Platelet-rich fibrin and piezoelectric surgery: a safe technique for the prevention of periodontal complications in third molar surgery.

Purpose: The surgical removal of impacted mesioangular mandibular third molars (3Ms) may produce trauma to the soft tissues and bony structures. In particular, healing of postextractive socket may cause periodontal defects at the distal root of the second molar. The aim of the present prospective study was to assess the outcomes of a surgical protocol to remove 3Ms including the use of ultrasound bone surgery devices and platelet-rich fibrin (PRF) as a grafting material.
Patients and Methods: Twenty-eight impacted mandibular 3Ms were removed. Fourteen 3Ms were removed by piezoelectric osteotomy and PRF application. Instead, the 14 3Ms of the control group were removed by piezoelectric osteotomy but without PRF application. Probing depth in the distal position for all the mandibular second molars was registered before and 6 months after surgery.
Results: No complications were encountered. In the study group, alveolar socket fulfillment was rated as sufficient in 4 cases and adequate in the remaining 10 cases, whereas in the control group, it was rated as insufficient in 3 cases, sufficient in 4 cases, and adequate in 7 cases. Mean preoperative periodontal probing in the control group was 3.78 mm, whereas in the study group, it was 3.93 mm.Six months after surgery, mean periodontal probing was 3.28 mm in the control group and 3.07 mm in the study group.
Conclusions: Combined action of PRF and piezoelectric surgery can be considered a safe and fine technique for third molar surgery and alveolar socket healing.