title: Relationship between periodontal condition and arterial properties in an adult population in Japan.
abstract: Oral Diseases (2010) 16, 781-787 OBJECTIVE:  This study addressed the relationship between periodontal condition and second derivative of the finger photoplethysmogram (SDPTG) in Japanese adults.
  
  
  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.
  
  
  CONCLUSIONS
  There was a statistical association between the CPI scores and SDPTG indices in Japanese adults.
authors.affiliation: Department of Preventive Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Furuta
authors.forename: T
authors.initials: T
authors.lastname: Tomofuji
authors.forename: D
authors.initials: D
authors.lastname: Ekuni
authors.forename: N
authors.initials: N
authors.lastname: Tamaki
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.forename: T
authors.initials: T
authors.lastname: Azuma
authors.forename: K
authors.initials: K
authors.lastname: Irie
authors.forename: Y
authors.initials: Y
authors.lastname: Endo
authors.forename: S
authors.initials: S
authors.lastname: Yamada
authors.forename: M
authors.initials: M
authors.lastname: Morita
mesh_terms: D000328:Adult; D000367:Age Factors; D001158:Arteries / Q000502:physiology*; D001810:Blood Volume / Q000502:physiology; D003430:Cross-Sectional Studies; D003728:Dental Calculus / Q000145:classification; D005260:Female; D005385:Fingers / Q000098:blood supply; D005884:Gingival Hemorrhage / Q000145:classification; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D006973:Hypertension / Q000503:physiopathology; D007564:Japan; D008297:Male; D008875:Middle Aged; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000145:classification; D017156:Photoplethysmography / Q000379:methods*; D011673:Pulsatile Flow / Q000502:physiology; D011674:Pulse; D012737:Sex Factors; D012907:Smoking; D055815:Young Adult