下颌骨截骨术相关的骨学测量及临床意义

Mandible osteometry related to mandibtdar osteotomy and its clinical significance

目的 测量与下颌骨截骨术有关的指标和探讨其临床意义,为避免下颌骨截骨术并发症提供形态学资料。方法 100个干燥和10个透明下颌骨,采用人体测量仪,按照人体测量手册所述及的下颌骨测量方法进行测量。结果 下颌体长为(72.0±5,4)mm,下颌体高和厚分别为(27.7±3.3)mm、(15.0±1.7)mm,下颌联合高为(33.4±3.7)mm;下颌支高和最小宽、髁突间宽、下颌角角度、下颌角间宽分别为(61.1±5.7)mm、(32.6±3.2)mm、(120.4±6.6)mm、(124.9±7.5)°、(100.2±6.8)mm;下颌孔上缘至下颌切迹最低点距离、下颌孔后缘至下颌支后缘的宽度、茎乳孔前缘至下颌支后缘的距离和下颌角最突点至下颌管的距离分别为(15.8±2.3)mm、(13.1±1.9)mm、(16.2±1.2)mm和(20.4±3.2)mm。结论 这些数据可作为临床医生施行下颌骨各型截骨术时的参考依据,从而避免其并发症的发生。

Objective To measure bony indices related to mandibular osteotomy and explore their clinical significance, so as to provide morphological data for avoiding the occurrence of complications when osteotomy of mandibular ramus was clinically performed. Methods 100 dry and 10 transplant adult mandibles, which were undamaged on their surfaces, were measured by using the human surveying instrument and referring to surveying methods described by the human surveying handbook. Results The length, height and thickness of the mandibular body, the height of symphysis, the height and the minimum breadth of the mandibular ramus, the bicondylar breadth, the mandibular angle and the bigonial breadth were (72.0±5.4)mm, (27.7±3.3)mm,(15.0±1.7)mm,(33.4±3.7)mm, (61.1±5.7)mm, (32.6±3.2)mm,(120.4±6.6)mm, (124.9±7.5)° and (100.2±6.8)mm respectively; and the distance from the superior margin of the mandibular foramen to the lowest point of the notch, the breadth from the posterior margin of the mandibular foramen to the posterior margin of the ramus, the distance from the anterior margin of stylomastoid foramen to the posterior margin of the mandibular ramus, the distance from the prominent point of the mandibular angle to canal were (15.8±2.3) mm, (13.1±1.9) mm, (16.2±1.2) mm and (20.4±3.2) mm, separately. Conclusion The bony indices not only increase anatomic data, but can provide morphological basis when osteotomy of mandibular ramus was clinically performed.