If your dentist has mentioned a "deep clean", it usually means the measurements around some of your teeth showed pockets deeper than healthy gums have. Scaling and root planing cleans those pockets, working on the root surfaces below the gum line where a routine clean does not reach. It is the standard first treatment for established gum disease (periodontitis), and on average it reduces pocket depths, although how well it works varies from tooth to tooth and person to person.
A routine clean and a deep clean treat different problems
A routine scale and clean is maintenance. It removes plaque, tartar and stain from the crowns of the teeth and just under the gum edge, and it suits people whose gums are healthy or only mildly inflamed.
Scaling and root planing is treatment for disease that has already damaged the attachment between gum and tooth. Scaling removes hardened deposits and bacteria from the root surface inside the pocket. Root planing smooths that surface, which may make it harder for plaque to settle back in and gives the gum a better chance to tighten around the tooth. Our articles on bleeding gums and gum disease treatment explain how the disease gets to that point.
| Routine scale and clean | Scaling and root planing | |
|---|---|---|
| Main aim | Keep healthy gums healthy | Treat periodontitis |
| Where it works | Tooth crowns and the gum edge | Root surfaces inside the pockets |
| Numbing | Rarely needed | Local anaesthetic is common |
| Appointments | Usually one | One long visit or several shorter ones |
Pocket measurements decide if you need one
Around a healthy tooth, the gum forms a shallow collar that a fine probe dips into by roughly 1 to 3 millimetres. In periodontitis, the fibres and bone holding the tooth break down and that space deepens into a pocket. Bacteria in a deep pocket are out of reach of a toothbrush or floss, so the inflammation keeps going.
Your dentist or OHT records the depth at several points around each tooth, notes where the gums bleed, and checks X-rays for bone loss. That chart, rather than how your gums feel, is what shows whether a deep clean is needed. Gums can bleed a little with simple gingivitis, which often settles with a routine clean and better home care. Gums can also look fairly calm while deep pockets sit underneath.
What the research says about results
A 2020 systematic review prepared for the European Federation of Periodontology guideline (Suvan and colleagues, Journal of Clinical Periodontology) pooled studies of this treatment. Pockets were on average about 1.4 millimetres shallower six to eight months later, and an estimated 74% of pockets closed to a healthier depth. The same review found no meaningful difference between hand instruments and ultrasonic scalers, or between treating the whole mouth at once and treating one section at a time.
An American Dental Association review (Smiley and colleagues, Journal of the American Dental Association, 2015) found an average gain in gum attachment of about 0.5 millimetres, with moderate certainty. Averages hide a lot of variation. Deeper pockets often improve more in millimetres, but very deep pockets and the hard-to-reach roots of back teeth are less likely to resolve fully, and some need further treatment or a referral to a periodontist.
What the treatment does not do is rebuild bone that has already been lost. The aim is to bring the infection under control so the disease stops progressing.
How the appointments usually run
Most people have the area numbed with local anaesthetic, so the cleaning itself should not hurt. The clinician uses an ultrasonic scaler and fine hand instruments to work around each root inside the pocket. The mouth may be treated in sections over two or more visits, or in fewer, longer visits, depending on how much needs doing and what suits you.
Once the numbness wears off, the gums are often tender and the teeth may be sensitive to cold for a few days. As the swelling goes down, the gums can shrink back a little, so some teeth may look slightly longer or have small gaps near the gum line. This is part of healing.
Healing depends on what happens at home
Gums take several weeks to settle after treatment, and a review appointment is usually booked after that to re-measure the pockets. Your daily brushing and cleaning between the teeth, often with interdental brushes sized for your gaps, does much of the work in keeping the result.
Periodontitis is managed rather than cured. Most people who have had it move onto regular maintenance visits, often every three to four months at first, so any pockets that start to deepen again are found early. Smoking and poorly controlled diabetes both make gum disease harder to control, so support with those can help as well. Gum disease has also been linked with heart disease in research studies, which our article on heart disease and gum disease looks at in more detail.
What patients ask about deep cleaning
Does scaling and root planing hurt?
The area is usually numbed, so most people feel pressure and vibration rather than pain. Tenderness for a few days afterwards is common and usually eases with over-the-counter pain relief if you can take it.
How many appointments will I need?
It depends on how many teeth are affected. Some people are treated in one or two longer visits, others over several shorter ones. Research suggests both approaches work similarly well.
Will my gums go back to how they were?
Inflammation and bleeding often settle and pockets usually get shallower. Bone and gum that have been lost generally do not grow back with this treatment, which is why picking up gum disease early matters.
Will I need it again?
Not routinely, if maintenance visits and home care keep the gums stable. Some sites may need re-treatment if pockets deepen again.
Find out what your gums need
The only way to know if you need a deep clean is to have your gums measured. At Lumi Dental, a dentist or OHT can chart your gums and explain what the numbers mean, and you will usually receive a written treatment plan, often by email, before any treatment begins. We do not list prices for gum treatment on the blog; contact the team at Lumi Dental to book an assessment, or see our current deals page.
