Clinical Effect Evaluation of Concentrated Growth Factor in Endodontic Microsurgery: A Cross-Sectional Study

Concentrated growth factor (CGF) is the third-generation platelet concentrate product. This study aimed to evaluate whether the use of CGF during endodontic microsurgery had a positive influence on surgical outcomes.Fifty-four patients who underwent endodontic microsurgery from January 2017 to November 2021 were enrolled. They were assigned to the CGF and the control groups according to whether CGF was used during the surgery and followed up at 6, 12, and 18 months after surgery. Preoperative classification of the cases and follow-up radiographic outcomes were based on Kim's classification and Molven's criteria, respectively, and evaluated by 2 calibrated endodontists. The Student t test and χ2 test were used to assess the baseline of 2 groups. Rank sum test was used to determine whether CGF had an impact on the surgical outcome.Thirty-one patients (41 periapical lesion sites) were included in the CGF group, and 23 patients (26 periapical lesion sites) were included in the control group. The overall success rate of endodontic microsurgery was greater than 90%. The baseline of the 2 groups had no difference (P < .05). In the CGF group, the success rate was always 100% in 3 follow-ups, whereas the success rate was 84.2%, 92.8%, and 90%, respectively, in the control group. The success rate between the CGF group and the control group was statistically significant in all 3 follow-up points (P < .05).The application of CGF during endodontic microsurgery might have a positive influence on surgical outcomes, thus, its prognosis. However, higher-grade evidence is needed to demonstrate its role.