Do I need pocket reduction surgery?

Usually only if pockets of 6 millimeters or more remain after a deep cleaning and the healing period that follows. The European Federation of Periodontology's 2020 guideline suggests surgery for those deep residual pockets, and repeating the deep cleaning for pockets of 4 to 5 millimeters. The decision should rest on a full re-measurement twelve weeks after the deep cleaning, not on the measurements taken before it.

Is pocket reduction surgery painful?

It is done under local anesthetic, with sedation available, so the surgery itself should not hurt. In a study of 304 consecutive periodontal operations, Curtis and colleagues found that about half the patients reported minimal or no pain afterward, and that bone surgery was less likely to cause pain than gum grafting. In this practice's experience, two or three days of soreness managed with over-the-counter medication is typical.

Will my teeth look longer after gum surgery?

Often, a little. Shrinking a pocket means the gum heals at a lower level on the tooth. Long-term trials, including Kaldahl and colleagues' seven-year study, found the most gum recession after surgery that reshaped the bone. It is most noticeable on the front teeth, which is one reason the plan for front teeth is often more conservative than for back teeth.

Can I just have another deep cleaning instead?

For pockets of 4 to 5 millimeters, yes; that is what the guideline suggests. For pockets of 6 millimeters or more, another deep cleaning can still help. Surgery reduces those pockets further, and the guideline suggests it. A pocket that stays deep is hard for anyone to keep clean, which is why it matters.

Does insurance cover pocket reduction surgery?

Usually in part, when the pockets and bone loss are documented with a periodontal chart and X-rays. A pre-authorization, a written statement from the plan of what it expects to pay, is worth getting first. The practice is out of network: it files the claim for you, and the plan reimburses you directly.

Pocket Reduction Surgery in Austin: When It Is Needed

In the Austin area? Dr. Verrett provides this care in North Austin. See Gum Disease Treatment, or request a consult.

Most people hear the words “pocket reduction surgery” at a re-evaluation visit, about three months after a deep cleaning, when some of the numbers on the periodontal chart have not come down far enough. It is a reasonable moment to have questions. Why surgery now, when the cleaning was supposed to fix it? What does the operation actually do? What are the downsides? This article answers those questions with the evidence periodontists use to make the decision.

What Pocket Reduction Surgery Is

A periodontal pocket is the gap between the gum and the root that forms when gum disease destroys the bone and fibers holding the tooth. A deep cleaning (scaling and root planing) cleans that pocket from the top, with instruments passed down alongside the root without seeing the bottom. Pocket reduction surgery gets direct access instead.

Three views of one tooth. Before, calculus sits in a deep pocket with an inflamed gum. During, a curette cleans and smooths the root below the gum. Twelve weeks later the gum has shrunk and tightened to a pocket of 3 mm or less, healed by a long junctional epithelium, while the bone level is unchanged.

Under local anesthetic, the gum is gently folded back from the teeth. The roots are cleaned under direct vision, and the bone underneath is either reshaped or, where the shape of the defect allows, regrown. The gum is then stitched back at a level that leaves a shallow pocket. You may hear it called flap surgery, osseous surgery (osseous means bone), or periodontal surgery; the names overlap. The gum disease treatment page shows a diagram of each step.

The point of the operation is not the surgery itself. It is to turn a pocket too deep to keep clean into one that brushing, flossing and maintenance visits can keep healthy.

When It Is Recommended

Surgery comes after non-surgical treatment, not instead of it. The European Federation of Periodontology’s 2020 clinical practice guideline is built from 15 commissioned systematic reviews. It sets out treatment in steps: first hygiene and risk factors, then deep cleaning, then a re-evaluation once the tissue has healed. The guideline defines success as no pockets deeper than 4 millimeters that bleed when probed, and no pockets of 6 millimeters or more. Where those endpoints are not met, it moves to a third step, which includes surgery.

Within that third step, the guideline draws a clear line. For deep residual pockets of 6 millimeters or more in Stage III periodontitis, it suggests access flap surgery. For moderately deep residual pockets of 4 to 5 millimeters, it suggests repeating the deep cleaning instead. That line matters to a patient. A plan that proposes surgery on a mouth full of 4 and 5 millimeter pockets, without a second round of cleaning, does not follow the guideline.

There is a good reason not to operate on shallow pockets. In a landmark 1982 study, Lindhe, Socransky, Nyman, Haffajee and Westfelt treated one side of each patient’s mouth with deep cleaning alone and the other with deep cleaning plus flap surgery. Sites that started shallow lost attachment after treatment, and surgery cost them more than cleaning did. Only above a “critical probing depth” did treatment gain attachment: about 2.9 millimeters for deep cleaning alone and about 4.2 millimeters with surgery. Deeper than that, surgery gained more. The same study found that how well patients kept their teeth clean afterward mattered more to the result than which treatment they had received.

What the Surgery Achieves

The honest summary is that surgery makes deep pockets shallower than cleaning alone does. It gains a little more attachment in the deepest sites, and its advantage is largest where pockets are deepest.

A 2002 systematic review of randomized trials by Heitz-Mayfield and colleagues found that in pockets deeper than 6 millimeters, surgery gave 0.6 millimeters more pocket reduction and 0.2 millimeters more attachment gain at 12 months than deep cleaning alone. In 4 to 6 millimeter pockets, deep cleaning alone gained slightly more attachment. In shallow pockets, surgery caused more attachment loss.
The review behind the European guideline, by Sanz-Sánchez and colleagues, pooled 36 publications. It found access flap surgery gave significantly greater pocket reduction than repeat cleaning in deep pockets of 6 millimeters or more, in both short-term and long-term studies.
Kaldahl and colleagues followed 82 patients for up to seven years, with a different treatment assigned to each quarter of the mouth. Surgery that reshaped the bone produced the greatest pocket reduction in sites of 5 millimeters or more, and kept that advantage through year seven. In the deepest sites, of 7 millimeters or more, attachment gains were similar across deep cleaning, flap surgery and bone surgery.

