肿瘤切除术后节段性下颌骨缺损的骨内固定及同期不规则三焦点牵张成骨：1例报告
Osteosynthesis and simultaneous irregular trifocal distraction osteogenesis for segmental mandibular defect after tumor ablative surgery: a case report.
作者信息
Hirota Makoto, Chikumaru Hiroshi, Matsui Yoshiro, Adachi Makoto, Aoki Shinjiro, Watanuki Kei, Ozawa Tomomichi, Iwai Toshinori, Tohnai Iwai
机构信息
Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Nov;106(5):651-5. doi: 10.1016/j.tripleo.2008.03.013. Epub 2008 Jul 7.
OBJECTIVE
This paper describes a case of secondary mandibular bone reconstruction performed to place dental implants. Osteosynthesis and simultaneous irregular trifocal distraction osteogenesis were documented.
PATIENT
The patient was a 51-year-old man with recurrent ameloblastoma of the mandible. Segmental mandibulectomy for tumor ablation and immediate mandibular reconstruction were performed. Because the volume of reconstructed bone was insufficient to place dental implants, trifocal distraction osteogenesis (vertical and horizontal distraction osteogenesis) was performed. Because the mandible had lost its continuity, osteosynthesis was performed simultaneously.
RESULTS
Through this procedure, the bone was well augmented. Absorption of the distracted bone was not seen. Adequate-length implants were placed.
CONCLUSION
Irregular trifocal distraction osteogenesis synchronized with osteosynthesis shortened the treatment period and produced stable bone augmentation for placement of dental implants. Therefore, this procedure could be indicated for complicated segmental mandibular bone defects.
目的
本文描述了一例为植入牙种植体而进行的下颌骨二期重建病例。记录了骨固定术及同期不规则三焦点牵张成骨术。
患者
患者为一名51岁男性，患有复发性下颌骨成釉细胞瘤。行节段性下颌骨切除术以切除肿瘤并即刻进行下颌骨重建。由于重建骨的体积不足以植入牙种植体，故进行了三焦点牵张成骨术（垂直和水平牵张成骨）。由于下颌骨失去了连续性，同时进行了骨固定术。
结果
通过该手术，骨得到了良好的增量。未观察到牵张骨的吸收。植入了足够长度的种植体。
结论
与骨固定术同步进行的不规则三焦点牵张成骨缩短了治疗周期，并为牙种植体植入产生了稳定的骨增量。因此，该手术可用于复杂的节段性下颌骨缺损。
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