Hosgor Hatice, Coskunses Fatih Mehmet, Akin Deniz
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey.
Craniomaxillofac Trauma Reconstr. 2021 Jun;14(2):144-149. doi: 10.1177/1943387520952673. Epub 2020 Sep 17.
The aim of this study was to evaluate the prognosis of the teeth in the mandibular fracture line and to analyze the relationship between the degree of displacement of fracture fragments, the relationship of the fracture line to the periodontium, and the relationship between the condition of the teeth at the first postoperative (post-op) year.
A total of 60 teeth from 38 patients (11 female and 27 male) who had erupted teeth in the line of mandibular fracture and were treated with open reduction were examined. The data were collected from the patients' clinical records and radiographs. Age at the time of injury, gender, cause of trauma, site of fracture, the relationship of the fracture line to the periodontium, the degree of displacement of fracture fragments, and the condition of the teeth in the line of the fracture at the first post-op year were evaluated.
The degree of displacement of fracture fragments had an effect on the condition of the teeth at the first post-op year ( = .036) and the regions of the mandible had an effect on the degree of displacement of the fracture fragments ( = .000). The survival rate of the pulp of the teeth was 69.8%.
A preventive approach should be preferred for teeth in the mandibular fracture line. Retained teeth in the fracture line should be monitored clinically and radiologically for at least 1 year, and unnecessary endodontic treatments should be avoided.
本研究旨在评估下颌骨骨折线上牙齿的预后，并分析骨折碎片的移位程度、骨折线与牙周组织的关系以及术后第一年牙齿状况之间的关系。
对38例（11例女性，27例男性）下颌骨骨折线上有萌出牙齿且接受切开复位治疗的患者的60颗牙齿进行检查。数据收集自患者的临床记录和X线片。评估受伤时的年龄、性别、创伤原因、骨折部位、骨折线与牙周组织的关系、骨折碎片的移位程度以及术后第一年骨折线上牙齿的状况。
骨折碎片的移位程度对术后第一年牙齿的状况有影响（P = 0.036），下颌骨区域对骨折碎片的移位程度有影响（P = 0.000）。牙髓的存活率为69.8%。
对于下颌骨骨折线上的牙齿，应优先采取预防性措施。骨折线上保留的牙齿应进行至少1年的临床和影像学监测，避免不必要的牙髓治疗。
