Association between cigarette smoking and the intraoral distribution of periodontal disease in Thai men over 50 years of age.

Aim: This study aimed to investigate the effects of cigarette smoking on periodontal conditions in specific tooth regions of older Thai men.

Methods: There were 272 current smokers, 714 former smokers, and 477 non-smokers enrolled in the present study. Differences between groups in the mean probing depth or attachment loss were compared using ancova.