More than half of dental patients are unhappy with the colour of their teeth, with whitening the treatment they want most. Yet many follow everyday advice that, when done incorrectly, can wear away enamel, the white layer that gives teeth their colour in the first place.
Arif Al-Suwaidi, co-founder and CEO of Zental dental clinic, has highlighted five whitening habits that can leave teeth looking more yellow when done incorrectly, with a dentist’s tip for each.
Whitening toothpaste
Whitening toothpaste scrubs stains from the surface; it does not bleach the tooth. Toothpastes are scored for roughness out of 250, and whitening varieties often score above 200, making them up to six times harsher than a gentle paste. Despite this, 17.6 million Brits use one twice a day. Al-Suwaidi’s tip is to buy two tubes: use fluoride toothpaste morning and night, and whitening toothpaste on Sundays only. If the roughness score is not listed on the box, he advises assuming it is high and not buying it.
Antibacterial mouthwash
Strong mouthwash, the kind dentists prescribe for sore gums, can safely be used for two weeks only. Beyond that, it can cause brown staining on the front teeth, with 56% of users showing visible stains by six months. Yet 1 in 4 adults rinse with some kind of strong mouthwash every day. The recommended fix is to put an end date in your phone when you open the bottle and bin it then. For daily use, choose a fluoride mouthwash with no chlorhexidine.
Vaping
Vapes promise “no yellow teeth”, and this marketing claim is a major reason three million Brits have switched from cigarettes. Yet studies show sweet-flavoured vapour leaves four times more bacteria on the tooth and softens enamel by up to 27%, meaning teeth pick up colour from everything else consumed. The tip here is to swish a mouthful of water after every vaping session, wait 30 minutes before brushing, and book a hygienist appointment every four months rather than every six.
Dry mouth
Saliva is nature’s whitening product, washing colour from the teeth before it settles. More than 400 everyday medicines can dry it up, increasing dry mouth from 17% of people taking none to 67% of those taking seven or more. Despite this, 1 in 4 adults has dry mouth, and most never mention it to a dentist. Chewing sugar-free gum for 10 minutes after every meal is advised, and anyone taking three or more daily medicines should ask their pharmacist for a free medicines review and specifically mention dry mouth.
Al-Suwaidi said: “The question I get is always which product to buy next. It is the wrong question. Nobody asks how to properly use what you already have at home. For example, chlorhexidine is a two-week prescription, and I see people on it for years. Whitening paste is a once-a-week product, and it is sitting on the sink being used twice a day. None of these boxes carry a stop date, so people assume there is not one. But there most times is.”
Dentists emphasise that professional guidance and measured use of everyday products matter more than chasing the next marketed solution, and patients concerned about yellowing are advised to discuss their habits openly during routine check-ups rather than relying solely on over-the-counter claims.