TikTok might be a goldmine for dance crazes and cooking hacks – but when it comes to dental DIY, it’s a dentist’s worst nightmare.
With more than half of Gen Z turning to TikTok before Google for health tips, it’s no wonder wild hacks for pearly whites have taken over our feeds.
But according to Dr Gopinder Lalia, founder and principal dentist at Lume Dental in Cheshire, some of these trends are downright dangerous.
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Dr Lalia, who’s been a dentist since 2017 and set up his boutique cosmetic clinic in January, says while most people mean well, the wrong TikTok trick could land you in the dentist’s chair for all the wrong reasons.
Here, the 31-year-old has listed six so-called smile secrets that really make dentists grind their teeth:
The nail-file smile
One of the most shocking trends found on TikTok is the so-called ‘nail-file smile’.
People are literally shaving down their teeth with emery boards or sandpaper to change the shape.
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Dentists like Dr Gopinder Lalia warn this can permanently strip away enamel, leaving teeth sensitive, decayed and even at risk of falling out.
If you’re unhappy with your tooth shape, reshaping or bonding done by a pro is far safer and actually works.
DIY whitening hacks
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TikTok is bursting with videos on homemade whitening tricks – from brushing with baking soda and lemon juice to rinsing with peroxide or even bleach.
While they might give a short-term glow, these harsh methods can wear away enamel and irritate gums, leaving teeth weaker and more sensitive.
Dr Lalia says professional whitening is the only way to get safe, long-lasting results, as reported by What’s The Jam.
Fake veneers with household glue
Some creators have filmed themselves sticking on cheap fake veneers or caps with superglue or other household adhesives.
It might look fine for a video, but these fake teeth can pop off while eating – and the glue can leak harmful chemicals into the mouth.
Real veneers should always be custom-made and fitted by a qualified dentist using safe, tested materials.
Rubber bands to close gap
Want to close a tooth gap overnight? Videos shared on the app say wrap an elastic band around your teeth and let it pull them together.
In reality, this can seriously damage your gums, roots and even jawbone – not to mention the risk of swallowing or choking on the band.
Orthodontists move teeth carefully and gradually for a reason.
If you want a quick fix, clear aligners like Invisalign are a safe bet.
DIY cavity ‘cures’
Some TikTok videos promote chewable ‘toothpaste bits’ packed with fancy ingredients like nanohydroxyapatite, claiming they can rebuild enamel and fix cavities.
But Dr Lalia says once enamel is gone, it doesn’t grow back on its own.
These products might help protect teeth between dentist visits, but they won’t replace a proper filling when decay sets in.
Exercises for grinding
Not every dental hack shared online is bad news.
Dr Lalia says face and tongue exercises to help with teeth grinding can actually help – as long as your dentist hasn’t said otherwise.
Pressing your tongue to the roof of your mouth or massaging your jaw can ease tension and protect teeth from nighttime clenching.
Just make sure to get proper advice if grinding is a big problem.
While these viral hacks might look clever on camera, Dr Lalia says real smiles need real care – not shortcuts with nail files and glue sticks.
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