Background Dentists may take part in smoking cessation counseling of dental patients by using the time they are engaged in dental procedures and by emphasizing on oral manifestations of smoking. The present study aimed to evaluate the effects of smoking cessation counseling by a dentist on preparation for change to quit smoking in smoker patients. Methods This study was performed on 150 smoking patients admitted to Dental School of Shahid Beheshti University of Medical sciences, Tehran, Iran. The patients were randomly divided into two groups of 75 patients. The intervention group received smoking cessation counseling by a single senior dental student. A self-administered questionnaire containing questions regarding the position of the individual in change cycle stages was completed by both intervention and control group at baseline and at one-month follow up. For statistical analysis, paired t-tests, Mann-Whitney U and multivariate linear regression models was used with a significance level of P<0.05. Results At baseline, there were no significant differences between the intervention and control groups in terms of change cycle stages of smoking cessation. Also, there was no significant difference between change cycle stages at baseline and one-month follow up in control group; but this difference in intervention group was significant (p=0.006). The proportion of patients in the pre-contemplation stage decreased by 43% while the proportion of patients in the contemplation and action stages increased by 20% and 16% respectively. Conclusions The smoking cessation counseling enhances forward movement through the stages-of-change of smoking cessation. Measurement of this movement may be an important intermediary in evaluating small clinical trials of counseling.
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