Gum Recession Treatment: From Gum Grafting to the Chao Pinhole Technique

You catch it in the bathroom mirror one morning. One of your front teeth looks longer than its neighbor, as if it has grown. It has not. The gum around it has moved. A week later you take a sip of ice water and a sharp twinge runs up that same tooth.

That is how gum recession usually announces itself: quietly, one tooth at a time, with no pain until a root is exposed. It is common, it does not reverse on its own, and it is very treatable. The question is which treatment fits your mouth.

What Gum Recession Is (and Why It Matters)

Gum recession is the gum margin pulling back from the crown of the tooth, exposing part of the root. Roots are covered in cementum, not enamel, and cementum is softer and more porous. Once it is exposed, three things tend to follow.

Sensitivity comes first, because cold and sweet reach the nerve more easily through root surface than through enamel. Root decay follows, since exposed root breaks down more easily than enamel and is harder to keep clean. Over time a notch can wear into the softer root at the gumline, and in advanced cases recession travels with loss of the bone that holds the tooth in place.

It is also common. Using data from the third National Health and Nutrition Examination Survey, Albandar and Kingman reported in the Journal of Periodontology in 1999 that 22.5 percent of U.S. adults aged 30 to 90 had at least one tooth surface with 3 millimeters or more of recession, and that prevalence, extent, and severity all rose with age. A 2003 review in the Journal of the American Dental Association put it more broadly: 50 percent of people aged 18 to 64 and 88 percent of people 65 and older have one or more sites with recession.

What Causes Receding Gums

There is rarely a single cause. Two or three factors usually stack up on the same tooth.

Periodontal disease. Chronic inflammation destroys the fibers and bone that support the gum, and the gum follows the bone down. If your gums bleed or you have been told you have deep pockets, read the warning signs of gum disease before anything else, because recession caused by disease is treated differently from recession caused by brushing.

Brushing too hard or with a hard brush. Gum tissue is not built to take abrasion every day. In a 1989 study of 258 adults in the Journal of Periodontology, frequent brushers had more surfaces with recession than infrequent brushers did, in both jaws.

Thin tissue and genetics. Some people are born with a thin band of gum and a thin plate of bone over the roots. Those sites recede with far less provocation than thick tissue does.

Tooth position and orthodontic movement. A tooth that sits outside the arch, or is moved outward during braces, can end up with little bone over its root, and the gum recedes to match.

Clenching and grinding. Heavy forces flex the tooth at the gumline and are associated with recession and notching there.

Tobacco. The 2003 review lists tobacco use among the factors correlated with recession.

Muscle pull. A tight frenum, the band of tissue connecting lip or cheek to gum, can tug at the gum margin every time you move your mouth. Releasing it with a frenectomy is sometimes part of the plan.

One point worth repeating from that 2003 review: recession shows up in people with excellent hygiene as well as poor hygiene. Having receding gums does not mean you have been careless.

Signs You May Have Recession

• Teeth that look longer than they used to, or longer than their neighbors.
• Sensitivity to cold or sweet on one tooth or a few, especially at the gumline.
• A notch you can feel with a fingernail where the tooth meets the gum.
• A visible color change at the gumline, where the yellower root shows below the whiter enamel.
• Small triangular gaps opening between teeth where the gum used to fill the space.
• Gums that look thin, pale, or shiny over the roots.

Does Every Case Need Treatment?

No, and an honest exam should say so.

Small, stable recession that is not sensitive often needs nothing more than monitoring, a soft brush, and a change in technique. We measure and photograph the sites and compare at your next visit. If nothing is moving, nothing needs to be done.

Treatment is considered when recession is progressing between visits, when sensitivity is not responding to desensitizing toothpaste or fluoride, when the exposed root is at risk of decay or is already notched, or when the appearance bothers you. Those are all legitimate reasons.

There is one hard prerequisite. If periodontal disease is active, it must be controlled first, usually with scaling and root planing and, for deeper pockets, sometimes LANAP laser therapy. Tissue placed over an infected root does not survive. Recession surgery is for healthy mouths that have lost ground, not for mouths still losing it.

Gum Grafting: The Long-Standing Standard

Gum grafting is the collective name for procedures that cover an exposed root, or thicken thin gum, with grafted tissue. Our practice performs three main types, and each has a job.

Free gingival graft. A thin layer of tissue from the palate is placed where the gum is thin. Its job is to thicken tissue and add a band of firm, attached gum rather than to cover a root.

Subepithelial connective tissue graft. This is the workhorse for root coverage. Tissue from under the surface layer of the palate is placed in a small pocket at the recession site and covered by the existing gum. First described by Langer and Langer in the Journal of Periodontology in 1985, the connective tissue graft is widely considered the most predictable method of root coverage. It is fed by blood supply from both the gum above and the bone beneath, and because it is your own tissue, the color match is excellent.

