Graft Surgery for Gum Recession Repair involves transplanting tissue to cover exposed root surfaces, restoring both esthetics and function. Multiple surgical techniques exist, each offering advantages depending on the extent and location of recession and individual patient characteristics.
Connective Tissue Autograft: The Gold Standard
The connective tissue autograft (CTA) remains the most frequently performed and most successful graft technique. Tissue is harvested from the patient's own palate through a small incision, and subepithelial connective tissue is carefully removed.
This tissue is then placed beneath the existing gum flap over the denuded root surface and secured with sutures. The tissue integrates into the recipient site over four to six weeks, eventually becoming indistinguishable from the surrounding gum.
Advantages include high predictability—most cases achieve 85 to 95 percent root coverage—and excellent long-term stability. Esthetics are excellent because the graft integrates with adjacent tissue. Disadvantages include creating a palatal donor site that heals secondarily, requiring one to two weeks of discomfort and dietary modifications.
Free Gingival Graft
A free gingival graft (FGG) transfers full-thickness epithelial and connective tissue from the palate to the recession site. This tissue is sutured in place and must revascularize from the recipient site blood supply.
Free grafts typically require longer healing (two to three months) and achieve slightly less predictable root coverage than CTG. However, they're effective for shallow recessions and are simpler technically.
Allografts and Xenografts
Acellular dermal matrix allografts (human cadaveric tissue processed to remove cellular components) provide an alternative to autografts. These eliminate the need for a palatal donor site, reducing patient morbidity.
Acellular porcine dermis (xenograft) offers similar advantages. These materials must be covered by repositioning existing gum flap—they don't create new gum tissue but provide a scaffold for new tissue development.
Results with allografts are generally good, achieving 60 to 80 percent root coverage, though outcomes are somewhat less predictable than autografts. Cost is often higher. Long-term outcomes appear equivalent to autografts in most cases.
Guided Tissue Regeneration and Biologics
Barrier membranes sometimes combined with graft material can enhance regeneration. These create a space allowing connective tissue cells to repopulate the surgical site while excluding epithelium.
Growth factors and bone morphogenetic proteins applied to graft sites may enhance healing and integrate. These biologics are sometimes combined with graft procedures to optimize results.
Surgical Technique Details
The procedure begins with careful anatomic assessment determining recession depth, root exposure dimensions, and tissue dimensions affecting surgical planning.
Local anesthesia ensures comfort during the procedure. For autografts, the palatal incision is made to outline the tissue to be harvested. The tissue is carefully dissected, removed, and positioned at the recipient site.
For recipient site preparation, the gum flap may be elevated, or for some techniques like the tunneling approach, gum is gently reflected without creating a flap. The graft is positioned to cover the exposed root and secured with fine sutures.
Recovery Timeline
Post-operative discomfort varies by technique. Autograft donor sites typically cause the most discomfort for the first few days to two weeks. Recipients sites have minimal discomfort with most procedures.
The palatal area heals slowly over two to three weeks. Soft diet, avoiding the surgical area, and gentle rinsing help optimize healing. Most people return to normal activities within three to five days, though strenuous activity and exercise are delayed one to two weeks.
Results and Expectations
Root coverage averages 80 to 95 percent for connective tissue grafts, with most teeth achieving excellent coverage. Some recession may persist, particularly in deeper recessions or when grafting multiple areas.
Color match is typically excellent for autografts—the tissue integrates and appears identical to adjacent gum. Allografts may show slight color variation initially, though this typically improves with time.
Graft durability is excellent long-term. Recession recurrence rates are low when grafts are successful. Most patients enjoy durable results lasting many years.
Preventing Graft Failure
Success depends on multiple factors. The surgical site must be kept clean without plaque accumulation—excellent home care is essential. Mechanical trauma to the area (aggressive brushing or flossing) risks graft failure.
Many surgeons recommend a soft diet for the first week and gentle care of the surgical area. Avoiding smoking during healing optimizes graft integration.
Complications and When to Contact Your Surgeon
Minor bleeding and discomfort are expected. Excessive bleeding not controlled by pressure suggests you should contact your surgeon.
Signs of infection—increasing pain, swelling, fever, or purulent drainage—require prompt attention. Graft failure (visible whitening or sloughing of graft tissue) requires notification to your surgeon for potential intervention.
Comparing Graft Techniques
Connective tissue autografts offer the best predictability and esthetics but require donor site morbidity. Allografts avoid this but are more expensive and results are slightly less predictable.
The pinhole surgical technique offers minimally invasive recession correction without grafting. Your surgeon will recommend the technique most appropriate for your recession characteristics.
Graft surgery effectively addresses significant gum recession, restoring both esthetics and function. Understanding the different techniques, recovery expectations, and success rates helps you make informed decisions about graft surgery with your periodontist.