Motivational Interview and Orthodontic Patients

A parallel-group randomized clinical trial was conducted with 45 patients of the Orthodontic Clinic of Universidad Iberoamericana\'s (UNIBE) Postgraduate Unit. The study hypothesis was that motivational interview plus oral hygiene instructions would be more effective in maintaining long-term oral hygiene in comparison with conventional oral hygiene instructions alone. A computer-generated list of numbers created with Statistical Package for the Social Sciences (SPSS) V21.0 was used to random allocate participants into the experimental or the control group. Monthly oral hygiene instructions and a G.U.M. kit were given to the sample. Additionally, the experimental group received motivational interviewing sessions by a trained periodontist. Simplified Oral Hygiene Index, Gingival Index, Periodontal Probing Depth and Bleeding on Probing were recorded at baseline, three and six months after the beginning of the study. Repeated-measures analysis of variance and chi-squared test were conducted.