Effect of Injectable Platelet Rich Fibrin (i-PRF) on Extraction Socket Healing: A Split-Mouth Randomized Study.

Surgical extraction of lower third molars (LTMs) is the most commonly performed procedure in oral and maxillofacial surgery (OMFS). Healing of the extraction socket is a key outcome in oral surgery, as complications in healing may lead to delayed recovery, persistent pain, infection, and adverse events such as dry socket. The aim of this study is to compare extraction socket healing (SH) following surgical extraction of LTMs with and without the application of injectable platelet rich fibrine (i-PRF). For this purpose minimum 32 participants from both sexes will be included to the study. For each participant, one LTM (right or left) will be randomly assigned to the control group and the contralateral tooth to the test group. In the control group, the extraction socket will be irrigated with 0.9% physiological saline solution following standard extraction, whereas in the test group, the socket will be irrigated with i-PRF. SH will be assessed on postoperative days 3 and 14, and at 6 weeks, using the Inflammatory Proliferative Remodeling (IPR) scale and the hydrogen peroxide (H₂O₂) test. Gingival recession and the depth of the periodontal pocket at the distal aspect of the adjacent second molar will be recorded on postoperative days 7 and 14. The outcomes will be compared between the two sides with respect to wound healing.