A “tooth graft” typically refers to one of two dental procedures: a bone graft that rebuilds jawbone lost after tooth extraction or disease, or a gum graft that covers exposed tooth roots where gum tissue has receded. Both involve transplanting tissue to a damaged area of the mouth so it can heal and regenerate. Which one you need depends on whether the problem is bone loss beneath the surface or gum tissue pulling away from your teeth.
Bone Grafts vs. Gum Grafts
These two procedures solve different problems, though they sometimes go hand in hand. A dental bone graft adds volume to your jawbone when it has thinned or deteriorated. This most often happens after a tooth is pulled, because the jaw rapidly resorbs bone in the empty socket, losing significant volume within the first six months. Bone grafts are also used to repair damage from advanced gum disease or injury. Without enough bone, a dental implant has nothing solid to anchor into.
A gum graft, on the other hand, addresses soft tissue. When gums recede and expose the roots of your teeth, those roots become vulnerable to decay, sensitivity, and further bone loss. A periodontist takes a small piece of tissue (usually from the roof of your mouth) and attaches it over the exposed area to rebuild the gum line. It’s one of the most common periodontal procedures in the U.S., with success rates above 90%.
Why Bone Grafts Are Needed
The most common reason for a bone graft is to prepare for a dental implant. Implants are titanium posts screwed into the jawbone, and they need a certain thickness and density of bone to hold. If you had a tooth extracted months or years ago, there’s a good chance the bone in that spot has already shrunk. Periodontal disease can also eat away at bone over time, as can injuries to the face or jaw.
Even if you’re getting a tooth pulled today with plans for an implant later, your dentist may recommend grafting the socket right away to prevent that natural bone loss from happening in the first place. This preventive approach, called socket preservation, is the simplest type of bone graft and gives you the best foundation for a future implant.
Types of Bone Graft Procedures
There are three main bone graft procedures, each designed for a different situation.
Socket preservation is performed immediately after a tooth is extracted. The dentist places bone graft material directly into the empty socket, covers it with a barrier membrane, and sutures it closed. This prevents the jaw from narrowing and losing shape during healing.
Ridge augmentation rebuilds a section of jawbone that has already thinned. This is the procedure you’d need if significant time has passed since a tooth was lost and the bone has already deteriorated.
Sinus lift is specific to the upper jaw near the back teeth. When the bone between your jaw and sinus cavity is too thin for implants, a surgeon makes a small opening in the bone, gently pushes the sinus membrane upward, and packs bone graft material into the space created underneath. After several months of healing, that material integrates with your natural bone and can support an implant.
Where the Graft Material Comes From
Graft material falls into four categories. An autograft uses your own bone, harvested from another site in your body (often the chin, hip, or another area of the jaw). This is considered the gold standard because the living bone cells encourage faster integration, but it does mean a second surgical site.
An allograft uses processed bone from a human donor, obtained through a tissue bank and sterilized for safety. A xenograft uses processed animal bone, typically from bovine or porcine sources. Both of these act as scaffolding that your body gradually replaces with its own bone. Synthetic materials, called alloplasts, can also mimic bone and stimulate new growth without any human or animal tissue at all.
Your surgeon will recommend a material based on the size and location of the graft, your health history, and whether you’ll eventually be getting an implant.
What Recovery Looks Like
For bone grafts, expect swelling and discomfort in the first week or two. Your jaw will feel stiff, and opening your mouth fully may be difficult for several days. You’ll start on a soft or liquid diet: think mashed potatoes, pureed soups, yogurt, smoothies, porridge, and fish in sauce. Eating small, frequent meals works better than three large ones. A small plastic spoon and a sports bottle with a spout can make the first few days easier.
Good nutrition actually matters for healing. Try to blend or mash nutrient-dense foods rather than just drinking water-based broths, since diluting everything with water lowers the nutritional value. Soft fruits, custard, rice pudding, and pureed vegetables are all good options during that first week.
The full healing timeline for a bone graft depends on the procedure. Socket preservation grafts heal relatively quickly, while sinus lifts and ridge augmentations can take several months before the new bone is solid enough for implant placement. Your dentist will monitor the site and let you know when you’re ready for the next step.
Gum graft recovery is faster, typically one to two weeks. You’ll have soreness at both the graft site and the roof of your mouth (if that’s where the tissue was taken from), but most people return to normal eating within a couple of weeks.
Success Rates and What Can Go Wrong
Bone grafts are highly reliable. A large-scale study found that dental implants placed in bone-grafted sites had a clinical success rate of 97.8%, which was statistically comparable to implants placed in natural bone. Success rates for the graft itself can reach close to 100% depending on the type of graft and the patient’s health.
When bone grafts do fail, about 70% of failures happen within the first year, suggesting the new bone didn’t properly integrate. Failure is more common in the upper jaw than the lower, particularly in the back molar area (3.4% failure rate) and the front incisor area (3.1%). Smoking is one of the biggest controllable risk factors. Waiting for the graft to fully heal before placing an implant also improves outcomes: implants placed immediately in grafted sites fail at roughly 3.1%, compared to about 2.1% when placement is delayed.
Signs that a bone graft isn’t healing properly include pain or swelling that gets worse after the first week, pus or drainage from the site, gum recession around the area, or no visible improvement in bone volume over time.
For gum grafts, the main concern is the tissue losing blood supply. A white patch of tissue pulling away from the tooth is the clearest sign of graft failure. Infection, excessive bleeding, and fever above 101°F are also reasons to contact your surgeon promptly.
How the Gum Graft Procedure Works
Gum graft surgery is typically performed by a periodontist under local anesthesia. The surgeon makes a small incision at the recession site and creates a flap in the gums, then thoroughly cleans the exposed tooth roots. A second incision on the roof of your mouth provides a small wedge of inner tissue, which is positioned over the exposed roots and sutured into place. In some cases, substitute graft material from a tissue bank is used instead, which eliminates the need for a donor site on your palate.
A single graft usually takes about an hour. If you need grafts in multiple areas, the procedure takes longer, and your surgeon may recommend staging them across separate appointments.