Root planing is a dental procedure that smooths the surfaces of your tooth roots to remove bacteria, tartar, and contaminated tissue trapped beneath your gumline. It’s typically paired with scaling (which cleans the tooth surfaces above and below the gums) and together they’re often called a “deep cleaning.” The goal is to treat gum disease by creating a clean, smooth root surface that allows your gum tissue to heal and reattach to the tooth.
How It Differs From a Regular Cleaning
A standard dental cleaning, called prophylaxis, focuses on removing surface stains, plaque, and tartar from the visible parts of your teeth. It’s a preventive measure for people with healthy gums. Root planing goes deeper, both literally and in purpose. It targets plaque and tartar that have migrated below the gumline into the pockets between your teeth and gums, and it’s a treatment for active gum disease rather than a routine maintenance visit.
In a healthy mouth, the small gap between your gum and tooth measures 1 to 3 millimeters. When gum disease develops, that gap deepens into a pocket. Pockets deeper than 4 millimeters typically indicate periodontitis, and once they reach 5 millimeters or more, regular brushing and standard cleanings can no longer reach the bacteria inside. That’s when root planing becomes necessary.
What Happens During the Procedure
Your dentist or hygienist will use one of two types of instruments, or a combination of both. Hand instruments called curettes give the provider precise control and strong tactile feedback, letting them feel the root surface as they work. Ultrasonic scalers use vibrations and a water spray to break up tartar more quickly, and they’re especially useful for reaching deep pockets and hard-to-access areas between roots. Many providers use ultrasonic instruments first to clear the bulk of the buildup, then switch to hand tools for finer smoothing.
The procedure usually involves a local anesthetic to numb the area being treated. Your mouth is divided into four quadrants (upper left, upper right, lower left, lower right), and depending on how extensive your gum disease is, your provider may treat one or two quadrants per visit rather than doing the entire mouth at once. During scaling, they remove all the plaque and hardened tartar from the tooth surfaces above and below the gumline. During root planing, they smooth the root itself by removing a thin layer of contaminated root surface material. This matters because a rough root acts like Velcro for bacteria. A smooth root lets your gum tissue lie flat against it and begin to heal.
Why Smoothing the Root Works
When bacteria colonize the space below your gumline, they don’t just sit on the surface. They release toxins that penetrate the outer layer of the root, triggering an inflammatory response that causes your gums to pull away from the tooth and the underlying bone to break down. Root planing removes that contaminated layer entirely, giving your body a clean surface to work with. Over the following weeks, your gum tissue gradually tightens around the tooth and the pocket depth shrinks.
Clinical research shows measurable results. In teeth with horizontal bone loss (the most common pattern), pocket depth decreased by an average of 1.1 millimeters after treatment. Teeth with vertical bone loss saw a reduction of about 0.7 millimeters. Those numbers may sound small, but even a 1-millimeter change can move a pocket from the “can’t be cleaned at home” range back into manageable territory. Improvements were significant at both three and six months after treatment.
What Recovery Feels Like
Most people experience some tenderness and sensitivity after the procedure, particularly to hot, cold, and sweet foods. This is normal and actually a sign that things are healing. As your gums shrink back to a healthier size, more of the tooth root becomes temporarily exposed, which is what causes the sensitivity. For most people, this resolves within a few weeks.
Over-the-counter pain relievers are usually enough to manage any discomfort. A few practical tips for the healing period:
- Use sensitivity toothpaste. Brush two to three times daily with a formula designed for sensitive teeth. Avoid whitening toothpastes or anything with baking soda, which can make sensitivity worse.
- Don’t smoke for at least 48 hours. Tobacco significantly delays gum healing and increases the risk of the treatment not working as well.
- Try a fluoride rinse. This can help reduce sensitivity and protect exposed root surfaces during healing.
If sensitivity persists or becomes severe after several weeks, your dentist can apply a professional desensitizing treatment directly to the affected areas.
What Happens After Treatment
Root planing isn’t a one-and-done fix. Gum disease is a chronic condition, and once you’ve had it, you’re at higher risk of it returning. The American Academy of Periodontology recommends that people with a history of periodontitis come in for periodontal maintenance every three months, or four times per year. These visits are more thorough than a standard cleaning and focus on monitoring pocket depths and catching any signs of recurrence early.
Your provider will typically schedule a follow-up evaluation four to six weeks after the initial treatment to check how your gums have responded. If pockets have shrunk to a manageable depth, ongoing maintenance and good home care may be all you need. If deep pockets remain, particularly anything over 5 millimeters, your dentist may recommend a surgical option like flap surgery, where the gum is folded back to allow more direct access to the root and bone.
Cost and Insurance Coverage
Root planing is priced per quadrant of your mouth. The national average runs about $242 per quadrant, with costs ranging from $185 to $444 depending on your location and provider. If all four quadrants need treatment, you’re looking at roughly $740 to $1,776 for the full mouth.
Because root planing is a medically necessary treatment for diagnosed gum disease (not a cosmetic procedure), dental insurance typically covers around 50% of the cost. Your out-of-pocket share will depend on your specific plan, your deductible, and any annual maximums. If you need treatment in multiple quadrants, some offices will spread the visits across two calendar years to maximize your insurance benefits.