Periodontal surgery is a group of procedures designed to treat advanced gum disease that hasn’t responded to non-surgical treatments like deep cleaning. It becomes an option when pockets between your gums and teeth measure 6 mm or deeper after an initial round of scaling and root planing. The goal is to reduce those pockets, regenerate lost bone or gum tissue, and create an environment where your teeth and supporting structures can stay healthy long-term.
Why Non-Surgical Treatment Comes First
Periodontal surgery is never the first step. Your periodontist will start with scaling and root planing, a deep cleaning that removes bacteria and tartar from below the gum line. Six to eight weeks later, they reassess. They’re looking for signs that the disease is still active: lingering inflammation, deep pockets, continued attachment loss, recession, or loosening teeth.
Sites where pockets have shrunk to 5 mm or less are managed without surgery going forward. But areas that remain at 6 mm or deeper typically benefit from a surgical approach. Surgery is only recommended for teeth that still have a reasonable prognosis, not for teeth already considered hopeless.
Pocket Reduction (Flap Surgery)
Pocket reduction surgery, also called flap surgery, is the most common type. The periodontist makes incisions in your gum tissue to create a flap, gently lifts it away from the teeth and bone, then cleans the root surfaces and removes infected tissue from the bone defects underneath. In some cases, the bone itself is reshaped to eliminate uneven craters where bacteria collect.
Once the area is clean and the bone has a smoother contour, the gum tissue is repositioned snugly against the teeth and sutured into place. The result is shallower pockets that are easier to keep clean with regular brushing and flossing. One commonly used technique, the modified Widman flap, is designed for minimal tissue removal, which helps limit gum recession after healing.
Bone Grafting and Regeneration
When gum disease has destroyed bone around a tooth, pocket reduction alone may not be enough. Bone grafting places material into the defect to encourage your body to rebuild what was lost. The graft material works in one or more ways: it can act as a scaffold for your own bone cells to grow across, it can stimulate nearby stem cells to become bone-forming cells, or it can contain living bone cells that produce new bone directly.
Graft material comes from several sources. Autografts use bone harvested from another site in your own body. Allografts come from a human donor. Xenografts are derived from animal bone (commonly bovine). Alloplasts are entirely synthetic. Your periodontist selects based on the size and shape of the defect and how much regeneration is needed.
One regenerative approach uses a protein-based material (enamel matrix derivative) applied to the root surface during surgery. A long-term study following patients for an average of 10.3 years found a tooth survival rate of about 91%, and pocket depths remained stable over that entire period, with virtually no change between the six-month mark and the final follow-up. That kind of stability suggests regenerative procedures can produce durable results when combined with good maintenance.
Gum Grafting for Recession
Periodontal surgery isn’t only about pockets and bone. When gums have receded and exposed the roots of your teeth, soft tissue grafting can cover those roots and rebuild the gum line. There are three main approaches, each suited to different situations.
- Free gingival graft: A piece of tissue is taken from the outer layer of the roof of your mouth and placed over the receding area. The primary goal is to thicken thin gum tissue and prevent further recession and bone loss.
- Connective tissue graft: Instead of the surface layer, a deeper piece of tissue is taken from under the palate. This type is often chosen when the goal is to cover exposed roots for cosmetic reasons or to reduce sensitivity to cold.
- Pedicle graft: Tissue from the gum right next to the recession site is rotated over to cover it, keeping its original blood supply intact. This works well for recession under a single tooth, but requires enough extra tissue in the neighboring area to make the rotation possible.
Laser-Assisted Surgery
A newer alternative to traditional scalpel-based surgery is LANAP (Laser-Assisted New Attachment Procedure). Instead of cutting and suturing gum tissue, a specialized laser targets diseased tissue and bacteria while leaving healthy tissue intact. Compared to conventional surgery, LANAP is associated with less postoperative pain, less recession, lower risk of tooth sensitivity, and faster healing. Both natural teeth and implants show regeneration of surrounding tissues with this approach. Not every case is a candidate for laser treatment, but it’s an option worth discussing if you want a less invasive experience.
What Recovery Looks Like
Expect some swelling, mild bleeding, and tenderness in the days following surgery. Sleeping with your head slightly elevated helps reduce swelling. Full recovery varies by procedure, but for gum grafting, the general timeline looks like this:
- Weeks 1 to 2: Soft foods only. Avoid chewing on the surgical site entirely.
- After week 2: You can gradually introduce more solid foods, chewing on the opposite side.
- Weeks 3 to 4: Most people return to a more normal diet, though crunchy or hard foods near the surgical area should still be avoided.
- Weeks 6 to 8: Full healing is typically complete.
During the first two weeks, stick to soft, cool, non-acidic foods. Avoid hot coffee for at least 48 to 72 hours. Skip carbonated drinks, which can irritate the site and potentially cause a graft to fail. Don’t use a straw, as the suction can dislodge healing tissue. Alcohol should be avoided for at least a week, and alcohol-based mouth rinses should be skipped entirely during recovery since they dry out and burn the tissue.
Who Is a Good Candidate
The best candidates are people with moderate to advanced gum disease who have already tried non-surgical treatment and still have deep pockets or progressive bone loss. Your overall health matters too. Uncontrolled diabetes, certain blood disorders, and heavy smoking all impair healing and can reduce the success of any periodontal procedure. Smoking in particular restricts blood flow to the gums, which slows tissue regeneration and increases the risk of complications.
Equally important is your commitment to maintenance afterward. Periodontal surgery addresses existing damage, but the disease can return if bacteria are allowed to accumulate again. Regular professional cleanings, typically every three to four months rather than the standard six, and thorough daily oral hygiene are what keep surgical results stable over the long term.