Methods: 11 smoking patients , 1 female and 10 male, 33-66 years of age (test group), and 11 non-smoking patients, 3 female and 8 male, 39-69 years of age (control group),who had been referred to the Ohu University dental hospital were included in the study. All subjects were clinically examined for probing pocket depths (PPD), clinical attachment levels (CAL), bleeding on probing scores (BOP), and plaque scores (PCR) at baseline examinations. Only sites with probing depth of 4mm or more were included in the analysis. Following the examination, all patients were given a detailed case presentation, which included oral hygiene instruction and received cause-related periodontal therapy. After the treatment, all subjects were participated in a recall system, at regular intervals of 1-3 months. Re-examinations including assessment of the same parameters as those studied at baseline were performed after 2 years. Clinical parameters during the treatment period were investigated for their association with % sites with probing attachment loss „d2mm over the 2-year period for each group of patients. The data were evaluated using the Spearman rank correlation.
Results: In test group, little or weak relationships were observed for all clinical parameters. On the other hand, % sites with CAL„d5mm at baseline showed significant correlation with probing attachment loss (correlation coefficients:0. 70, p<0.05) in control group.
Conclusion: Only limited association was observed for all clinical parameters with % sites with probing attachment loss „d2mm in smokers, while significant relationship was seen for % sites with baseline clinical attachment levels „d5mm in non-smoking patients.