中国汉族正常[牙合]人群GALL线与眉间点矢状向关系的研究

The relationship between GALL Line and glabella in sagittal direction of Han Chinese with individual normal occlusion

目的 根据Andrews六要素中的要素二,探索中国汉族正常[牙合]人群GALL （GoalAnterior Limit Line,CALL）线与眉间点矢状向之间的位置关系,寻找出具有“中国特色”的、容易确定的GALL线.方法 选取中国汉族个别正常[牙合]150例（女性74例,男生76例）,年龄18～30岁,对所有研究对象拍摄在自然头位下的头颅侧位片和侧面像,运用NemoCeph NX软件侧位片和侧面像重叠,测量GALL线的位置,使用SPSS19.0统计软件分析,得出中国汉族正常[牙合]人群GALL线与眉间点矢状向位置关系.结果 男女分组中,男性组前额坡度偏大男性为（20.0±5.1）°,女性为（18.5±6.1）°,但是前额坡度没有显著性差异（P＞0.05）;前额中心点与眉间点间的距离在男女间有显著性差异;大部分人群的GALL线通过眉间点男性为93.5％,女性为95.9％.结论 中国汉族正常[牙合]人群GALL线在矢状向上大部分是通过眉间点的.

Objective To explore the sagittal relationship between GALL （Goal Anterior Limit Line,CALL） line and glabella in Han Chinese adults by referring to Element Ⅱ of Andrews＇ six elements of facial harmony,and to find out a way to verify the modified GALL line for Han Chinese.Methods 150 adults of Han Chinese Han with individual normal occlusion,74 female and 76 male,ages from 18 to 30 were selected.All subjects took their lateral photographs and cephalograms under NHP （natural head posture）.The two kinds of images were overlapped by NemoCeph NX software,and the sagittal relationship between GALL line and glabella were analyzed by SPSS19.0.Results The average slope of the forehead in male group （20.0 ± 5.1） was larger than that in female group （18.5±6.1）,but the two groups showed no statistical difference（P〉0.05）.The distances between the FFA （forehead facial axis） point and glabella was significantly different between the two groups.In both groups,the GALL line mostly pass through glabella （93.5% in male group,and 95.9% in female group）.Conclusions The GALL line pass through the glabella in most of the Han Chinese population with individual normal occlusion.