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通过问卷和口腔检查，成都市区小学一至五年级学生的牙菌斑指数与年级的升高呈负相关．牙软垢指数随年级的变化趋势不明显；各年级学生的口腔卫生质量欠佳。牙菌斑指数良好和一般者仅占22．87％．而较差和极差者高达77．13％；牙软垢指数良好和一般者仅占23．75％，而较差和极差者高达76．25％。各项指标中，仅女生的牙软垢指数的均值较男生为高．提示女生的口腔卫生状况较男生为好，说明牙软垢指数较能全面反映口腔卫生状况。口腔卫生的重点在于加强右侧牙、磨牙、舌面的刷牙质量。
Through questionnaires and oral examinations, the dental plaque index of grade one to grade five students in primary school in Chengdu was negatively correlated with the grade. Tooth decay index with the grade of the trend is not obvious; grade oral hygiene poor quality. The plaque index was good and average only accounted for 22.87%. While the poor and the worst were as high as 77.13%. The toothpaste index was good and the average was only 23.75%, while the poor and the worst were 76.25%. Among the indicators, the average value of only female students' molar lesion index was higher than that of boys. Prompted girls oral health status is better than boys, indicating that the molar index can more fully reflect the oral health status. The focus of oral hygiene is to strengthen the right side of the teeth, molars, tongue brushing teeth quality.