Should you use a tongue scraper if you have dry mouth?

Saliva does a lot of quiet cleaning. It washes food and dead cells off the tongue, carries bacteria away and helps keep their numbers in check. Cleveland Clinic notes that when you do not have enough saliva, bad breath often follows. With less flow, the film on the tongue thickens, often looking white or yellow, and the bacteria in it have more to feed on.

The National Institute of Dental and Craniofacial Research lists bad breath among dry mouth symptoms, along with a sticky feeling, trouble chewing, swallowing, tasting or speaking, burning, cracked lips, mouth sores, repeated infections and a higher risk of tooth decay.

• Medicines. NIDCR says hundreds of medicines can reduce saliva, including some for high blood pressure, depression and bladder control.
• Medical conditions such as Sjögren's disease, diabetes and HIV.
• Cancer treatment. Radiation to the head and neck can damage salivary glands, and chemotherapy can thicken saliva.
• Everyday factors like mouth breathing, a blocked nose, caffeine, alcohol and tobacco.

NIDCR is clear that dry mouth is not a normal part of aging, so it is worth finding the cause.

1. Moisten first. Sip water and swish it over your tongue before scraping. A wet surface lets the edge glide instead of drag.
2. Use the lightest pressure that still lifts coating, and stick to two or three passes.
3. Rinse the scraper under water between passes.
4. Finish with water or an alcohol-free rinse. Alcohol-based mouthwash can make dryness worse.
5. Skip a day if it stings. If the tongue feels raw, brush it gently with a soft toothbrush instead until it settles.

A smooth, rounded edge is kinder to a dry tongue than a sharp or serrated one. If you are unsure about technique, see our step-by-step guide.

The scraper deals with the coating. These steps, drawn from NIDCR and NHS advice, deal with the dryness:

• Sip water often through the day and keep water by your bed at night.
• Chew sugar-free gum or suck sugar-free sweets to stimulate saliva. Xylitol products may also help prevent cavities.
• Limit caffeine, alcohol and fizzy drinks, and do not smoke.
• Use a humidifier at night if the air is dry.
• Ask a pharmacist about saliva substitute gels, sprays or lozenges.
• Brush twice a day with fluoride toothpaste, because dry mouth raises your risk of decay.
• Do not stop a prescribed medicine on your own, even if you think it is the cause. Ask the prescriber.

See your dentist or doctor if your mouth stays dry for more than a few weeks despite home care, if dryness makes eating or talking hard, or if you think a medicine is causing it. NHS guidance also flags taste changes that do not go away, a mouth that is painful, red, swollen or bleeding, sore white patches, and dryness alongside symptoms like dry eyes or needing to pee a lot. Your provider may review your medicines, order tests or suggest a saliva substitute.