Number of patients included per city and dental service
After 6 months, 330 teeth (90%) were re-evaluated (RC – 159; HT – 171). After 1 year, 292 teeth (80%) were re-evaluated (RC – 146; HT – 146). In total, 358 teeth were evaluated at least once during the study. We found no difference between the groups in the number of participants analyzed at the beginning and the end of the trial (p=0.880). 
