What Is a Tissue Bank Gum Graft?
A tissue bank gum graft is a periodontal procedure that uses donated human tissue to treat gum recession. The tissue, called an allograft, comes from a regulated tissue bank and has been processed to remove all cells while preserving the structural matrix. Your body repopulates this matrix with your own cells during healing, incorporating it into your gum tissue.
The most widely used tissue bank product for gum grafting is AlloDerm, an acellular dermal matrix made by BioHorizons (formerly LifeCell). AlloDerm was originally developed for burn treatment in the 1990s and has since become a standard option in periodontal surgery. Other similar products exist, but AlloDerm has the longest clinical track record in gum grafting.
How AlloDerm Works in Gum Grafting
AlloDerm arrives as a thin sheet of processed tissue. During surgery, the periodontist trims the AlloDerm to the size and shape needed, then places it over the exposed root surface and secures it under the gum tissue with sutures. Over the following weeks and months, your body's cells migrate into the AlloDerm scaffold, blood vessels grow through it, and it becomes part of your own gum tissue.
The end result is new, functional gum tissue covering the previously exposed root. Because the AlloDerm is acellular (all donor cells have been removed), the risk of rejection is extremely low. The tissue serves as a framework that your body rebuilds with its own cells.
Tissue Bank Graft vs. Palate Graft (Autograft)
In a traditional connective tissue graft, the periodontist cuts a small piece of tissue from the roof of your mouth (the palate) and transplants it to the recession site. This is called an autograft because the tissue comes from your own body. Autografts have been the gold standard for gum grafting for decades.
The main advantage of a tissue bank allograft over a palate autograft is the elimination of the donor site. The palate wound is often the most painful part of a traditional gum graft, and it takes 2 to 3 weeks to heal. With AlloDerm, there is no palate wound, so recovery is typically more comfortable.
Research comparing the two approaches shows similar root coverage outcomes in many clinical situations. Some studies suggest autografts may produce slightly thicker tissue long-term, which can be important in areas of heavy function. Your periodontist will recommend the approach best suited to your specific case.
What to Expect During a Tissue Bank Gum Graft
The surgical procedure for an AlloDerm gum graft is similar to other gum graft techniques, with one key difference: there is no palate harvesting step. Here is what typically happens.
Before Surgery
Your periodontist will evaluate the recession, take measurements, and review your medical history. They may take X-rays or a CBCT scan to assess bone levels. You will receive instructions about medications to avoid before surgery (such as blood thinners or aspirin) and any pre-surgical rinses to use.
During Surgery
The procedure is done under local anesthesia. Sedation is available if you prefer it. The periodontist makes small incisions around the recession site and gently lifts the existing gum tissue to create a pouch or flap. The AlloDerm tissue is trimmed to fit, positioned over the exposed root, and tucked under the flap. Sutures hold everything in place.
The entire procedure typically takes 60 to 90 minutes, depending on how many teeth are being treated. Treating multiple adjacent teeth in one session is common and efficient with AlloDerm because the tissue bank graft material is available in sheets large enough to cover several teeth at once.
After Surgery
Your periodontist will place a protective dressing over the surgical site and provide detailed aftercare instructions. You will leave with prescriptions for pain medication, an antibiotic, and an antimicrobial mouth rinse. Applying ice packs in 20-minute intervals for the first 24 hours helps control swelling.
Healing and Recovery After an AlloDerm Gum Graft
Recovery from a tissue bank gum graft is generally more comfortable than recovery from a traditional palate graft because you only have one surgical site to heal instead of two.
Recovery Timeline
During the first 3 to 5 days, expect mild to moderate discomfort, swelling, and some bruising. Most patients manage pain with prescription or over-the-counter medication. Stick to soft, cool foods and avoid chewing near the graft site.
By week 1 to 2, the initial healing is well underway. Sutures are removed at about 10 to 14 days. You can gradually return to a normal diet, but avoid hard, crunchy, or spicy foods near the site for at least 3 weeks.
Full tissue maturation takes 3 to 6 months. During this time, the AlloDerm scaffold is gradually replaced by your own tissue. The graft site will look and feel increasingly natural over this period. Your periodontist will schedule follow-up visits to monitor healing.
What Is Normal vs. What Needs Attention
Mild swelling, slight oozing, and discomfort that responds to medication are normal. White or yellowish coloring over the graft site during the first week is also normal and does not mean the graft has failed.
Contact your periodontist if you experience heavy bleeding that does not stop with gentle pressure, increasing pain after the first 3 days, fever above 101 degrees, or if the graft tissue appears to be pulling away from the tooth.
Cost of AlloDerm Gum Graft and Insurance Coverage
A tissue bank gum graft typically costs $600 to $1,500 per tooth. The cost of the AlloDerm material itself accounts for a portion of this, which is why allografts may cost slightly more than autograft procedures at some practices. Costs vary by location, provider, and the number of teeth treated.
When multiple adjacent teeth are treated in one session, the per-tooth cost is usually lower because the surgical time and AlloDerm sheet are shared across teeth. Treating 3 to 4 teeth at once might cost $2,000 to $4,000 total rather than $600 to $1,500 per tooth individually.
Dental insurance often covers gum grafting when it is deemed medically necessary, not cosmetic. Coverage typically ranges from 50% to 80% after the deductible, depending on your plan. Your periodontist's office can submit a pre-authorization to verify your benefits before scheduling surgery.
Why the Periodontist's Experience Matters
The technique used to place the graft matters as much as the material itself. AlloDerm is a passive scaffold. It does not contain living cells or growth factors that actively promote healing the way your own tissue does. This means the periodontist's surgical skill in positioning the graft, managing the blood supply, and securing the tissue plays a larger role in the outcome.
When choosing a periodontist for a tissue bank gum graft, ask how many AlloDerm graft procedures they perform regularly and what their typical root coverage results are. A periodontist who routinely uses AlloDerm will be familiar with its handling characteristics and the nuances that produce the best results.
Board-certified periodontists have passed examinations administered by the American Board of Periodontology and committed to ongoing continuing education. While board certification is not required to practice, it signals additional expertise.
Find a Periodontist Near You
A periodontist is the dental specialist trained in treating gum recession and performing gum graft surgery. Every periodontist on My Specialty Dentist has verified specialty credentials. Search by location to find a periodontist in your area who can evaluate your gum recession and recommend the best grafting approach.
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