Subhashraj Krishnaraj
Department of Oral and Maxillofacial Surgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
J Oral Maxillofac Surg. 2009 May;67(5):968-72. doi: 10.1016/j.joms.2008.09.005.
This study evaluated the relationship between the status and position of mandibular third molars and angle fractures.
In a total of 2,033 patients with a mandibular fracture, 532 (26%) had angle fractures, and 1,466 (72%) had retained their lower third molars. The most frequent cause for mandibular fracture was road traffic accident (64%), followed by assault (19%).
Of 341 patients with an unerupted third molar, mandibular angle fracture was evident in 249 patients (73%). Only 62 patients (9.4%) with a completely erupted third molar had angle fractures, whereas 83 patients (17.6%) with partially erupted third molars had angle fractures.
Our study confirmed an increased risk of angle fractures in the presence of a lower third molar, as well as a variable risk for angle fracture, depending on the third molar's position.
本研究评估下颌第三磨牙的状态和位置与角部骨折之间的关系。
在总共2033例下颌骨骨折患者中，532例（26%）发生角部骨折，1466例（72%）保留了下颌第三磨牙。下颌骨骨折最常见的原因是道路交通事故（64%），其次是袭击（19%）。
在341例未萌出第三磨牙的患者中，249例（73%）出现明显的下颌角骨折。只有62例（9.4%）完全萌出第三磨牙的患者发生角部骨折，而83例（17.6%）部分萌出第三磨牙的患者发生角部骨折。
我们的研究证实，存在下颌第三磨牙时角部骨折的风险增加，并且根据第三磨牙的位置，角部骨折的风险存在差异。
