骨支持式数字化导板在牙颌面畸形治疗中的应用

Application of bone-supported digital guide plate in the treatment of dental and maxillofacial deformities

目的探讨骨支持式数字化导板在牙颌面畸形治疗中的应用价值,以指导临床治疗方案优化。方法回顾性分析2016年1月~2019年8月在大连市口腔医院应用骨支持式数字化导板进行正颌手术治疗的63例牙颌面畸形患者临床资料,纳入观察组;另选取同期采用传统咬合导板进行正颌手术治疗的63例牙颌面畸形患者临床资料,纳入对照组。比较两组的手术时间、术中出血量、上颌骨误差、住院时间,比较两组术前及术后3个月时咬合功能(正中紧咬时颞肌、咬肌、二腹肌不对称指数)。结果观察组的术中出血量少于对照组,手术时间、住院时间短于对照组,上颌骨误差小于对照组,差异有统计学意义(P<0.05);术后3个月,两组的颞肌、咬肌、二腹肌不对称指数均低于术前,且观察组低于对照组,差异有统计学意义(P<0.05)。结论骨支持数字化导板在牙颌面畸形治疗中的应用效果较好,可降低术中出血量,缩小上颌骨误差,减小患者3对肌束的不对称指数,促进咬合功能恢复。

Objective To explore the application value of bone-supported digital guides in the treatment of dental and maxillofacial deformities to guide the optimization of clinical treatment plans.Methods A retrospective analysis of the clinical data of 63 patients with dental and maxillofacial deformities who used bone-supported digital guides for orthognathic surgery in our hospital from January 2016 to August 2019 were included in the observation group,and the traditional occlusal guides were selected for the same period The clinical data of 63 patients with dental and maxillofacial deformity who underwent orthognathic surgery were included in the control group.The operation time,intraoperative blood loss,maxillary error,and hospitalization time were compared between the two groups.The occlusal function(temporal muscle,masseter muscle,and digastric muscle asymmetry index during median bite)was compared before and 3 months after operation.Results The intraoperative blood loss of the observation group was less than that of the control group.The operation time,maxillary error,and hospitalization time of the observation group were all less than those of the control group,the differences were statistically significant(P<0.05).Three months after the surgery,masseter muscle and digastric muscle asymmetry index were lower than before operation,and masseter muscle and digastric muscle asymmetry index of the observation group were lower than those of the control group,the differences were statistically significant(P<0.05).Conclusion Bone support digital guide plate is effective in the treatment of dental and maxillofacial deformities.It can reduce intraoperative blood loss,reduce maxillary error,reduce the asymmetry index of the patient's 3 pairs of muscle bundles,and promote the recovery of occlusal function.