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作者对8～10岁学龄儿童咬合力进行测定,同时采用光密度测定法,测定了下颌骨骨盐含量。男、女儿童各24名,下颌磨牙部均无龋齿和实质性缺损。结果表明,8,9和10岁咬合力(kg),男孩分别为23.63±3.74,29.25±4.63和32.63±5.19,女孩分别为24.75±4.68,26.38±5.19和32.38±6.22,男女间无明显差异,但高年龄组小儿咬合力明显高于低年龄组小儿。8,9和10岁下颌骨骨盐含量(mmA1),男孩分别为
The authors measured the bite force of school-age children aged 8 to 10 years and determined the content of bone mineral in the mandible by optical densitometry. Twenty-four male and female children each had no dental caries and substantial defects in the molars. The results showed that the bite forces (kg) at 8, 9 and 10 years old were 23.63 ± 3.74,29.25 ± 4.63 and 32.63 ± 5.19 respectively for boys and 24.75 ± 4.68, 26.38 ± 5.19 and 32.38 ± 6.22 for girls respectively, with no significant difference between men and women , But the bite force of children in high age group was significantly higher than that of children in lower age group. Mandibular bone mineral content of 8, 9 and 10 years old (mmA1), respectively, for boys