Epidemiological Study of Periodontal Disease and Periodontal Preventive Program.

本研究的目的是根据牙周病的流行病学情况，制定牙周病的预防计划。方法和结果如下：1.流行病学研究：老年组牙周状况比青年组差。大部分探袋深度（PD）和附着水平（AL）在3年内无变化。但基线时深囊袋大于4mm的AL比浅囊袋小于4mm的AL显示更多的附着丧失。口腔健康状况：老年组牙齿数量少，喜食甜食。口腔健康状况与生活方式、吸烟、一般健康状况及居住地有关。3.牙周病的预防：预防教育。影响口腔健康。尤其是3次教育效果明显优于1次，对引导患者对牙周病的认识有重要意义。

The purpose of this study was to frame a periodontal preventive plan on epidemiological situation.This study consisted of 3sub-studies. The methods and results were followings.1.Epidemiological study : old age group was worse than young age group on periodontal status. Most of probing pocket depth(PD)and attchment level(AL)showed any change for 3 years. But AL with deep pocket over 4mm at baseline showed more attachment loss than AL with shallow pocket less than 4mm. There were site specificity and individual specificity.2.Dental Health Situation : Old age group did not have many teeth when who was prefer to eat sweet food. Oral health situation related to life-style, smoking general health condition and place of residence.3.Prevention of Periodontal Disease : Preventive education. effected oral health. Especially 3 times education is most effective than 1 time on group oral health education And, it was very important to lead the patient to a better understanding of one's periodontal disease.