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作者于1994年5～7月在我院对1726名老年前期和老年人全身健康体检中,对牙齿楔状缺损进行调查,现报告如下。 资料和方法 一、调查对象: 武汉市部分离退休干部、教师,年龄在45岁以上,
The author from 1994 to July in our hospital in 1726 elderly and elderly general physical examination, dental wedge defect investigation, are as follows. Data and methods 1. Survey respondents: Some retired cadres and teachers in Wuhan City, aged above 45,