Gum surgery: when deep cleaning is not enough

Surgery is not the first treatment for gum disease. The European guideline places it at step 3, after coaching and home care (step 1) and deep cleaning (step 2), and only for sites that have not reached the target when they are re-measured: no pocket deeper than 4 mm that bleeds, and none of 6 mm or more ^[2]. Deep cleaning does a great deal on its own: about three in four pockets closed after it in the review behind the guideline ^[1], and it can even improve the shape of some bone defects ^[5].

Whether surgery adds anything depends on the depth. A review of six randomised trials with at least a year of follow-up found that in pockets deeper than 6 mm, surgery gave 0.6 mm more pocket reduction and 0.2 mm more attachment gain than root cleaning without surgery. In 4 to 6 mm pockets, the non-surgical cleaning gained 0.4 mm more attachment, while surgery made those pockets 0.4 mm shallower; in shallow pockets of 1 to 3 mm, surgery led to 0.5 mm more attachment loss ^[3]. That is why surgery is planned site by site, for the pockets that need it, rather than for the whole mouth.

Gum surgery for other reasons has its own pages: covering exposed roots on receding gums, making room for a crown on crown lengthening, how much gum shows when you smile on gummy smile, and the gums around implants on peri-implantitis. This page is about the pockets and bone defects that gum disease leaves behind, which bone loss around teeth explains in more detail.

In pocket reduction surgery, also called open flap or access flap surgery, the gum is gently lifted back so the root surface can be cleaned under direct vision, the edges of the bone can be smoothed where needed, and the gum is stitched back so the pocket is shallower and easier to keep clean. When the bone is also reshaped, a review of nine trials found pockets 0.47 mm shallower at 6 to 12 months than with the access flap alone, though by three to five years the two did not differ, and gum recession tended to be greater after the reshaping ^[6].

Regenerative surgery is used where bone has been lost in a vertical, crater-like defect beside the root, 3 mm or deeper, the kind of defect the European guideline recommends treating this way ^[2]. After the root is cleaned, the defect is treated with a material that helps the body rebuild the attachment; the options studied include an enamel matrix protein gel, a barrier membrane and bone substitutes, and the choice is made for your defect. Across 79 randomised trials and 3,612 defects, every regenerative approach added attachment compared with surgery that only cleaned the root, 1.34 mm on average, and flap designs that preserve the gum between the teeth improved the results; the strength of the evidence was rated low to moderate ^[4].

The two are not rivals. A plan can combine them, reducing one pocket and regenerating another defect, and the choice for each site comes from the chart, the X-rays and the shape of the defect.

Regeneration has been tested on the teeth in the worst position. In a randomised trial, 50 people with stage III or IV periodontitis each had one tooth with attachment lost all the way to the root tip, the kind of tooth usually removed. Each was assigned at random either to regeneration of that tooth or to its extraction and replacement with an implant or a bridge. All were kept on supportive care every three months and followed for ten years ^[7].

At ten years, 88% of the regenerated teeth were still in place, against 100% of the replacements. The time without complications did not differ significantly between the groups, the regenerated teeth gained 7.3 mm of attachment with pockets of about 3.4 mm, both groups reported better oral health quality of life, and the trial's ten-year analysis of recurrences, the problems that needed retreatment along the way, favoured regeneration ^[7]. Both figures matter: replacement survived in every case, and regeneration kept nearly nine in ten teeth that would otherwise have been removed.

The authors note that the treatment is complex, which limits how widely it can be used, so not every tooth can be kept this way, and that cannot be promised in advance; in the trial, nearly nine in ten were. What it does mean is that a tooth with very little support left is assessed for regeneration before it is written off, which is how a conservative practice approaches every tooth. If you have been told a tooth cannot be kept, a second opinion or can this tooth be saved? is a sensible place to start.

Dr. Khalid charts your gums, stages the disease, carries out the deep cleaning for the earlier, shallower stages and re-measures every site, so the sites that may need surgery are known precisely. Pockets deeper than 5 mm, and all gum surgery, regeneration and grafts, are treated by our periodontist, who works in the same clinic.

The surgery is planned jointly before anything is booked. Dr. Khalid, our periodontist and the team sit down with the same charts, X-rays and photographs, so no step is missed, the case is seen from more than one angle, and the finished result meets the standards of function, aesthetics and biomimetics. That result is agreed first, down to which teeth will need a filling, an onlay or a crown and where their edges need to sit, and it becomes the brief the surgery is carried out to: the gum and bone are shaped for the teeth they will support, and the surgery is planned to the finished tooth rather than the tooth fitted to whatever the surgery leaves. Our periodontist carries out the surgery.

Dr. Khalid stays on your case throughout. He restores the teeth once the tissues have healed, reviews the result with the periodontist, and runs your supportive care visits together with the periodontist. How shared cases are planned across the practice is set out on team care.

Gum surgery is done under local anaesthetic, usually on one area of the mouth at a time. The periodontist lifts the gum, cleans the root, treats the bone defect where regeneration is planned, and closes the gum with fine stitches. You leave with aftercare instructions, and the follow-up as it heals is shared between our periodontist and Dr. Khalid, on the same chart.

Some swelling and tenderness in the first days are expected, and you are told beforehand what to take for them. The treated area is cleaned gently, as instructed, while it heals, and the pockets are measured again only once healing is complete. Roots can feel sensitive for a while: in a review of studies, root sensitivity after gum surgery was reported by 76.8% to 80.4% of people on the first day, falling to 36.8% after one week and 21.7% after eight weeks, and it was mostly mild to moderate ^[8].

After healing comes step 4: supportive care every 3 to at most 12 months, set by your risk ^[2]. Supportive care is what keeps the result: in the ten-year regeneration trial, everyone was seen every three months ^[7].