Anterior open bite: surgically or orthodontically treated

目的探讨前牙开畸形正畸治疗与外科治疗的界限.方法选择正畸治疗开患者7 0人,平均年龄18.0岁;外科治疗开患者14人,平均年龄25.1岁.对经计算机头影测量得出的154项颅面软硬组织测量项目值进行单因素和多因素判别分析.结果下切牙下颌平面角(L1MP)可作为单因素判别指标,当其值≤89.5°时,可判断为外科治疗的适应证,》89.5°时则判断为正畸治疗.根据多因素逐步判别分析建立的判别函数: Z=-0.80188 L1MP+0.91401 Age+0.671111 Antigonial notch-MP+0.599992 SNPg, 当Z≥0时,判定为外科治疗组,Z《0 时判为正畸治疗组. 结论单因素判别指标和多因素判别函数均可用于确定正畸治疗与外科治疗的界限,判别函数优于单因素判别指标.To study the boundary between orthodontic and surgical treatment in correction of anterior open bite.70 cases (18.0 ages in average) treated orthodontically and 14 cases (25.1 ages in average) treated surgically were chosen. 154 hard and soft tissue measurements were analyzed by statistical software.A diagnostic index, L1MP, was gained with simple factorial analysis. L1MP </= 89.5 was bound to be treated with surgery. A discriminate function, Z = -0.80188 L1MP + 0.91401 Age + 0.671111 Antigonial notch-MP + 0.599992 SNPg, was produced by multiple factorial discriminate analysis. Z < O is an indication of orthodontic treatment.The diagnostic index and discriminate function were both useful in determining which method to be chosen in treatment of anterior open bite. The discriminate function was tested to be more efficient than the diagnostic index.卫生部科研项目PubMed中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)02139-1413