What Is a Dental Bone Graft?
A dental bone graft is a surgical procedure that places bone or bone-like material into the jaw to restore volume and density where bone has been lost. The grafted material acts as a framework that encourages your body to produce new bone cells. Over time, the graft is gradually replaced by your own natural bone through a process called remodeling.
Bone loss in the jaw is more common than most people realize. When a tooth is extracted or lost, the bone that once supported it begins to shrink. This process, called resorption, can reduce bone volume by 25% or more within the first year after tooth loss. Advanced periodontal disease also destroys bone around the teeth. Without sufficient bone, dental implants cannot be placed, and remaining teeth may become unstable.
When Is a Dental Bone Graft Needed?
A dental bone graft is recommended when there is not enough healthy bone in the jaw to support a planned procedure or to maintain oral health.
Before Dental Implant Placement
Dental implants require a certain amount of bone height, width, and density to be placed securely and function long term. If you have been told you do not have enough bone for implants, a bone graft can rebuild the area. This is the most common reason for dental bone grafts.
After Tooth Extraction (Socket Preservation)
When a tooth is extracted, the bone around the empty socket begins to shrink almost immediately. Socket preservation is a type of dental bone graft placed at the time of extraction to maintain the bone volume. This is especially important if you plan to get an implant later, as it prevents the need for a larger and more costly bone graft down the road.
Bone Loss from Gum Disease
Advanced periodontal disease destroys the bone supporting the teeth. Bone grafting can be performed as part of periodontal surgery to rebuild areas of bone loss and help stabilize teeth that might otherwise be lost. This type of graft is typically done during flap surgery by a periodontist.
Sinus Lift (Sinus Augmentation)
A sinus lift is a specific type of dental bone graft that adds bone to the upper jaw in the area of the premolars and molars. When upper back teeth are lost, the sinus cavity can expand downward into the space, leaving insufficient bone height for implants. A sinus lift raises the sinus membrane and places bone graft material underneath to create enough bone for implant placement.
Types of Dental Bone Graft Material
The type of bone graft material used depends on the size of the defect, the location, and your surgeon's recommendation. Each type has specific advantages.
- Autograft: Bone harvested from your own body, typically from the chin, jaw, hip, or shin. This is considered the gold standard because it contains living bone cells and growth factors. However, it requires a second surgical site.
- Allograft: Processed human bone from a tissue bank. It is thoroughly sterilized and treated to remove any disease risk. Allografts are widely used and eliminate the need for a second surgical site.
- Xenograft: Bone derived from an animal source, most commonly bovine (cow). The organic material is removed during processing, leaving a mineral scaffold that your body can remodel into natural bone.
- Alloplast (synthetic): Lab-made bone graft material, often made from calcium phosphate, hydroxyapatite, or bioactive glass. Synthetic grafts avoid any concerns about tissue sourcing and are available in unlimited quantities.
What Happens During a Dental Bone Graft
A dental bone graft is typically performed in a periodontist's or oral surgeon's office under local anesthesia. Sedation options such as nitrous oxide or IV sedation may be available for patients who are anxious.
Before the Procedure
Your surgeon will take X-rays or a CBCT (cone-beam CT) scan to assess the extent of bone loss and plan the graft. You will discuss the type of graft material, anesthesia options, and what to expect. If you take blood thinners or certain medications, your surgeon may give you specific instructions to follow before the procedure.
During the Procedure
After numbing the area, the surgeon makes a small incision in the gum tissue to expose the bone underneath. The bone graft material is placed into the area of bone loss. A collagen membrane is often placed over the graft to protect it and prevent the gum tissue from growing into the graft site before the bone has a chance to form. The gum tissue is then closed with sutures.
The procedure typically takes 45 minutes to 2 hours depending on the extent of grafting. A simple socket preservation graft may take under an hour, while a large block graft or sinus lift may take longer.
After the Procedure
You will receive instructions for post-operative care, including pain management, dietary guidelines, and how to keep the surgical area clean. Most patients are prescribed antibiotics and may be given a prescription pain reliever or advised to use over-the-counter medications.
Dental Bone Graft Recovery
Recovery from a dental bone graft occurs in two phases: soft tissue healing and bone maturation.
Soft tissue healing typically takes 1 to 2 weeks. Swelling and discomfort peak around days 2 to 3 and then gradually improve. Most patients return to normal activities within a few days, though strenuous exercise should be avoided for about a week. Eat soft foods for the first several days and avoid chewing directly on the graft site.
Bone maturation is the longer phase. The graft material needs several months to integrate and be replaced by your own bone. For socket preservation grafts, this typically takes 3 to 4 months. For larger grafts or sinus lifts, it may take 6 to 9 months before the bone is dense enough to support a dental implant. Your surgeon will monitor healing with periodic X-rays.
Risks and Success Rates
Dental bone grafts are considered safe and have high success rates when performed by a qualified specialist. In many cases, success rates are reported above 90%. However, as with any surgical procedure, there are risks.
Potential complications include infection at the graft site, graft failure (the body does not accept or integrate the graft), nerve damage, excessive bleeding, and sinus membrane perforation during sinus lifts. Smoking significantly increases the risk of graft failure and is one of the most important factors your surgeon will discuss with you. Patients who smoke are often advised to quit before and after the procedure to give the graft the best chance of success.
Dental Bone Graft Cost
The cost of a dental bone graft depends on the type of graft material, the size of the area being grafted, and the complexity of the procedure. Costs vary by location and provider.
A socket preservation graft after a tooth extraction typically costs $300 to $800. A bone graft to prepare for a dental implant ranges from $500 to $3,000 or more, depending on the extent of bone loss. A sinus lift typically costs $1,500 to $5,000 per side. These costs are separate from the cost of the dental implant itself.
Dental insurance may cover a portion of bone grafting when it is deemed medically necessary, such as grafting for periodontal disease. Coverage for grafts related to implant placement varies widely by plan. Many oral surgery and periodontal offices offer payment plans or work with third-party financing companies.
Who Performs Dental Bone Grafts?
Dental bone grafts are performed by periodontists and oral surgeons. Both specialists have advanced surgical training beyond dental school. A periodontist typically performs bone grafts related to gum disease treatment and implant site preparation. An oral surgeon may handle more complex reconstructive grafting, trauma-related cases, and sinus lifts.
If your general dentist has told you that you need a bone graft, they will typically refer you to one of these specialists. You can also search for a periodontist directly on our [periodontics specialty page](/specialties/periodontics).
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