Tongue Scraping and Oral Care in Ayurveda: What the Texts and Research Say

Tongue scraping, called jihva nirlekhana in Sanskrit, is the habit of gently drawing a smooth scraper along the tongue each morning to remove the coating that builds up overnight. It is one of the oral care steps in the Ayurvedic daily routine, alongside cleaning the teeth and rinsing the mouth. The Ashtanga Hridayam lists it in its morning sequence, and tradition holds that it keeps the mouth fresh and the sense of taste clear.

Modern research on tongue scraping is limited to small studies. They suggest that scraping can reduce the visible coating and may help a little with bad breath, but it is no substitute for brushing, cleaning between the teeth and regular dental check-ups. This page covers what the texts describe, how people do it today, and where care is needed.

What the texts describe

The classical works treat mouth care as a morning duty. The Ashtanga Hridayam describes danta dhavana, cleaning the teeth, using a fresh twig from a tree whose bark is described as bitter, astringent or pungent in taste, with neem and similar trees named in the tradition. The twig is chewed until it frays into a soft brush and then used on the teeth and gums. After this the text describes jihva nirlekhana, scraping the tongue, with a scraper described as soft, smooth and not sharp enough to injure. The mouth is then rinsed.

The tradition connects these steps with kapha, the dosha linked with moisture and coating, which is said to gather during the night. Clearing the tongue and mouth in the morning is described as a way of removing that gathered quality and clearing the senses. In Ayurveda the tongue is also read by practitioners as one sign among many in an examination, and coating on the tongue is sometimes linked in the tradition with ama, a sticky residue of incomplete digestion. These are traditional ideas and not measured medical facts.

What modern research says

The studies are mostly small and short.

• Several small trials have compared tongue scraping and tongue brushing and generally found that both reduce tongue coating, with scrapers sometimes slightly more effective. The effect on bad breath is modest and varies between studies.
• Most bad breath comes from bacteria in the mouth, and often from gum disease, so good brushing and gum care come first. Persistent bad breath is a reason to see a dentist.
• There is no strong evidence that scraping improves general health, digestion or immunity. Claims online about “removing toxins” are not supported by research.

Dental bodies recommend brushing twice a day with a fluoride toothpaste and cleaning between the teeth daily. Chewing twigs is traditional and widely used in some countries, and some studies have looked at it, but fluoride toothpaste has far stronger evidence for protecting teeth, so most dentists advise using it alongside or instead of twigs.

How people do it today

This is a general wellbeing habit, not a treatment, and there is no required technique. A common approach looks like this:

1. After waking and drinking a little water, stand in front of a mirror and put out your tongue.
2. Hold a clean, smooth scraper, which is usually a thin curved strip of stainless steel or copper, by its two ends.
3. Place it towards the back of the tongue, as far as is comfortable without gagging, and draw it forward with light pressure.
4. Rinse the scraper under running water and repeat a few times, then rinse your mouth.
5. Wash and dry the scraper after use, and replace it if it becomes bent or rough.

You are aiming for a clean tongue and not a raw one. If the tongue looks red or feels sore afterwards, you are pressing too hard.

Oral care in a modern routine

The traditional order works well with ordinary dental advice. Many people scrape, then brush with a fluoride toothpaste, clean between the teeth with floss or small brushes, and rinse. Oil is covered in the separate guide to oil pulling, which has its own safety notes. A twig is optional.

The classical texts also give some conduct advice around eating, such as rinsing the mouth after meals. That is consistent with modern advice to rinse and, ideally, brush after meals, though many dentists suggest waiting some time after acidic food or drink before brushing.

Safety notes

• Gagging. If the gag reflex is strong, start near the front of the tongue and move back slowly. Do not push.
• Bleeding or pain. If scraping causes bleeding or sores, stop. Tongue scrapers can cause small cuts if used with force.
• Persistent coating or colour change. A coating that does not go away, white patches that cannot be wiped off, sores that do not heal in about two weeks, or a lump or ulcer on the tongue need medical or dental attention. Do not treat them with scraping.
• Dry mouth. Some medicines cause a dry mouth and a coated tongue. Speak to a doctor or dentist.
• Children. Young children should not use metal scrapers on their own. Ask a dentist for child-specific advice.
• Hygiene. Keep the scraper clean. A dirty tool is worse than none.
• Twigs. Use only fresh twigs from plants you know are safe, because some plants are toxic or can splinter. Do not chew a twig if you have a gum condition without advice from a dentist.
• Pregnancy. Morning sickness can make scraping hard to tolerate. A soft toothbrush on the tongue may be easier.

How it fits the day

In the classical order of the day, tongue scraping follows the natural urges and comes just before rinsing, oiling and bathing. You can read how the rest follows in the dinacharya overview, and the step before it in waking and Brahma muhurta. If you are curious about how the tradition describes digestion and its residue, the body section is where such topics are covered.

This is an account of a tradition and not medical or dental advice. See our medical disclaimer, and see a dentist or doctor for any concern about your mouth or tongue.

Frequently asked questions