Periodontal disease and coronary heart disease: a reappraisal of the exposure.
BACKGROUND
Results from studies relating periodontal disease to cardiovascular disease have been mixed. Residual confounding by smoking and use of clinical measures of periodontal disease rather than measures of infection have been 2 major criticisms. The aims of this study were to investigate relationships between prevalent coronary heart disease (CHD) and 2 exposures, (1) clinical periodontal disease and (2) IgG antibodies to 17 oral organisms, and to evaluate the role of smoking in these relationships.


RESULTS
Our study is based on a subset of participants in the Atherosclerosis Risk in Communities (ARIC) Study, who received a complete periodontal examination during visit 4 (1996-1998). The exposures were periodontal status and serum IgG antibody levels against 17 periodontal organisms, and the outcome was prevalent CHD at visit 4. Multivariable analyses indicate that periodontal status is not significantly associated with CHD in either ever smokers or never smokers. Similar analyses evaluating antibodies indicate that high antibodies (above the median) to Treponema denticola (odds ratio [OR]=1.7; 95% CI, 1.2 to 2.3), Prevotella intermedia (OR=1.5; 95% CI, 1.1 to 2.0), Capnocytophaga ochracea (OR=1.5; 95% CI, 1.1 to 2.1), and Veillonella parvula (OR=1.7; 95% CI, 1.2 to 2.3) are significantly associated with CHD among ever smokers, whereas Prevotella nigrescens (OR=1.7; 95% CI, 1.1 to 2.6), Actinobacillus actinomycetemcomitans (OR=1.7; 95% CI, 1.2 to 2.7), and Capnocytophaga ochracea (OR=2.0; 95% CI, 1.3 to 3.0) were associated with CHD among never smokers.


CONCLUSIONS
Clinical signs of periodontal disease were not associated with CHD, whereas systemic antibody response was associated with CHD in ever smokers and never smokers. These findings indicate that the quality and quantity of the host response to oral bacteria may be an exposure more relevant to systemic atherothrombotic coronary events than clinical measures.
Beck
James D
JD
Department of Dental Ecology, University of North Carolina, Chapel Hill, NC 27599, USA. James_Beck@unc.edu
Eke
Paul
P
Heiss
Gerardo
G
Madianos
Phoebus
P
Couper
David
D
Lin
Dongming
D
Moss
Kevin
K
Elter
John
J
Offenbacher
Steven
S
D000907:Antibodies, Bacterial / Q000097:blood*; D000917:Antibody Formation / Q000502:physiology*; D003327:Coronary Disease / Q000453:epidemiology / Q000209:etiology* / Q000276:immunology; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010510:Periodontal Diseases / Q000150:complications* / Q000453:epidemiology; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects
D000907:Antibodies, Bacterial; D007074:Immunoglobulin G