Survival of Single Implant-supported Restorations Placed Distal to Residual Dentitions and Followed up for at Least One Year

The purpose of this retrospective study utilising a chart review was to determine the survival of single implant-supported restorations in distal end partially edentulous arches and identify factors associated with biological and mechanical complications of those restorations. A total of 132 participants (M = 66.8 years) from the University of Toronto Faculty of Dentistry clinics were included. Follow-up ranged from 7 to 119 months (M = 58.2 month). Out of 149 implants, seven (4.7%) failed during the follow-up period. No predictors of biological complications were statistically significant. However, light occlusion was associated with significantly fewer mechanical complications compared to evenly distributed occlusion. In this study, light occlusion associated with fewer chipped restorations, fewer loosened screws/crowns, and fewer fractured crowns. These findings suggest that implant-supported single restorations have high survival rates over a mean follow-up for five years.M.Sc