Clinical evaluation of McNamara analysis for orthodontic and orthognathic combined surgical treatment in skeletal class III malocclusion
CHEN Hongyu1, LAI Wenli2
1.Stomatology, Women and Children Hospital of Ningbo, Ningbo 315012, China; 2.Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
CHEN Hongyu,LAI Wenli. Clinical evaluation of McNamara analysis for orthodontic and orthognathic combined surgical treatment in skeletal class III malocclusion[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2022, 52(1): 61-64.
摘要目的：采用McNamara分析法评价成人严重骨性Ⅲ类错𬌗畸形经正畸正颌联合治疗后的效果。方法：选取2012年1月至2015年1月华西口腔医院正畸科需行正畸正颌联合治疗的骨性III类错𬌗畸形患者21例，正颌手术术式均为下颌升支矢状劈开截骨术和上颌Le Fort I型截骨术，治疗前后拍摄头颅侧位X线片，采用McNamara分析法分析测量结果。结果：与治疗前比，治疗后上颌长度、上颌突度增大，下颌长度、下颌凸度、下切牙凸距及下面高减小，差异均有统计学意义（P ＜0.05）。结论：经正畸正颌联合治疗后，严重的骨性畸形在矢状向及垂直向均得到了有效矫正，患者骨面型也有所改善。
Abstract：Objective: To evaluate the effect of McNamara analysis for orthodontic and orthognathic combined surgical treatment in skeletal class III malocclusion on adult patients. Methods: Twenty-one adult patients with skeletal class III malocclusion treated by orthodontic and orthognathic combined surgical treatment were randomly selected. Sagittal split ramus osteotomy and Le Fort I osteotomy were used in all orthognathic surgical treatment. Lateral cephalogram before and after treatment was evaluated through McNamara analysis by t test. Results: Maxillary length and maxillary protrusion increased, but mandibular length, mandibular protrusion,mandibular incisor protrusion and anterior lower facial height decreased after the treatment (P<0.05). Conclusion:After orthodontic and orthognathic combined surgical treatment, serious skeletal class III malocclusion was corrected in sagittal and vertical directions, and patient’s facial form was improved.
