【摘要】 目的　研究下颌第三磨牙与下颌角区骨折的关系。方法　收集华西医科大学口腔医学院 1986～ 1995年间下颌骨骨折的住院病历及全景片 ,记录下颌第三磨牙与下颌角区骨折的情况 ,并测量下颌第三磨牙的角度和阻生程度 ,应用统计学方法处理数据。结果　有下颌第三磨牙发生下颌角区骨折是没有下颌第三磨牙发生下颌角区骨折的 3.86倍 ,而且下颌第三磨牙角度越小、阻生程度越大 ,越易发生角区骨折。结论　下颌第三磨牙是下颌角区骨折的危险因素。更多还原

【Abstract】 Objective To study the relationship between mandibular third molars and mandibular angle fractures. Method The medical records and panoramic radiographs of a patient cohor with mandible fracture which come from the College of Stomatology of West China University of Medical Science between 1986 and 1995 were retrospectively reviewed. Datas were collected for the number and location of mandible fracture, the angulation and impacted degree of the lower third molar were also measureed. These datas were processed by Spass statistical software. Results The presence of the lower third molars are 3.86 times more likely to have mandibular angle fracture than patients without mandibular third molars. The smaller angulation, the more impacted and the frequent of mandibular angle fracture is higher. Conclusion Mandibular third molars are a risk factor for mandibular angle fractures.更多还原