A scaling is a dental procedure that removes plaque and tartar (hardened plaque) from your teeth, both above and below the gumline. It’s one of the most common treatments for gum disease and is often paired with a second step called root planing. Together, these two procedures are sometimes called a “deep cleaning” to distinguish them from the polishing and light cleaning you get at a routine checkup.
How Scaling Works
Plaque is a sticky film of bacteria that forms on your teeth every day. When plaque stays on your teeth long enough, it hardens into tartar, which you can’t remove with a toothbrush. Tartar buildup irritates your gums, causing inflammation and eventually creating pockets between your teeth and gum tissue. The deeper those pockets get, the more bacteria collect inside them, and the cycle worsens.
During a scaling, your dentist or hygienist systematically scrapes away all plaque and tartar deposits from the tooth surfaces, working down into those pockets to clean as deep as the pocket extends. This is done with one of two types of instruments: hand scalers (small metal tools called curettes) or ultrasonic scalers that use high-frequency vibrations to break up deposits. Many practitioners use both during a single visit.
Hand instruments give the clinician more tactile feedback and tend to leave a smoother tooth surface. A study published in Cureus found that ultrasonic scaling produced roughly 77% more surface roughness on enamel compared to hand scaling. On root surfaces, ultrasonic instruments also created more roughness, though the difference was smaller and not statistically significant. In practice, most offices use ultrasonic tools for the heavy lifting and finish with hand instruments for precision.
Scaling vs. Root Planing
Scaling and root planing target different parts of the tooth. Scaling focuses on removing deposits from the visible crown and just below the gumline. Root planing goes further, smoothing the root surfaces beneath the gums so that the tissue can reattach more tightly to the tooth. Think of scaling as the removal step and root planing as the smoothing step. They’re almost always done together, which is why you’ll hear them referred to as a single procedure: scaling and root planing, or SRP.
Research on patients with pockets ranging from 3 to 7 mm deep shows that substantial pocket depth reduction occurs within about three weeks after root planing. The initial improvement comes from the gums receding slightly as swelling goes down, and the secondary improvement comes from the gum tissue actually reattaching to the smoothed root surface.
When You Need a Deep Cleaning
Your dentist measures the depth of the pockets around each tooth using a small probe. Healthy gums typically have pocket depths of 1 to 3 millimeters. When pockets reach 4 mm or deeper, that’s generally the threshold where scaling and root planing becomes the recommended treatment. Pockets at that depth trap bacteria that regular brushing and flossing can’t reach, and a standard cleaning won’t go deep enough to address the problem.
Signs that may point toward the need for scaling include gums that bleed when you brush or floss, red or swollen gum tissue, persistent bad breath, and gums that have started pulling away from your teeth. You may not notice any pain, which is part of why gum disease often goes undetected until a dental exam.
What the Procedure Feels Like
For a routine above-the-gumline scaling during a regular cleaning, most people feel only mild scraping and pressure. Deep scaling that goes below the gumline is more involved. Your dentist will typically numb the area with a local anesthetic so you don’t feel pain during the procedure. Some offices apply a topical numbing gel first to reduce discomfort from the injection itself.
Deep scaling is usually done one or two quadrants of the mouth at a time, meaning you may need two to four visits to complete the full treatment. Each visit typically takes about 45 minutes to an hour, depending on how much buildup is present and how deep the pockets are.
Recovery and Aftercare
After a deep scaling, it’s normal to experience some tooth sensitivity and gum tenderness for several days to a couple of weeks. Your gums may feel sore, and you might notice minor bleeding when brushing during the first few days. Cold and hot foods can trigger sensitivity as the gums heal and temporarily expose more of the root surface.
Sticking with soft foods for the first day or two helps. Gentle brushing with a soft-bristled toothbrush is important even while your gums are tender, since keeping the area clean supports healing. Warm salt water rinses can ease soreness. Your dentist will schedule a follow-up visit, usually four to six weeks later, to check pocket depths and see how well the gums have responded.
Maintaining results long-term matters. A 24-week clinical trial found that patients who used a powered toothbrush after scaling and root planing had significantly greater reductions in bleeding and pocket depth compared to those using a manual toothbrush. The manual toothbrush group saw bleeding levels stay close to where they were before treatment. Consistent home care is what keeps the results of scaling from being temporary.
Who May Need Antibiotics Before Scaling
Scaling can temporarily allow mouth bacteria to enter the bloodstream. For most people, the immune system handles this without issue. But certain heart conditions raise the risk of a serious infection called infective endocarditis, and the American Heart Association recommends taking antibiotics before any dental procedure that involves the gum tissue in those cases.
The specific conditions that call for pre-procedure antibiotics include:
- Prosthetic heart valves, including transcatheter-implanted valves
- Prior infective endocarditis
- Certain congenital heart defects, specifically unrepaired cyanotic defects or repaired defects with residual issues near prosthetic material
- Heart transplant with valve regurgitation from a structurally abnormal valve
People with pacemakers, coronary stents, or a history of bypass surgery do not need antibiotics before scaling. Patients with diabetes, artificial joints, organ transplants, or those on certain bone-related medications may also warrant discussion with their care team, though the recommendations are less absolute for these groups.
How Often You’ll Need It
After completing an initial round of scaling and root planing, the standard follow-up is periodontal maintenance therapy. How often you return depends on how quickly your gum disease was progressing before treatment and how well your gums respond afterward. Most patients with a history of gum disease are placed on a three- to four-month maintenance schedule rather than the typical six-month cleaning cycle. Your dentist adjusts this frequency based on pocket depth measurements and whether inflammation is returning at follow-up visits.