A perio cleaning, short for periodontal cleaning, is a deep cleaning procedure that goes below the gumline to remove bacteria, plaque, and hardened tartar from the roots of your teeth. The clinical name is scaling and root planing. It’s different from the standard cleaning you get at a routine checkup, and it’s typically recommended when gum disease has progressed beyond what a regular cleaning can address.
How It Differs From a Regular Cleaning
A standard dental cleaning, called a prophylaxis, focuses on the visible surfaces of your teeth and just slightly below the gumline. It’s preventive maintenance for healthy gums. A perio cleaning targets the space between your gums and tooth roots, where bacteria collect in pockets that form as gum disease advances.
The key difference is depth. During a regular cleaning, your hygienist polishes and scales the crowns of your teeth. During a perio cleaning, they numb your gums with local anesthesia and work beneath the gum tissue to scrape tartar off the root surfaces, then smooth the roots so gums can reattach more easily. That smoothing step is the “root planing” part, and it’s what makes the procedure therapeutic rather than just preventive.
Why Your Dentist Recommends One
The deciding factor is usually pocket depth. Your dentist or hygienist measures the small gaps between your gums and teeth using a thin probe, recording the depth in millimeters. Healthy gums typically measure 1 to 3 mm. Once pockets reach 4 mm or deeper, bacteria can settle in places your toothbrush and floss can’t reach, and a regular cleaning can’t adequately address.
The American Academy of Periodontology classifies gum disease in stages based partly on these measurements. Stage I periodontitis involves pockets around 4 mm. Stage II reaches up to 5 mm. Stage III and beyond involves pockets of 6 mm or more, often with bone loss visible on X-rays. Scaling and root planing is the frontline treatment across these stages, aimed at halting the disease before it causes tooth loss.
Other signs that point toward a perio cleaning include gums that bleed easily, persistent bad breath, gums pulling away from the teeth, and X-rays showing bone loss around the roots.
What Happens During the Procedure
Your gums are numbed with local anesthesia first, so you shouldn’t feel pain during the cleaning itself. The procedure is usually split into two visits, with one side of the mouth treated per appointment, though some offices treat two quadrants or even the full mouth in a single session depending on severity.
Your hygienist or dentist uses two main types of instruments. Ultrasonic scalers vibrate at high frequencies to break up and flush away hardened tartar deposits below the gumline. Hand instruments called curettes are then used for more precise scraping, especially in deeper pockets or around curved root surfaces where powered tools have limited reach. Most providers use a combination of both. The ultrasonic scaler handles the bulk of the buildup quickly, while hand instruments refine the work and smooth the root surfaces.
Each appointment typically runs 45 minutes to an hour per side, though heavily affected mouths may take longer.
Recovery and What to Expect After
Some soreness and sensitivity are normal for a few days to a week afterward. Your gums may feel tender, and your teeth might be more sensitive to hot and cold temperatures, especially near the gumline. This happens because removing the tartar and smoothing the roots temporarily exposes parts of the tooth that were previously covered by inflamed tissue or buildup.
Minor bleeding when brushing is common in the first couple of days. Rinsing with warm salt water can help soothe the tissue. Most people return to normal eating within a day or two, though you may want to avoid very crunchy or spicy foods initially. Over-the-counter pain relievers are usually enough to manage any discomfort.
Over the following weeks, healthy gum tissue will begin to tighten around the teeth as inflammation resolves. Pocket depths often decrease by 1 to 2 mm after successful treatment, which is the primary goal.
What It Costs and How Insurance Handles It
Perio cleanings are billed per quadrant of the mouth (your mouth is divided into four sections). The dental codes used are D4341 for a full quadrant and D4342 for a partial quadrant where fewer teeth are involved. This means the total cost depends on how many quadrants need treatment.
Without insurance, expect to pay roughly $150 to $350 per quadrant, so a full-mouth deep cleaning can range from $600 to $1,400. Most dental insurance plans cover scaling and root planing as a medically necessary procedure, though they often require supporting documentation. If your dentist submits claims for more than two quadrants in a single visit, insurers will typically request full-mouth X-rays, a periodontal charting showing pocket depths, and a written treatment plan before approving payment. Coverage criteria vary between insurance companies, so the pocket depth threshold that triggers approval can differ from one plan to another.
Follow-Up Care
A perio cleaning isn’t a one-and-done fix. Your dentist will schedule a re-evaluation about four to six weeks after treatment to measure pocket depths again and check how your gums are healing. If pockets have improved, you’ll typically move to periodontal maintenance cleanings every three to four months rather than the standard six-month schedule. These maintenance visits are more thorough than a regular prophylaxis but less intensive than the initial deep cleaning.
If pocket depths haven’t improved enough, your dentist may recommend additional rounds of scaling and root planing or refer you to a periodontist for more advanced treatment. The long-term outcome depends heavily on home care. Consistent brushing, daily flossing, and keeping those maintenance appointments are what prevent the pockets from deepening again.