PRF for socket preservation: what the new histology and systematic review mean for your chair
A small randomized trial shows L‑PRF increases early new bone and vascularity in sockets, but recent systematic reviews still call the evidence heterogeneous — use PRF as a low‑cost adjunct, not a universal substitute for grafting in higher‑risk sockets.
A 2026 randomized clinical trial that biopsied sockets at implant placement compared alveolar ridge preservation (ARP) using leukocyte‑ and platelet‑rich fibrin (L‑PRF) versus an allograft plus collagen membrane in 26 single‑rooted extraction sites. After 12 weeks the L‑PRF group showed a higher proportion of cases with more than 50% new bone (53.8% versus 30.8%; p=0.033) and more frequent histologic markers of active remodelling and vascularity (for example, blood vessels present in 84.6% versus 38.5%; p=0.016). The authors interpreted these results as evidence of accelerated healing and improved bone quality, while stressing the trial was exploratory because of its small sample and limited power. ([revistas.usp.br](
Clinical takeaways
- PRF/L‑PRF can speed early socket healing and increase vascularity — expect better histologic bone quality at ~12 weeks, not guaranteed larger ridge volume.
- Use PRF as an adjunct (to cover a graft or as an internal scaffold) in sites where you need biology cheaply; avoid relying on PRF alone for large buccal defects or high‑aesthetic anterior sockets.
- Standardize your PRF technique (centrifuge speed, tube type, membrane handling) and schedule implant assessment with CBCT at 10–14 weeks rather than assuming immediate graft equivalence.
Sources
- Histological findings in post-extraction sockets after alveolar ridge preservation with leukocyte- and platelet-rich fibrin: a randomized clinical trial. Journal of Applied Oral Science (2026). DOI: 10.1590/1678-7765-2026-0283
- Effectiveness of platelet-rich fibrin concentrates in alveolar ridge preservation after tooth extraction: A systematic review of randomized clinical trials with tomographic evaluation. Clinics (Sao Paulo) (2026). DOI: 10.1016/j.clinsp.2026.101172
- The efficacy of platelet-rich fibrin in alveolar ridge preservation: a systematic review and meta-analysis of randomized controlled trials. Frontiers in Medicine (2026). DOI: 10.3389/fmed.2026.1753189
- Tomographic and histomorphometric evaluation of socket healing after tooth extraction using leukocyte- and platelet-rich fibrin: A randomized, single-blind, controlled clinical trial. Journal of Cranio-Maxillo-Facial Surgery (2020). DOI: 10.1016/j.jcms.2019.11.006