文章基本信息

标题：Relationship between mandible fractures and third molars
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作者：Yunhae Lee ; Jeenam Kim ; Myungchul Lee 等
期刊名称：Archives of Craniofacial Surgery
印刷版ISSN：2287-1152
出版年度：2019
卷号：20
期号：6
页码：376-381
DOI：10.7181/acfs.2019.00493
出版社：KoreaMed Synapse
摘要：BACKGROUND :This study was conducted to determine the relationship between third molar (M3) and mandibular fracture. METHODS :Patients with unilateral mandibular angle or condyle fractures between 2008 and 2018 were evaluated retrospectively. Medical records were reviewed regarding the location of fractures, and panoramic radiographs were reviewed to discern the presence and position of ipsilateral mandibular third molars (M3). We measured the bony area of the mandibular angle (area A) and the bony area occupied by the M3 (area B) to calculate the true mandibular angle bony area ratio (area A-B/area A× 100). RESULTS :The study consisted of 129 patients, of which 60 (46.5%) had angle fractures and 69 (53.5%) had condyle fractures. The risk of angle fracture was higher in the presence of M3 (odds ratio [OR], 2.2; p< 0.05) and the risk of condyle fracture was lower in the presence of M3 (OR, 0.45; p< 0.05), than in the absence of M3. The risk of angle fracture was higher in the presence of an impacted M3 (OR, 0.3; p< 0.001) and the risk of condyle fracture was lower in the presence of an impacted M3 (OR, 3.32; p< 0.001), than in the presence of a fully erupted M3. True mandibular angle bony area ratio was significantly lower in the angle fractures than in the condyle fractures (p= 0.003). CONCLUSION :Angle fractures had significantly lower true mandibular angle bony area ratios than condyle fractures. True mandibular angle bony area ratio, a simple and inexpensive method, could be an option to predict the mandibular fracture patterns.
关键词：Impacted tooth;Mandibular fracture;Third molar