PERIODONTAL HEALTH COMPARED IN CHAMFER AND BIOLOGICALLY ORIENTED PREPARATION TECHNIQUE APPLIED TO AESTHETIC RESTORATION: PROSPECTIVE CLINICAL STUDY AT ONE-YEAR FOLLOW-UP

The aim of this study was to compare prosthetic tooth preparation performed using the Chamfer and the Biologically Oriented Preparation Technique (B.O.P.T.) to analyze which of them performs better in maintaining the long-term health and trophism of the periodontal supporting tissues. From January 2020 to January 2022, patients requiring fixed tooth-supported rehabilitation in anterior regions were randomly selected for this clinical study, performed at the Department of Dentistry at San Raffaele Hospital, Milan, Italy. The sample was randomly divided into two categories: Group 1 (Chamfer preparation); Group 2 (B.O.P.T. preparation). Clinical periodontal measurements were taken to assess the health status of marginal tissues at time zero, i.e., at the time of preparation, at the time of provisional prostheses, and 12 months after time zero (after definitive prostheses had been fitted). Following the inclusion and exclusion criteria, eight patients were recruited, four of whom were treated with the Chamfer technique (Group 1) and the same number with B.O.P.T. (Group 2). Within the limitations of this study, based on the results obtained evaluating 12 months, it was concluded that no technique is significantly better and more predictable than the other about periodontal health status.