Benefits of fibre retention osseous resective surgery in the treatment of shallow infrabony defects: a double-blind, randomized, clinical trial describing clinical, radiographic and patient-reported outcomes.

Background: The aim of this randomized clinical trial was to evaluate the efficacy of Apically Positioned Flap with Fibre Retention Osseous Resective Surgery (FibReORS) or Osseous Resective Surgery (ORS) to treat periodontal pockets associated with infrabony defect ≤3 mm at posterior natural teeth.

Material And Methods: Thirty patients with chronic periodontitis showing persistent periodontal pockets after cause-related therapy were enrolled; 15 patients were randomly assigned to FibReORS (test group) and 15 to ORS (control group). Measurements were performed by a blind and calibrated examiner.