Why Gum Grafting Is Done
Gum grafting replaces tissue that has receded away from the teeth. When gums recede, the root surface of the tooth becomes exposed. Exposed roots are vulnerable to decay, sensitivity to hot and cold, and further tissue loss. In more severe cases, recession can eventually compromise the tooth's support structure.
The goal of gum grafting is to cover exposed roots, thicken thin gum tissue, or both. The type of graft your periodontist recommends depends on how much recession is present, the thickness of your existing gum tissue, the location in your mouth, and whether the primary goal is root coverage or tissue reinforcement.
Connective Tissue Graft
The connective tissue graft is the most widely used gum grafting technique and is considered the gold standard for root coverage procedures. Research published in the Journal of Periodontology has demonstrated mean root coverage of 80% to 90% with this technique in appropriately selected cases.[1]
How It Works
Your periodontist creates a small flap in the roof of your mouth (palate) and removes a piece of connective tissue from beneath the surface. This tissue is then placed over the exposed root at the recession site and stitched into position. The flap on the palate is closed with sutures.
The connective tissue graft is versatile because it can be combined with different flap techniques at the recipient site. The most common approach is the coronally advanced flap, where the existing gum tissue is gently moved upward to cover the graft.
Best For
This graft type is best for patients who need root coverage on one or more teeth and have moderate recession (1 to 4 millimeters of exposed root). It provides both root coverage and tissue thickening. It works well in the front of the mouth where appearance matters because the healed tissue blends naturally with surrounding gum tissue.
Recovery
Recovery typically takes 2 to 3 weeks. The palate donor site is often the most uncomfortable area during the first week. Most patients manage pain with over-the-counter medication and a soft diet. The palate heals fully within 3 to 4 weeks.
Free Gingival Graft
The free gingival graft takes tissue directly from the surface of the palate rather than from beneath a flap. The harvested tissue includes the outer layer of gum (epithelium) along with a thin layer of connective tissue underneath.
How It Works
Your periodontist removes a small, thin piece of tissue from the surface of the palate. This tissue is placed directly at the recession site and sutured into position. Because the tissue is taken from the surface, the donor site on the palate heals as an open wound rather than a closed flap, which can be more uncomfortable during the first week.
Best For
Free gingival grafts are primarily used to increase the width and thickness of attached gum tissue, not to cover exposed roots. They are often recommended for patients with very thin gum tissue who are at risk for future recession, even if little recession has occurred yet. This graft type is also common around dental implants where thick, firm tissue is needed.
Because the surface tissue from the palate is lighter in color than the gum tissue around your teeth, free gingival grafts can result in a visible color difference at the graft site. For this reason, they are used more often on back teeth where appearance is less of a concern.
Recovery
Recovery takes 2 to 3 weeks. The palate donor site heals more slowly than with a connective tissue graft because the wound is open rather than covered by a flap. Your periodontist may place a palatal stent (a plastic guard) over the donor site to protect it and reduce discomfort during healing.
Pedicle Graft (Laterally or Coronally Repositioned Flap)
A pedicle graft moves tissue from the area immediately adjacent to the recession site rather than harvesting tissue from the palate. Because the tissue remains partially attached to its blood supply, healing is often faster.
How It Works
Your periodontist creates a flap of gum tissue next to the recession site, rotates or slides it over the exposed root, and sutures it into place. The flap stays connected to its original blood supply at one edge, which promotes faster healing and better tissue survival. In the lateral pedicle technique, tissue is moved sideways from an adjacent tooth. In the coronally advanced flap, the tissue below the recession is shifted upward.
Best For
Pedicle grafts work best when there is thick, abundant gum tissue next to the recession site. They are ideal for isolated areas of recession on one or two teeth where the neighboring tissue is healthy and adequate. This technique cannot be used if the surrounding tissue is thin or if recession affects multiple adjacent teeth.
Recovery
Recovery is typically 1 to 2 weeks, which is faster than palatal graft techniques. Because there is no palate donor site, patients experience less overall discomfort. The maintained blood supply also reduces the risk of graft failure.
Allograft (AlloDerm and Other Donor Tissue)
An allograft uses processed tissue from a human donor rather than tissue from your own mouth. AlloDerm is the most widely known brand. The donor tissue is sterilized and processed to remove all cells, leaving a collagen scaffold that your body repopulates with its own cells after placement.
How It Works
Your periodontist places the processed donor tissue over the exposed root and covers it with a flap of your own gum tissue. No tissue is harvested from the palate, so there is only one surgical site. The donor tissue acts as a framework that your body gradually replaces with your own tissue over several months.
Best For
Allografts are a good option for patients who want to avoid a palate donor site, need grafting at multiple sites in one appointment, or have a thin palate that may not provide enough tissue. They are also useful for patients who had a previous graft from the palate and do not have enough tissue remaining for another harvest.
Research in the Journal of Periodontology shows that allografts can achieve root coverage outcomes similar to connective tissue grafts in many cases, though some studies show slightly less predictable results in severe recession.[2]
Recovery
Recovery at the graft site is similar to other techniques, typically 2 to 3 weeks. The main advantage is the absence of a palate wound, which significantly reduces post-operative pain and allows patients to eat more comfortably during healing.
Gum Graft Types at a Glance
Each graft type has distinct strengths. Your periodontist considers all of these factors together when recommending a technique.
- Connective tissue graft: Best root coverage results, palate donor site required, 2-3 week recovery, gold standard for moderate recession
- Free gingival graft: Best for thickening tissue, palate donor site required, 2-3 week recovery, visible color mismatch possible
- Pedicle graft: Good root coverage, no palate donor site, 1-2 week recovery, requires thick tissue adjacent to the recession
- Allograft (AlloDerm): Good root coverage, no palate donor site, 2-3 week recovery, higher material cost
Cost Comparison by Graft Type
Gum graft costs depend on the type of graft, the number of teeth treated, geographic location, and your periodontist's fees. Costs vary by location, provider, and case complexity.
A single-tooth gum graft typically costs $600 to $1,200. When multiple teeth are treated in one session, the per-tooth cost often decreases. Allografts using processed donor tissue tend to be more expensive due to material costs, typically adding $200 to $500 per site compared to autogenous (your own tissue) grafts.
Most dental insurance plans cover a portion of gum grafting when it is deemed medically necessary, which includes cases with significant recession, root exposure, or progressive tissue loss. Some plans classify gum grafting as a periodontal surgical procedure with a higher coverage percentage than cosmetic procedures. Check with your plan for specific coverage details.
When to See a Periodontist for Gum Grafting
A periodontist is the dental specialist trained in the prevention, diagnosis, and treatment of gum disease and in the placement of dental implants. Periodontists complete 3 additional years of residency training focused on the gums, bone, and supporting structures of the teeth.
You should see a periodontist if you notice your gums pulling away from your teeth, if your teeth look longer than they used to, if you have sensitivity along the gumline, or if your general dentist has identified recession during a routine exam. A periodontist can measure the extent of recession, assess your tissue thickness, and recommend the graft type that gives you the best outcome for your specific situation.
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