Kawasaki Goro, Imayama Naomi, Yoshitomi Izumi, Furukawa Kohei, Umeda Masahiro
Department of Clinical Oral Oncology, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
Department of Clinical Oral Oncology, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
In Vivo. 2019 Jan-Feb;33(1):191-194. doi: 10.21873/invivo.11458.
BACKGROUND/AIM: Postresective mandibular reconstruction is common in cases of oral and mandibular tumors. However, complications such as plate fracture and/or plate exposure can occur. The purpose of this study was to analyze complications and survival of reconstructive plates used to correct mandibular defects caused by oral cancer.
Clinical and radiological data from 34 patients were analyzed. Only discontinuous mandibular defect cases were included in this study. All cases were classified using the Hashikawa's CAT and Eichner's classification methods. Then, we determined whether these classifications and clinical treatment methods were significantly related to complications.
Complications after mandibular reconstruction occurred in 10 of 34 patients, specifically, two plate fractures, one screw fracture, and seven plate exposures occurred. The plate fractures occurred 5 and 6 months after operation, and the screw fracture occurred 39 months after operation. Using the Hashikawa's CAT classification, the two cases of plate fracture were one of AT type and the other of T type, and the screw fracture was AT type. Using Eichner's classification, all three cases of plate and screw fractures were B2 type.
We suggest that plate and screw fractures were caused by the type of mandibular defect and bite force.
背景/目的：下颌骨切除术后重建在口腔及下颌骨肿瘤病例中很常见。然而，可能会出现钢板断裂和/或钢板外露等并发症。本研究的目的是分析用于矫正口腔癌所致下颌骨缺损的重建钢板的并发症及生存率。
分析了34例患者的临床和放射学数据。本研究仅纳入下颌骨连续性中断缺损病例。所有病例均采用桥川氏CAT分类法和艾希纳分类法进行分类。然后，我们确定这些分类和临床治疗方法是否与并发症显著相关。
34例患者中有10例在下颌骨重建后出现并发症，具体为2例钢板断裂、1例螺钉断裂和7例钢板外露。钢板断裂分别发生在术后5个月和6个月，螺钉断裂发生在术后39个月。采用桥川氏CAT分类法，2例钢板断裂病例中1例为AT型，另1例为T型；螺钉断裂为AT型。采用艾希纳分类法，钢板和螺钉断裂的3例病例均为B2型。
我们认为钢板和螺钉断裂是由下颌骨缺损类型和咬合力引起的。
