古城村成人缺牙及龋齿状况纵向观察

A longitudinal study of tooth mortality and dentalcaries in adults of Gucheng village

作者报告了１９８４～１９８９年对京郊古城村成人口腔状况增龄性改变的纵向观察。１９８４年调查了不同年龄组５８７人，１９８９年复查５０７人，复查率为８６．４％。５年内，４０岁以下各年龄组平均每人缺牙０．３～１．８个，而５０岁以上各年龄组缺牙２．８～５．５个，６０岁以上年龄组在５年内４３％以上的原存留牙缺失或变为残根。５年内原健康牙患龋的百分数随年龄增加而明显上升，６０岁以上年龄组１０％健康牙变为龋齿。５年内各年龄组５０％以上原龋齿加重，而６０岁以上年龄组原龋齿９０％以上都有不同程度的发展。本研究表明，老年人的口腔保健应引起高度重视。

AbstractIn order to observe the Age Related changes indental health conditions, we selected Gucheng vil-lage , a rural area of Beijing as a surveillance place forour longitudinal study.575 persons in different age groups were exam-ined in 1984 and 507 persons were reexamined in1989. The rate of reexamination was 86. 4%.During the 5 year period , 0.3～1. 8 teeth weremissing in 20～40 years old groups and 2. 8～5. 5teeth were missing in 50～70 years old groups. Be-yond 60 years old groups more than 43% original re-maining teeth were missing or present as residualroots.More than 10% original healthy teeth were de-cayed and more than 90% original caries teeth becameaggravated in elderly group within 5 years.This study indicates that the incidences of toothmortality and dental caries are much higher in eldersthan in young adults.