A scale and polish is a routine clean by a dentist or hygienist. This guide explains what it does, what the evidence says and how it differs from deep cleaning.
Key points
- Scaling removes plaque and hard deposits (calculus or tartar) from the teeth, and polishing smooths the surfaces and removes stains.
- It is usually done without anaesthetic, takes a short time and should not hurt, although sensitive teeth may feel it.
- A scale and polish is not the same as deep cleaning, which treats pockets and deposits below the gum in people with gum disease.3
- The right interval depends on your risk, and many people are advised every six to twelve months.
- Home cleaning is what protects your gums. The NHS advises brushing at least twice a day and cleaning between the teeth every day.2
"Scaling" is the removal of hard deposits from the teeth, and "polishing" smooths the surfaces afterwards. It is one of the most common dental appointments, and many people have it every six months or a year. It is worth knowing what it does and what it does not do.
What happens at a scale and polish
- Examination. The dentist or hygienist looks at your teeth and gums.
- Scaling. Plaque and hard deposits (calculus or tartar) are removed from the teeth, above and just below the gum edge, using hand instruments or an ultrasonic scaler that vibrates and sprays water.
- Polishing. A rotating cup with a gritty paste smooths the tooth surfaces and removes stains.
- Advice. You are shown how to clean better, including between the teeth.
It is usually done without anaesthetic, takes a short time and should not hurt, although sensitive teeth and inflamed gums can feel tender.
What it does and does not do
A scale and polish removes hard deposits and stains, which you cannot remove at home. It makes teeth feel smooth and look cleaner. But the evidence for what it does for gum health is more limited than many people assume. A Cochrane review found that in healthy adults without severe gum disease, routine scale and polish made little or no difference to gingivitis over two to three years, though it reduced calculus,1 and the benefits for people with gum disease were not studied.1 That does not mean it is useless, because it removes deposits that hold plaque, but it shows that home cleaning does most of the work.
Scale and polish or deep cleaning?
These are not the same.
| Scale and polish | Deep cleaning (scaling and root planing) | |
|---|---|---|
| What it treats | Hard deposits and stains above and at the gum edge | Plaque and deposits below the gum, on the roots |
| Who it is for | People with healthy gums or mild gingivitis | People with gum pockets and loss of support |
| Anaesthetic | Not usually needed | Often local anaesthetic |
| Visits | One | One or several |
Deep cleaning is used for teeth with loss of support or pockets, and not for teeth with healthy gums.3 The European guideline strongly recommends it to reduce pocket depth, gum inflammation and the number of diseased sites.3 See our page on deep cleaning.
How often do you need one?
There is no single answer. Many people are advised every six to twelve months, but the right interval depends on how quickly deposits form, your gum health and your risk factors. People with a history of gum disease, smokers, people with type 2 diabetes and people who are pregnant may need more frequent visits.2 Your dentist can advise.
Doing your part at home
The NHS advises brushing with fluoride toothpaste at least twice a day, and cleaning between your teeth every day.2 In a Cochrane review of 35 trials, floss may reduce gingivitis, and interdental brushes may be more effective than floss, but the evidence is low-certainty and the effects may be small.4 A professional clean cannot make up for plaque left on the teeth every day.
After the appointment
- Your gums may feel tender or bleed a little for a day or two.
- Teeth may feel sensitive to hot and cold for a short time.
- Avoid very hot or hard food if the gums are sore.
- Rinse with warm salt water if it helps.
- Keep cleaning gently.
If bleeding or soreness continues, tell your dentist.
Stains and whitening
Polishing removes surface stains from tea, coffee, tobacco and food. It does not change the natural colour of the teeth. If you want your teeth to be whiter, ask about whitening, which is a separate treatment. See our page on yellow teeth and our guides to types of teeth whitening.
When scaling is a sign of something more
If you have bleeding gums, bad breath, loose teeth or shrinking gums, the dentist will check for gum disease. Our guides to gingivitis and periodontitis explain the stages.
What it feels like, and how to make it comfortable
Most people feel vibration, a little pressure and the cool spray of water. Sensitive teeth may twinge, and inflamed gums can feel tender or bleed a little, particularly if cleaning has been neglected. If you are anxious or have sensitive teeth, tell the hygienist before you start. They can use gentler settings, work on one area at a time, apply a numbing gel or give you breaks. You can raise a hand at any time.
It helps to brush and clean between your teeth beforehand, which removes loose plaque and makes the visit quicker. Afterwards, the teeth often feel smooth and clean, and any sensitivity usually settles within a day or two.
Ultrasonic and hand scaling
Hygienists use two kinds of instrument. An ultrasonic scaler uses vibration and a flow of water to break up deposits, which is quick and comfortable for most people. Hand instruments are small, shaped tools that remove deposits by scraping, and they are used for fine detail and for areas the ultrasonic tip cannot reach. Many visits use both.
