摘要：

颌面部骨的化脓性炎症、外伤、肿瘤等会造成下颌骨不同程度的节段性缺损，破坏下颌骨的连续性及口颌系统功能平衡。本文报告1例下颌骨节段性缺损患者，因术后反复感染需拆除原固定钛板，基于患者术前口扫数据，采用数字化设计制作翼状导板，以维持术后下颌骨位置及咬合关系稳定，为后续下颌骨修复重建创造条件。

关键词: 下颌骨节段性缺损, 翼状导板, 数字化

Abstract:

Suppurative infection, trauma, and tumors in the maxillofacial region may cause segmental mandibular defects, resulting in loss of mandibular continuity and functional imbalance of the stomatognathic system. This report describes a case of a patient with a mandibular segmental defect who required removal of the original fixation titanium plate because of repeated postoperative infections. Based on preoperative intraoral scan data, a digitally designed and fabricated guiding flange prosthesis was used to maintain the postoperative mandibular position and occlusal relationship, providing favorable conditions for subsequent mandibular reconstruction.

Key words: mandibular segmental defect, guiding flange prosthesis, digitalization