Relationship between periodontal condition and arterial properties in an adult population in Japan

This study addressed the relationship between periodontal condition and second derivative of the finger photoplethysmogram (SDPTG) in Japanese adults.Subject and methods: The Community Periodontal Index (CPI) and SDPTG were recorded in 415 subjects (mean age: 44.0 years). For assessing SDPTG, we mainly focused on the ratio of the absolute value of the height of the early negative 'b' wave and ratio of the late re-decreasing 'd' wave to the height of the initial positive 'a' wave, namely the b/a and d/a ratios.Results: The CPI score was positively correlated with the b/a ratio (P < 0.001), and negatively correlated with the d/a ratio (P < 0.001). Logistic regression analysis showed that subjects with CPI scores ≥3 were more likely to have a higher level (male >-0.69, female >-0.64) of b/a ratio (Odds ratio = 1.7, P = 0.026) and lower level (male ≤≤-0.29, female ≤-0.32) of d/a ratio (Odds ratio = 2.2, P = 0.001) than those with CPI scores 0-2, after adjusting for age, gender, smoking status, pulse rate and presence of hypertension.Conclusion: There was a statistical association between the CPI scores and SDPTG indices in Japanese adults.