华西口腔医学杂志2013，Vol.31Issue(3)：260-266,7.DOI:10.7518/hxkq.2013.03.011
6～12岁女性儿童下颌位置遗传作用的纵向分析
Longitudinal genetic effects on mandibular position of female twins from six to twelve years old
摘要
Abstract
Objective To find the longitudinal genetic effects on mandibular position in mixed dentition.Methods The sample used in this study consisted of lateral cephalograms of eighty-nine pairs of female twins in Beijing.With a mixed longitudinal method,the effective twins were 183 pairs(monozygous 110 pairs and dizygous 73 ones).The genetic and environmental effects on mandibular position were analyzed by statistical methods in female twins from six to twelve years old.Results Statistical comparisons revealed significant (P＜0.05) environmental effects on the angles (ArGo'Me,SArGo',SN-MP,FH-MP,PP-MP),the depths (L1,L2,L3),and the heights (H1,H3) of mandibular;whilst genetic effects on the angle(NSAr) and the heights(H1,H2,H3,H4)(P＜0.05); and family inheritance effects can be founded in the angles (ArGo ' Me,SN-MP,NSGn,SGn-FH)(P＜0.05).Condusion The effect of inheritance on mandibular position is strong,while environmental impact is relatively weak.Stronger genetic influence on heights is shown than that on depths.The environmental influence on depths and heights is different.Using Ba as a reference,the depth of the chin is the most subjective to environment change,then the mandibular angle,and the condyle is the least.Using N and S as references,the environmental influence on heights showed different order from the most to least changeable:The mandibular angle,the condyle and the chin.In later stage of our observation,the mandibular morphology and growth type might be family inherited.For environmental influences plays important roles on mandibular position,these findings can be used in orthodontic treatment planning.关键词
双生子研究/下颌/头影测量/6～12岁女童Key words
twin study/mandibular/cephalograms/six to twelve years old female分类
医药卫生引用本文复制引用
朱常锋,彭静..6～12岁女性儿童下颌位置遗传作用的纵向分析[J].华西口腔医学杂志,2013,31(3):260-266,7.基金项目
日本文卫省国际科技交流基金资助项目(1994-1996年) （1994-1996年）
武警总医院科研课题基金资助项目(WZ2011025) （WZ2011025）
