影响双颌前突青少年患者唇部内收因素的研究  

Variables involved in lip retraction in bimaxillary protrusive adolescents

作　　者：黄一平[1] 李巍然[1] 

机构地区：[1]北京大学口腔医学院·口腔医院正畸科,100081

出　　处：《中华口腔正畸学杂志》2014年第4期190-194,共5页Chinese Journal of Orthodontics

摘　　要：目的 探讨影响双颌前突青少年患者正畸治疗后唇部内收的因素.方法 对满足纳入标准的37例双颌前突青少年患者进行治疗前后的X线头影测量分析.测量治疗前软组织、硬组织、牙体组织项目及治疗后软硬组织变化项目共27项,应用多元线性回归（后退法）筛选影响唇部变化的敏感因素.结果 治疗后上中切牙颈缘点矢状向变化,治疗前年龄,上唇缘点至E线距离和颏部厚度影响上唇缘点矢状向内收变化,回归方程相关系数为0.875;治疗后下中切牙切缘矢状向变化,治疗前下唇缘点至E线距离,下唇紧张度,颏唇角和颏部厚度影响下唇缘点矢状向变化,回归方程相关系数为0.887.结论 治疗前生长潜力、骨性、牙性、软组织特点,及治疗后牙性变化影响双颌前突患者唇部内收变化.Objective To investigate the variables involved in lip retraction in bimaxillary protrusive adolescents.Methods Pre and post-treatment cephalographs of 37 bimaxillary protrusive adolescents were evaluated.Twenty-seven linear and angular measurements were constructed to indicate the pre-treatment conditions and the post-treatment changes of hard and soft tissues.Stepwise multiple linear regression was used to screen variables which could affect the lip retractions.Results Stepwise multiple linear regression showed that the sagittal upper lip change could be affected by the sagittal change of the maxillary central incisor cervical point,initial distance from upper lip to E-line,chin thickness and grow potential with a 87.5 percent contribution ratio; and sagittal lower lip change was affected by the sagittal change of mandibular incisor tip position,initial distance from lower lip to E-line,lower lip taper,mentolabial angle and chin thickness with a 88.7 percent contribution ratio.Conclusions The pre-treatment hard and soft tissue variables,growth potential and the retraction of anterior teeth could affect lip retraction in bimaxillary protrusion adolescents.

关 键 词：双颌前突 唇部内收 头影测量分析 

分 类 号：R783.5[医药卫生—口腔医学]