Bleeding on probing as it relates to smoking status in patients enrolled in supportive periodontal therapy for at least 5 years

Ramseier, Christoph Andreas; Mirra, Damiano; Schütz, Christian; Sculean, Anton; Lang, Niklaus Peter; Walter, Clemens; Salvi, Giovanni Edoardo (2015). Bleeding on probing as it relates to smoking status in patients enrolled in supportive periodontal therapy for at least 5 years. Journal of clinical periodontology, 42(2), pp. 150-159. Wiley 10.1111/jcpe.12344

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AIM

To relate the mean percentage of bleeding on probing (BOP) to smoking status in patients enrolled in supportive periodontal therapy (SPT).

MATERIALS AND METHODS

Retrospective data on BOP from 8'741 SPT visits were related to smoking status among categories of both periodontal disease severity and progression (instability) in patients undergoing dental hygiene treatment at the Medi School of Dental Hygiene (MSDH), Bern, Switzerland 1985-2011.

RESULTS

A total of 445 patients were identified with 27.2% (n = 121) being smokers, 27.6% (n = 123) former smokers and 45.2% (n = 201) non-smokers. Mean BOP statistically significantly increased with disease severity (p = 0.0001) and periodontal instability (p = 0.0115) irrespective of the smoking status. Periodontally stable smokers (n = 30) categorized with advanced periodontal disease demonstrated a mean BOP of 16.2% compared to unstable smokers (n = 15) with a mean BOP of 22.4% (p = 0.0291). Assessments of BOP in relation to the percentage of sites with periodontal probing depths (PPD) ≥ 4 mm at patient-level yielded a statistically significantly decreased proportion of BOP in smokers compared to non-smokers and former smokers (p = 0.0137).

CONCLUSIONS

Irrespective of the smoking status, increased mean BOP in SPT patients relates to disease severity and periodontal instability while smokers demonstrate lower mean BOP concomitantly with an increased prevalence of residual PPDs.

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