30) m m for men and (34.76 ± 2.87) m m for women. Mandibular angle was 118.10 ° ± 7.78 ° for men and 12.6 ° ± 0 ° ± 4.56 ° for females. Conclusions: Curved tomographic slices provide quantitative data for maxillofacial surgery