青少年生长发育期正常前牙颜色的变化趋势

目的分析上海地区青少年生长发育期间正常前牙颜色的变化趋势。方法选取100名均龄13.2岁的儿童及100名均龄为23.4岁的青少年,分别代表颌面部生长发育高峰的起始与结束年龄。采用日本Shofu公司的Shade-eye自动比配色仪,对2组对象的左上中切牙进行颜色测量和分析。结果从生长发育高峰起始到结束,前牙颜色特性变化趋势如下:(1)色相从以红色为主调向以红色与灰色并存变化(P<0.01);(2)明度存在由明向暗变化(P<0.01);(3)饱和度由浅向深变化(P<0.01);结论在人类生长发育阶段,牙色随年龄而改变,呈一定变化规律,即色相由红到灰、明度由明到暗、饱和度由浅变深的变化趋势。

The Fluctuation of Anterior Teeth Colouration during the Period of Growth Puberty in Children and Adolescents

Objective This study was designed to examine the fluctuation tendency of the anterior teeth coloration during the period of growth puberty.Methods One hundred children with average age of13.3years,and100adolescents with average age of23.4years were divided into two groups.The upper left incisors were selected for color matching using computerized spectrophotometery system(Shade-eye,Shofu).The measurements depicting color properties,including hue,value and chroma were quantitatively analyzed.Statistical evaluation was conducted for the comparison of the color measurements between the two groups.Results The following trends were indicated during the period of growth puberty:(1)The hue of the coloration changed from redness into mixture of redness and grayness.(2)The magnitude of value of the coloration was in decline.(3)The intensity of chroma increased significantly.Conclusions The teeth coloration fluctuates within the period spanning the initial and final stages of growth puberty,characterized by a decrease in hue and value and an increase in chroma.