头帽颏兜牵引矫治4～6岁幼儿骨性Ⅲ类错的临床研究  

Study on the Treatment of Skeletal Class Ⅲ Malocclusion with Chincap Appliance in Children at Age of 4-6

作　　者：李朝晖[1] 刘远林[1] 徐盛[1] 

机构地区：[1]广州市花都区胡忠医院口腔正畸科,广东广州510800

出　　处：《广东牙病防治》2010年第3期118-120,共3页Journal of Dental Prevention and Treatment

摘　　要：目的探讨头帽颏兜矫治器矫治4～6岁幼儿骨性Ⅲ类错的效果及其对上下颌骨生长发育的影响。方法骨性Ⅲ类错畸形的4～6岁患儿10例,单纯用头帽颏兜牵引器矫治,对矫治前后头影测量数据进行统计学分析。结果10例患儿矫治后磨牙关系均达到中性关系。同矫治前相比,矫治后SNB变小,差异有统计学意义(t=8.75,P<0.05);SNA(t=-11.33,P<0.05)、ANB(t=-3.86,P<0.05)、SN-MP(t=2.92,P<0.05)、FH-MP(t=2.74,P<0.05)、Y轴角(t=-2.76,P=0.04)、N-Me(t=2.37,P=0.03)、Ptm-A(t=2.51,P=0.02)和Wits值(t=2.54,P=0.02)均明显增大,差异有统计学意义;N-ANS(t=0.74,P=0.48)、Ar-Go(t=1.87,P=0.07)与Go-Po(t=0.35,P=0.73)均有一定程度的增大,但差异无统计学意义。结论头帽颏兜矫治器能使下颌骨向后下旋转,对下颌支、下颌体长度的变化影响不大,能间接促进上颌骨的生长发育。Objective To investigate the possible mechanism of chincap appliance used in the treatment of skeletal class Ⅲ malocclusion in children at age of 4-6.Methods A total of 10 patients at age of 4-6 years with skeletal class Ⅲ malocclusion were treated only with chincap appliance.The effects on the development of maxilla and the mandible bone were determined by cephalometric analysis.Results In 10 patients,the relationship of class Ⅲ malocclusion were corrected to class Ⅰ occlusion after treatment.The mandible bone rotated inferiorly and posterior,the length of the mandible bones were almost the same,but the length of the maxilla bones were bigger.Conclusion The mechanism of chincap appliance used in the treatment of skeletal class Ⅲ malocclusion in children at age of 4-6 is to change the growth direction of mandible and to promote the growth of the maxilla indirectly.

关 键 词：头帽颏兜牵引矫治器 骨性Ⅲ类错 幼儿 头影测量分析 

分 类 号：R783.5[医药卫生—口腔医学]