Neither weakens the teeth. They remove deposits that were sitting on the enamel, not the tooth itself. If your teeth feel different afterwards, it is usually because the deposits that were keeping gaps filled have gone.
Keeping your teeth clean for longer between visits
Hard deposits form when plaque is left on the teeth and hardens with minerals from saliva. You cannot stop all of this, but you can slow it down.
- Brush twice a day for two minutes, with attention to the inner surfaces of the lower front teeth.2
- Clean between your teeth every day.
- Clean along the gum line, where plaque collects.
- Limit sugary snacks and drinks, which feed plaque bacteria.
- Do not smoke, since it adds stains and affects gum health.
- Keep your appointments, so deposits are removed before they become hard to clear.
If you form deposits quickly, ask your dentist whether shorter intervals would help, and whether a different brushing or interdental technique could reduce them.
Myths and facts
Myth: scaling weakens or loosens the teeth. Scaling removes deposits, not the tooth. Teeth can feel looser for a short time if gums were very inflamed, because the swelling goes down.
Myth: scaling creates gaps between the teeth. The gaps were hidden by the deposits and swelling, and become visible once they are removed.
Myth: if I scale regularly, I do not need to brush. Home cleaning is what protects your gums.
Fact: it is a useful part of a routine, not the whole routine.
Who benefits most from regular scaling
- People who form hard deposits quickly, particularly behind the lower front teeth, where saliva ducts open.
- Smokers and people who drink a lot of tea or coffee, who collect stains.
- People with crowded teeth, bridges or braces, where plaque is harder to remove.
- People with a history of gum disease, who need supportive care to keep the result.3
- People with type 2 diabetes or who are pregnant, for whom the NHS advises regular check-ups.2
Questions to ask your dentist
- Do I need scaling only, or something deeper?
- How often should I come, and why?
- What can I do at home to reduce deposits?
- Are there signs of gum disease that I should watch?
- Would a different brushing or interdental technique help?
Frequently asked questions
Does scaling hurt?
Usually not much. Sensitive teeth and inflamed gums can feel tender, and a local anaesthetic can be used if needed.
Will it whiten my teeth?
It removes surface stains but does not change the natural colour.
Why do my gums bleed after scaling?
Inflamed gums bleed easily when deposits are removed. It should settle within a day or two with gentle cleaning.
Can I eat straight afterwards?
Yes, unless you have had anaesthetic. Take care with very hot or hard food if your gums are sore.
Can scaling damage enamel?
Done properly, it removes deposits, not enamel. Tell the clinician if anything feels uncomfortable.
Can I have it during pregnancy?
Routine cleaning is usually fine, and the NHS advises regular check-ups for people who are pregnant.2 Tell your dentist you are pregnant.
Does scaling remove stains?
The polishing step removes surface stains from tea, coffee, tobacco and food. It does not change the natural colour of the tooth, so if you want a lighter shade, ask your dentist about whitening.
Can I eat straight after a scale and polish?
Yes, usually. If your gums are sore or your teeth are sensitive, choose softer foods and avoid very hot or cold items for a day.
About the author
Dr Anupam Sinha, BDS, MDS – Orthodontics. BDS (2002), KLE Vishwanath Katti Institute of Dental Sciences, Belgaum. MDS in Orthodontics (2006), SDM College of Dental Sciences, Dharwad. His thesis work won a national research award in 2005, and he holds a certification in aesthetic dentistry. He sees patients at Orion Dental Clinic in Greater Kailash 1, South Delhi. Read the full profile of Dr Anupam Sinha.
Sources
- Lamont T, Worthington HV, Clarkson JE, Beirne PV. Routine scale and polish for periodontal health in adults. Cochrane Database of Systematic Reviews, 2018;12:CD004625. https://pubmed.ncbi.nlm.nih.gov/30590875/
- NHS website. Gum disease (patient information). Page review date 20 April 2026. https://www.nhs.uk/conditions/gum-disease/
- Sanz M, Herrera D, Kebschull M, Chapple I, Jepsen S, Beglundh T, Sculean A, Tonetti MS, on behalf of the EFP Workshop Participants and Methodological Consultants. Treatment of stage I-III periodontitis: the EFP S3 level clinical practice guideline. Journal of Clinical Periodontology, 2020;47(Suppl 22):4-60. https://pubmed.ncbi.nlm.nih.gov/32383274/
- Worthington HV, MacDonald L, Poklepovic Pericic T, Sambunjak D, Johnson TM, Imai P, Clarkson JE. Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal diseases and dental caries. Cochrane Database of Systematic Reviews, 2019;4:CD012018. https://pubmed.ncbi.nlm.nih.gov/30968949/
Medically reviewed by Dr Anupam Sinha, BDS, MDS – Orthodontics, on . General information for patients from Orion Dental Clinic, last updated 23 October 2026. It is not advice for one person, so ask a dentist what suits you. To report an error, contact us.