Evaluation of the efficacy of injectable platelet‐rich fibrin versus platelet‐rich plasma in the regeneration of traumatized necrotic immature maxillary anterior teeth: A randomized clinical trial

Background/Aim This study aimed at comparing the regenerative potential of injectable platelet‐rich fibrin (i‐PRF) (Group 1) and platelet‐rich plasma (Group 2) scaffolds. Materials and methods Twenty‐three patients, aged from 9 to 24 years, having 24 immature traumatized necrotic maxillary anterior teeth, were enrolled. Teeth trauma was confirmed by patients' history. Preoperative three‐dimensional scans were done. In the first visit, canals were irrigated with 1.5% sodium hypochlorite then medicated with calcium hydroxide. After 2 weeks, patients were randomly assigned into one of the treatment groups (n = 12). The platelet concentrate was applied after centrifuging 10 mL of autologous venous blood with respect to the centrifugation protocol for each platelet concentrate. Patients were recalled at 6 and 12 months posttreatment, during which clinical and radiographic examinations and assessment of pulp sensitivity were done. Three‐dimensional scanning was done after 12 months. The increase in root length and decrease in root canal diameters were calculated at three canal levels. Statistical analysis was done using the paired t‐test and the independent t‐test. The significance level was set at p