Acellular dermal matrix allograft. Medically processed, donated human tissue takes the place of palate tissue. The advantage is simple: no second surgical site, which is the part of grafting patients dislike most.

Before grafting, the teeth are cleaned above and below the gumline with scaling and root planing and we go over home care, since grafting a tooth that will be scrubbed too hard again makes little sense. Under local anesthesia, small incisions create a pocket at the site, the graft is placed slightly larger than the recession area, and sutures hold it while it heals. A dressing protects the site for the first week, and the gums look uniform at about six weeks. Our gum grafting page describes the procedure in more detail, and our post-graft surgery instructions cover the recovery day by day.

The Chao Pinhole® Surgical Technique: Scalpel-Free, Suture-Free

The Chao Pinhole® Surgical Technique treats recession without a graft from the palate and without cutting or stitching the gum.

A small entry hole is made in the gum with a needle. Through it, specially designed instruments loosen the gum tissue and guide it down over the exposed root, and strips of collagen membrane placed through the same hole hold the tissue in place while it heals. With no cutting and no stitching, patients can expect minimal post-operative pain, swelling, and bleeding, and most are pleasantly surprised by the immediate cosmetic improvement. Several teeth can be treated in one visit.

The technique was first published by Dr. John Chao in the International Journal of Periodontics and Restorative Dentistry in October 2012, a case series of 43 patients and 121 recession sites followed for an average of 18 months. A long-term follow-up in the same journal tracked 28 of those original patients and 68 sites for an average of 14.5 years. Complete root coverage was 81.2 percent in the original study and 77.9 percent at follow-up; mean root coverage was 94.0 percent originally and 86.6 percent at follow-up.

Two honesty notes belong next to those numbers. First, much of the Pinhole literature, including that long-term follow-up, lists Dr. Chao, the technique's developer, among its authors. The strongest independent evidence is a randomized split-mouth trial at the University at Buffalo, published in Compendium in January 2025, in which 36 patients received the Pinhole technique with a collagen membrane on one side of the mouth and a coronally advanced flap with a connective tissue graft on the other. At one year the two were statistically similar: recession reduction of about 2 millimeters with each, and root coverage of 63.6 percent for Pinhole versus 65.4 percent for the graft. The width of firm, keratinized gum was also similar between the two.

Second, every percentage above is an average. Your result depends on the type and severity of recession, your tissue thickness, and how much bone remains between the teeth. Sites with intact bone between the teeth (Miller Class I and II) cover far more predictably than sites where that bone is gone. Our Chao Pinhole technique page covers candidacy in detail.

Grafting vs. Pinhole: How the Choice Is Made

The decision is made at an exam, not from a web page. The factors that matter most:

• Tissue thickness and the amount of firm, attached gum. The Pinhole technique needs at least 2 to 3 millimeters of attached gum to work with. Thinner than that, a graft that adds tissue is usually the better call.
• Number of sites. Many teeth with mild to moderate recession favor Pinhole, which can treat them together. One deep site with thin tissue favors a graft.
• Bone levels. The bone between the teeth sets the ceiling on how much root either technique can cover.
• Bite and grinding. Forces that caused the recession will undo the repair unless managed, often with a night guard.
• Health history. Pinhole candidates should be non-smokers, free of diabetes or autoimmune disorders that slow healing, and free of active decay, failing restorations, or periodontal disease. Poor home care and uncorrected overbrushing are also reasons to hold off.

Some cases combine approaches: a graft at one or two deep sites and the Pinhole technique across the rest.

What Recovery Looks Like

After the Pinhole technique. Expect mild soreness rather than pain. The main rule is hands off: no brushing in the treated area for six weeks. We see you the following week, again about three weeks later, and then as needed.

After a gum graft. Plan on soft foods for several days. If tissue came from your palate, that is usually the tender spot, and a stent or dressing helps. The gums look uniform at about six weeks. Our post-graft surgery instructions spell out what to eat, how to clean the rest of your mouth, and when to call.

For either procedure, sedation dentistry is available if anxiety is what has kept you from treating this. And smoking remains the single biggest controllable risk to healing; we will talk about it frankly before scheduling.

Protecting Your Results

Treating recession without fixing the cause is a short-term win. The habits that protect a repaired site are the ones that would have prevented it.

• Use a soft or extra-soft brush, light pressure, and a technique your hygienist has watched you perform.
• Wear a night guard if you clench or grind.
• Keep up periodontal maintenance visits so changes are caught early, when they are still small.
• Stop tobacco in all forms.
• If a frenum is pulling on the gum, have it evaluated. A frenectomy is a minor procedure.

A tooth that looks longer than it used to is worth a measurement, not worry. The earlier recession is measured, the more options stay open.

This article is general educational information about periodontal treatment. It is not a substitute for an examination, diagnosis and treatment plan from a licensed dental professional.