Quick answer
Most gum grafts survive — Cleveland Clinic reports success rates over 90% — but risks include partial graft loss, infection, bleeding, palate pain, scarring and recurrence of recession. A black, painful graft or worsening swelling after day three needs a prompt check.
A gum graft is a small operation with a good track record, but it is still surgery on tissue that depends on a fragile blood supply. Most grafts survive. Some partially lose coverage. A few fail outright and need a revision.
Knowing the difference between normal healing and a problem is more useful than a single success percentage.
The reported success rate
Cleveland Clinic states that gum grafting has a good success rate, over 90%. That is a reasonable headline figure for graft survival across techniques and defects.
It does not mean 90% of patients get a perfect gum line. Studies and audits measure different outcomes: complete root coverage, mean coverage, graft survival, patient satisfaction. A graft can survive and still leave part of the root exposed.
Ask your surgeon what they mean by success for your specific tooth. “The graft will take” and “the root will be 100% covered” are different claims.
The risks
Partial or complete graft loss
The graft does not integrate with the recipient bed. It may slough in the first two weeks, leaving the root exposed again. Risk factors include smoking, poor plaque control, a thin biotype, a large defect and inadequate blood supply.
Infection
Uncommon in a clean graft, but possible. Signs include increasing pain after day three, pus, a bad taste and fever. Antibiotics may be needed.
Bleeding and haematoma
A small amount of oozing is normal. Bleeding that does not stop with pressure, or a rapidly expanding swelling, needs attention.
Palate donor-site problems
The palate wound can be the most uncomfortable part of the procedure. It may bleed, heal slowly, or leave a sore spot. A stent or dressing helps. Most heal within two to four weeks.
Scarring and colour mismatch
The grafted tissue may be paler, thicker or a slightly different shade. This is more common with free gingival grafts than with connective tissue grafts. It usually improves over months but may not disappear.
Altered sensation
Temporary numbness or altered sensation at the palate or the recipient site is possible. Permanent change is uncommon.
Recurrence of recession
The graft does not remove the cause. Hard brushing, gum disease, grinding or smoking can damage the graft and neighbouring tissue. Maintenance matters.
Root exposure at the margin
Even a successful graft can leave a millimetre or two of root exposed, especially at the edges. This is not necessarily a failure.
Warning signs by day
| Time | Normal | Call the surgeon |
|---|---|---|
| Day 0–2 | Oozing, swelling, soreness, pale graft | Bleeding that will not stop, rapidly expanding swelling |
| Day 3–7 | Swelling falling, white/yellow film, mild pain | Fever, pus, bad taste, increasing pain |
| Week 2 | Sutures removed, graft pinker | Graft lifting away, black tissue, persistent pain |
| Week 4–12 | Colour blending, gum line settling | New recession, sensitivity that worsens |
A black graft is not always dead — superficial sloughing can look dark — but it needs to be seen. Do not wait for the next scheduled visit if the site is painful and changing.
Who is at higher risk
- Smokers and vapers. Nicotine constricts blood vessels; healing suffers.
- People with uncontrolled diabetes. High blood glucose impairs wound healing.
- Patients with active gum disease. Inflammation undermines the graft.
- Heavy grinders or clenchers. Mechanical force can compromise the margin.
- Thin biotype with a large defect. Less tissue to work with.
- Patients on certain medications. Blood thinners, immunosuppressants and some drugs affect healing; the surgeon needs the full list.
- Poor plaque control. Bacterial load at the site is a major risk.
None of these makes surgery impossible. They change the plan, the consent conversation and the follow-up.
What a revision involves
If the graft fails or coverage is inadequate, the surgeon may recommend a second procedure after three to six months. Options include:
- A new connective tissue graft with more tissue.
- A different technique, such as a pedicle flap or a matrix.
- Combining a soft tissue graft with a bone graft if the root prominence is due to bone loss.
- A crown or restoration if the root surface cannot be covered.
A revision is usually billed as a new procedure. Some practices discount it; some do not. Ask about the revision policy before the first surgery — not after.
How to reduce the risk
- Stop smoking at least two weeks before and during healing.
- Get plaque control and gum disease under control first.
- Follow the aftercare instructions exactly: no brushing the graft, no straws, no crunchy food.
- Take pain relief on schedule for the first 24 hours.
- Attend the 7–14 day check and the 8–12 week review.
- Keep periodontal maintenance every three to six months.
The cost of a failure
A failed graft can mean a second surgical fee, another recovery and more time with an exposed root. That is why the recovery rules matter, and why the cheapest quote is not automatically the best value. The cost hub explains what a revision may add.
The bottom line
A gum graft is a reliable procedure with a failure rate that is low but not zero. The best protection is a clear diagnosis, a technique matched to the defect, a surgeon who explains the failure plan, and aftercare that respects the first two weeks.
Frequently asked questions
What is the success rate of a gum graft?
Cleveland Clinic reports success rates over 90% for gum grafting. That figure refers to graft survival, not perfect root coverage. Coverage, colour match and long-term stability vary by defect, technique and aftercare.
What does a failing gum graft look like?
A graft that turns black, becomes increasingly painful, develops a bad smell or pus, or lifts away from the root may be failing. A pale or white film in the first week is common and is not automatically a failure. Call the surgeon if you are unsure.
Can a gum graft be redone?
Yes. A revision is possible after the tissue has healed, often three to six months later. It may use a different technique or more donor tissue. A revision is usually billed as a new procedure, sometimes at a reduced fee.
Does smoking cause gum grafts to fail?
Smoking impairs blood flow and healing and is one of the strongest modifiable risk factors for periodontal disease and graft failure. Surgeons typically ask patients to stop before surgery and during healing.