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报告1116例幼儿和学龄前儿童（2～7岁）口部11项指标的活体测量均数、性差及年龄发育特点。发现各项指标测量均数在多数年龄段均为男大于女，但仅口裂宽的8个年龄段这种差异具显著意义（p＜0．05）。5条生长曲线随年龄增大上升缓慢，数值随年龄变化较小；6条曲线随年龄增大上升较明显．并有1至2个生长高峰，数值随年龄增长变化较大，提示临床应考虑年龄因素，注意年度增长率。9项指标男女性的生长曲线出现1至3次交叉，表明在交叉的年龄段女性生长略决于男性。
Reported 1116 children and preschool children (2 to 7 years old) mouth 11 indicators of life measurement mean, poor sex and age development characteristics. It was found that the mean of all measures was significantly higher in men than in women in most age groups, but only in 8 age groups with wide mouth fissures (p <0.05). The growth curve of five growth curves increased slowly with age, and the values of the five curves changed little with age. The six curves increased significantly with age. And there are 1 to 2 growth peak, the value changes with age, suggesting that clinical factors should be considered, pay attention to the annual growth rate. The 9-item growth curve for men and women showed one to three crosses, indicating that female growth was slightly more pronounced in men at the crossover age.