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为了掌握北京市城区中学生牙周疾病患病情况，探讨牙周疾病综合防治措施，根据卫生部、国家教委发布的《全国学生常见病综合防治方案》及北京市卫生局、北京市教委26号对关于进一步做好学生常见病防治工作的通知》精神，我们于1999年3月对北京市城区中学进行了牙周疾病患病情况
In order to understand the prevalence of periodontal diseases in middle school students in Beijing, we explored measures for comprehensive prevention and treatment of periodontal disease, according to the “National Comprehensive Prevention and Treatment Plan for Common Diseases for Students” issued by the Ministry of Health and the State Education Commission, and the Beijing Municipal Bureau of Health and Beijing Education Commission No. 26 Regarding the spirit of the “Notice of Further Preventing the Common Diseases of Students”, we conducted a periodontal disease prevalence in the middle schools in Beijing City in March 1999.