Abstract: Abstract： Objective To investigate and analyze the periodontal health conditions in the adult population of Shanghai.Methods By using community periodontal index (CPI)，a total of 763 subjects aged from 20 to 65 were recruited and accepted periodontal examination with the data analyzed by SPSS 17.0 software package．Results In the 763 people,the percentage of healthy，bleeding，shallow pocket and deep pocket were respectively 2.1%，41.94%，23.72 %，12.58%．The proportion of people who had periodontal pockets among the 20-35 year-old group was lower than that of the 36-50 year-old group and the 51-65 year-old group,respectively(P＜0.05).The proportion of healthy gingiva among males was significantly lower than that among females,yet the proportion of deep periodontal pock among males was higher than that among females(P＜0.05).Conclusions The adult periodontal conditions of Shanghai are serious and it is related to age and gender．

Key words: Periodontal health status, CPI, Age, gender