Those millimeters can sound small. What they buy is a pocket a toothbrush, floss and a hygienist can reach. A shallower pocket is easier to keep free of bacteria at every maintenance visit for the rest of a patient’s life.

Reshaping Bone, or Regrowing It

Two broad kinds of operation sit under the same heading, and which one a tooth gets depends on the shape of the bone loss.

Two pairs of teeth. On the left the bone has dropped evenly below the original level along both teeth. On the right the bone is at its original level except for a V-shaped trench beside one root, an angular defect whose remaining bone walls can sometimes support regeneration.

Resective surgery reshapes the bone so the gum can lie flat and close against the tooth. It shrinks the pocket by lowering the gum to meet the bone. The guideline suggests it for deep residual pockets, “yet considering the potential increase of gingival recession.” The supporting review, by Polak and colleagues, found it reduced pockets more than a simpler access flap at 6 to 12 months. By 36 to 60 months the two were no different, and recession tended to be greater after the resective approach.

Regenerative surgery fills a bone defect with bone graft material, usually under a membrane, so that bone and attachment can grow back. An enamel-protein gel called Emdogain is an alternative; is Emdogain worth it? sets out what it adds. It suits a particular shape of defect: a narrow crater beside the root at least 3 millimeters deep, called an intrabony defect. A review of 79 randomized trials by Nibali and colleagues found regeneration gained about 1.3 millimeters more attachment than flap surgery alone in these defects. On that evidence, the European guideline recommends regenerative surgery for deep residual pockets with intrabony defects of 3 millimeters or more, its strongest grade of recommendation. Where it works, regeneration can change a tooth’s long-term outlook rather than simply holding it steady.

Many mouths need both, on different teeth. The X-rays and the measurements taken at surgery decide which approach suits which tooth.

The Trade-Off: The Gum Sits Lower

Pocket reduction works partly by moving the gum down to meet the bone, so the gum ends up lower on the tooth. In Kaldahl’s seven-year trial, recession was greatest after bone surgery, then flap surgery, then deep cleaning, and that order held for the length of the study. In everyday terms, the teeth can look a little longer. More root may be exposed, which some people notice as sensitivity to cold for a few weeks. Small spaces can open between teeth near the gumline.

In this practice’s experience, those changes matter most on the upper front teeth, where they show when you smile. They matter least on the molars, where most deep pockets are. That is one reason a plan often treats back teeth surgically and front teeth more conservatively, and why regeneration is chosen wherever the defect allows it.

Does It Hurt?

The surgery is done under local anesthetic, and sedation is available for patients who prefer it. Afterward, the evidence is reassuring. In 304 consecutive periodontal operations, Curtis and colleagues found that moderate or severe complications occurred in 5.5 percent of cases, and that about half of patients reported minimal or no pain. Bone surgery was more likely than gum grafting to cause swelling or bleeding afterward, but less likely to cause pain. Does periodontal surgery hurt? goes into more detail.

Recovery

In this practice’s experience, recovery runs like this: two to three days of swelling and soreness, a week of soft food and no brushing of the treated area, and sutures out at one to two weeks. Most people return to desk work within a day or two. Usually one area of the mouth is treated per visit, so a full-mouth plan is spread over several appointments. What to eat after periodontal surgery covers the first week of meals.

Afterward: Maintenance Decides the Result

Surgery creates a pocket that can be kept clean; maintenance is what keeps it clean. In Lindhe’s 1982 study, the results of both treatments held for two years with a professional cleaning every three months. The patients’ own home care mattered more than the type of surgery. Periodontal maintenance every three to four months is part of the treatment, not an optional extra. What periodontal maintenance means explains why the interval is short.

If Surgery Has Been Recommended to You

These questions are fair to ask, and a well-run office will answer them without hesitation:

Which teeth, and what are their pocket depths now, after the deep cleaning and healing period?
Which of those pockets are 6 millimeters or deeper, and could any of the shallower ones be re-cleaned instead?
For each tooth, will the bone be reshaped, or is the defect the right shape to regrow?
How much will the gum move, and will it show when I smile?
How many visits will it take, and which area is treated first?
What does my maintenance schedule look like afterward, and who sees me?
May I have copies of my periodontal chart and X-rays?

The last question is the most useful one. A chart with real numbers on it makes any recommendation easy to check anywhere. A second opinion is reasonable before any surgery, and it often confirms the first plan.

Cost and Insurance

What surgery costs depends on how many areas of the mouth are treated, whether bone is reshaped or regrown, and whether you choose sedation. A reliable figure therefore comes from a written estimate after an exam. Dental plans usually cover part of periodontal surgery when the diagnosis is documented. For treatment of this size, a pre-authorization is worth having first. The plan reviews the proposed treatment, the chart and the X-rays, and states in writing what it expects to pay. Does insurance cover it? explains pre-authorization and how an out-of-network claim works.

Pocket Reduction Surgery in North Austin

Dr. Andrew Verrett is a Diplomate of the American Board of Periodontology and the only doctor at Austin Periodontal Associates. He treats every stage of gum disease at the office on North Mopac. Treatment starts with a deep cleaning and a full re-measurement. Surgery follows only where pockets remain deep, with regeneration wherever the shape of the bone loss allows it. The practice uses conventional surgery rather than lasers, and sedation is available. This full-mouth case shows a result one month after surgery. Request a consult or call (512) 346-6097.

Pocket Reduction Surgery: When You Need It and What to Expect