A brief motivational interviewing as an adjunct to periodontal therapy-A potential tool to reduce relapse in oral hygiene behaviours. A three-year study.

Love the length of this study compared to others (3 years vs 6 months or less). I think it makes sense that one motivational interviewing session was not sufficient to show differences to control groups at 3 years, but both groups were relatively healthy (which is what we want anyways!).

https://www.ncbi.nlm.nih.gov/pubmed/28836375