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在1985年初,我们普查了大连医学院在校学生625名的龋齿、牙龈炎及口腔卫生习惯。选择典型病例与健康对照组,做唾液成分分析,以了解其间关系。调查对象的年龄范围是16～24岁,在早晨刚起床时收集无刺激全唾液10分钟,判断流速后立即测PH,再以3000转/分速
In early 1985, we censored 625 dental caries, gingivitis and oral hygiene practices among students in Dalian Medical College. Select typical cases and healthy control group, do saliva composition analysis to understand the relationship between. Subjects were aged 16 to 24 years old, just getting up in the morning to collect non-stimulated whole saliva 10 minutes to determine the flow rate measured immediately after PH, and then to 3000 rev / min