PRF, or platelet-rich fibrin, is a healing material made from your own blood that dentists use to speed up recovery after oral surgery. A small blood sample is drawn chairside, spun in a centrifuge, and the resulting fibrin clot is placed directly into a surgical site. Because it concentrates your body’s natural healing proteins into one spot, PRF can cut early soft tissue healing time significantly, with 75% of studies showing improved healing within the first week compared to letting a wound heal on its own.
How PRF Works
Your blood naturally contains platelets, white blood cells, and proteins that drive tissue repair. PRF captures these components in a dense fibrin mesh, essentially a biological scaffold that sits in your surgical site and slowly dissolves over one to four weeks. As the mesh breaks down, it steadily releases growth factors that trigger specific healing responses: some stimulate new blood vessel formation, others promote cell growth and collagen production, and others help rebuild bone.
This slow, sustained release is what makes PRF useful. Rather than a single burst of healing signals, the fibrin matrix acts like a timed-release system, delivering repair signals to the tissue over days and weeks. The white blood cells trapped in the mesh also contribute antibacterial and anti-inflammatory effects at the wound site.
What Happens During the Procedure
The process is straightforward and happens right in the dental chair. Your dentist or oral surgeon draws a small tube of blood from your arm, similar to a routine blood test. That tube goes into a centrifuge in the office, which spins for about 10 to 12 minutes. The spinning separates your blood into layers: red blood cells settle at the bottom, a golden fibrin clot forms in the middle, and a clear plasma layer sits on top.
The dentist removes the fibrin clot and either places it directly into the surgical site as a plug, presses it into a flat membrane, or mixes it with bone graft material. The entire preparation takes roughly 15 minutes, so it’s done while you’re already being prepped for your procedure. Since PRF comes from your own blood, there’s no risk of allergic reaction or rejection.
Where Dentists Use PRF
PRF shows up most often after tooth extractions. Placing a PRF clot into an empty socket protects the exposed bone, reduces pain, and promotes faster soft tissue closure during that critical first week. For patients who develop dry socket, a painful complication where the blood clot dislodges after an extraction, PRF placed into the socket has shown significant pain reduction by day three and complete soft tissue coverage of exposed bone within two weeks.
Beyond extractions, PRF is widely used in:
- Dental implant placement. PRF helps the bone around a new implant heal and integrate more effectively.
- Bone grafting. When mixed with bone graft particles, PRF acts as a binder and accelerates new bone formation. Studies on bone defects show that adding PRF to graft material increased bone fill to around 63%, compared to roughly 16% with surgery alone.
- Sinus lifts. When the bone beneath your upper sinuses is too thin for implants, PRF promotes bone growth in the augmented area.
- Gum disease treatment. For bone loss caused by periodontal disease, PRF placed into the defect encourages new bone to fill in the damaged area.
Solid PRF vs. Injectable PRF
The original form of PRF produces a solid clot or membrane. Your blood is drawn into a glass tube (the glass surface activates clotting naturally) and spun at moderate speed for 10 to 12 minutes. The result is a firm, rubbery clot that can be shaped, pressed flat, or tucked into a surgical site.
A newer variation called injectable PRF, or i-PRF, uses a slower spin (about 3 to 4 minutes at lower speed) in a non-glass tube. This produces a liquid that stays flowable for about 15 minutes before it naturally clots. Dentists use injectable PRF when they need to mix it into bone graft material, inject it into a specific area, or coat an implant surface. Once placed, the liquid gradually transforms into a solid clot that releases growth factors over 10 to 14 days. Injectable PRF has also shown anti-inflammatory and antimicrobial properties, making it useful for periodontal treatment and even accelerating tooth movement during orthodontic treatment.
How PRF Differs From PRP
You may have heard of PRP, or platelet-rich plasma, which is the older version of this technology. The differences matter. PRP requires two rounds of centrifugation, chemical additives like anticoagulants to keep the blood from clotting during processing, and an activating agent (typically thrombin or calcium chloride) to trigger it at the end. This makes PRP more expensive, more complex to prepare, and introduces chemicals that can interfere with natural wound healing.
PRF simplified the process dramatically. It uses a single centrifugation, no anticoagulants, and no activators. The blood clots on its own during the spin, trapping platelets, white blood cells, and growth factors in a natural fibrin structure. This also means PRF retains white blood cells that PRP protocols often discard, adding immune and antibacterial benefits. Perhaps most importantly, PRF’s fibrin matrix releases growth factors gradually over days to weeks, while PRP delivers its growth factors in a rapid burst that fades quickly.
Who Can Get PRF
Since PRF comes from your own blood, most dental patients are good candidates. There are no compatibility concerns or allergy risks. However, certain medical conditions can affect how well the process works or how safely a blood draw can be performed. Bleeding disorders, severe liver or kidney disease, very low platelet counts, and active chemotherapy treatment all warrant a conversation between your dentist and your physician before proceeding. If you take blood thinners, your dentist will evaluate whether any medication adjustments are needed, always in coordination with the prescribing doctor.
The preparation itself adds minimal time and cost to a dental procedure. There’s no synthetic material to purchase, no donor tissue to source, and no complex lab work. The main requirement is a chairside centrifuge, which is why PRF has become increasingly common in oral surgery and periodontal practices over the past two decades.
What the Healing Looks Like
The most noticeable benefit for patients is during the first week after surgery. Studies consistently show that soft tissue healing at one week is significantly better with PRF than without it. You’re likely to experience less swelling, less pain, and faster closure of the wound. Interestingly, by the two-week mark, most studies find that healing outcomes even out between PRF and non-PRF sites, suggesting that PRF’s greatest value is accelerating early recovery rather than changing the final result.
For bone regeneration, the timeline is longer. New bone formation stimulated by PRF develops over weeks to months, depending on the size of the defect and whether additional graft material was used. Your dentist will typically monitor bone healing with periodic X-rays to confirm that the area is filling in as expected before moving forward with next steps like implant placement.