Relation between caries experience and periodontal status

Abstract

We conducted a cross-sectional study to determine if dental caries experience is a risk indicator for periodontal disease. The subjects were 27, 683 adults who received an oral examinations after the Kobe earthquake in 1995. The results showed that in every age groups, the percentage of teeth with Community Periodontal Index (CPI) 0 code were significantly in the following order : decayed teeth (DT)<filled teeth (FT)<sound teeth. On the contrary, the percentage of teeth with CPI 3 or 4 code were significantly in the following order : sound teeth<filled teeth (FT)<decayed teeth (DT). On the other hand, there was correlation between CPI code and DMFT. In each DMFT component, DT increased with the increase of CPI code especially in 20-29 age group, while FT didn't change with increase of CPI code. With stepwise logistic regression analysis of CPI code 3 or 4 in 20-29 age group, DT indicated the highest odds ratio in the independent variables (DT, MT, FT and gender). The results showed a strong correlation between DT and periodontal health, especially in the 20-29 age group. This indicates that DT can be used as a risk indicator for periodontal disease.