JScholar Publishers One Abutment-One Time” Technique: Crestal Bone Loss In Immediate Pro- visionalization

Aims: purpose of this study is to evaluate crestal bone reabsorption through prosthetic rehabilitation of mono or bi-edentulism in aesthetical sectors using non post-extractive implants with “one abutment – one time” method. Methods: 24 patients have been selected and randomized in two groups: PA group: 12 patients rehabilitated using provisional abutments and DA group: 12 patients rehabilitated using definitive abutments through “One abutment – one time” technique. Results: comparison between our study and those of literature confirm that if implant-abutment unit is not altered or modified through time, marginal bone loss can be reduced during the first months after surgery. Conclusions: within the limits of this study, non removable abutments positioned during surgery resulted in 0.47 mm of marginal bone reduction.