Top 10 DIY Teeth Hacks You Should Never Try

How we ranked these hacks

Hacks are ranked by how serious and how permanent the harm can be if they go wrong, with the most dangerous first. Three questions drive the order. Can it cause lasting loss of a tooth, enamel or bone? How likely is harm for an ordinary person following the video? And is there a safe alternative that gets a similar result? This is an editorial ranking based on NHS and professional guidance, not a record of injuries, and it makes no claim about how common any hack is. Where evidence is limited we say so.

Why DIY dentistry goes wrong

Teeth look simple, but they sit in bone and gum that respond to small forces and to infection. Orthodontists and dentists are trained to check the health of the gums and the roots before changing anything, to use materials made for the mouth, and to see problems early. A home hack skips all of this. Enamel does not grow back once removed, gum and bone lost through infection or pressure do not regenerate on their own, and some materials are toxic or cannot be cleaned from the mouth. Many people also feel pressure from social media to fix something quickly, so it helps to know that most dental concerns have a safe route and that cost or waiting should never push you towards one that harms you.

1. DIY gap bands and rubber bands

Videos show people tying a small elastic band around two front teeth to close a gap. It looks like it works because the teeth move together, but the band can slide up the tooth towards the root and under the gum. Once it is out of sight, it cuts into the supporting tissue, causes infection and bone loss, and teeth can become loose and sometimes be lost. Dental professionals report cases where bands have to be surgically removed. A gap is not an emergency, and there are safe ways to close it, including bonding, braces or aligners after assessment. Watch out for any hack that uses household bands, thread or floss around teeth, for gums that become sore or swollen after a band, and for a band you cannot see or feel. Seek urgent help if one has gone out of sight.

2. Homemade braces from wire, paper clips or fishing line

Some videos show braces made from wire, paper clips, beads or fishing line stuck to the teeth with household adhesive. These apply uncontrolled forces, which can tilt teeth, damage roots and push them in unexpected directions. The materials can cut the lips and cheeks, trap plaque and cause gum disease, and pieces can be swallowed or inhaled. Adhesives not designed for teeth can be toxic. A proper orthodontic plan uses controlled forces, checks the roots on an X-ray where needed, and is overseen by a registered clinician. Our guides on DIY aligner brands and treatment abroad explain the regulated alternatives. Watch out for kits sold with no assessment, for teeth that feel loose or move in the wrong direction, and for any advice to leave a device in place when it hurts.

3. Filing teeth with a nail file

Filing is promoted to even out edges, shorten points or reshape a chipped tooth. Enamel is the hard outer layer and is only around a couple of millimetres thick at most, and once filed away it never returns. Removing it exposes the softer dentine beneath, which causes sensitivity, can discolour the tooth and makes decay more likely. Uneven filing can also change the way teeth bite together and strain the jaw. Dentists do shape teeth in a controlled way, for example with contouring or bonding, after checking that there is enough enamel. If an edge is sharp, a dentist can smooth it safely. Watch out for any video that treats enamel as renewable, for filing to close or open gaps, and for sensitivity afterwards, which suggests too much has been removed.

4. Superglue or craft glue on teeth

People post videos of gluing a broken tooth, crown or fake tooth back in place with household adhesive. These glues are not made for the mouth, can contain chemicals that are harmful if swallowed, and can bond to the tissue. They also lock the tooth in the wrong position and seal dirt and bacteria beneath, so a dentist may be unable to rebuild or reattach the tooth properly. Over-the-counter dental repair kits made for the purpose are a short-term measure only. If a crown or tooth comes out, keep it safe, avoid chewing on that side and book an emergency or urgent dental appointment. Watch out for gluing anything permanently, for swallowing glue, for using it on children, and for delaying treatment because the repair seems to hold.

5. Pulling a wobbly adult tooth

Adults sometimes try to pull or wiggle a loose tooth out themselves, copying what happens with baby teeth. A loose adult tooth is a sign that something is wrong, such as gum disease, injury or infection, and pulling it can cause heavy bleeding, break the root, spread infection and damage nearby teeth and bone. The tooth may also be savable if it is seen promptly, for example after a knock. Baby teeth that are ready to come out are different, and a child can wiggle a very loose one gently, but a tooth that is not loose should not be forced. Watch out for pulling any adult tooth, for pain or swelling around a loose tooth, and for bleeding that does not stop. See a dentist urgently, and use emergency care if bleeding is heavy or there is swelling affecting breathing.

6. Cutting or bending braces wire

A poking wire is uncomfortable, and videos show people clipping it with nail clippers or bending it back with tweezers. Home tools can break the wire into sharp pieces, damage the brackets, and leave small fragments that can be swallowed or inhaled. A wire adjusted incorrectly can also change the forces on the teeth and set treatment back. The safe approach is to cover the end with orthodontic wax, rinse with warm salt water if the cheek is sore and call the practice, which can usually see you quickly for a small repair. Our emergency guides explain which problems are urgent. Watch out for cutting wire, for using superglue on brackets, for removing a bracket yourself, and for leaving a sharp wire in place for days.

7. Scraping tartar with metal tools

Plaque that is left on the teeth hardens into tartar, and videos show people scraping it off with dental picks or metal scrapers bought online. Tartar forms above and below the gum line, and it is hard to see where to stop. Scratching enamel makes it rougher, which attracts more plaque, and slipping can injure the gums or cut the tongue. Removing tartar below the gum is a skilled job for a hygienist or dentist who can check for gum disease. A professional scale and polish is quick and safe. Our guides on bleeding gums and cleaning explain what you can do at home. Watch out for sharp tools in the mouth, for gums that bleed more afterwards, and for chalky rough patches on the teeth that appear after scraping.

8. Aspirin on the gum for toothache

Placing an aspirin tablet against the gum next to a painful tooth is an old remedy that is still repeated. Aspirin is an acid, and holding it against the gum can cause a painful chemical burn to the soft tissue without treating the cause of the pain. The NHS advises taking painkillers by mouth as directed on the pack, and checking that they are suitable for you. Toothache usually points to decay, infection or a cracked tooth that needs dental treatment, and swelling, fever or difficulty swallowing need urgent attention. Watch out for placing any tablet or acid on the gum, for giving aspirin to children under 16 because of a risk of a rare but serious illness, and for assuming pain relief means the problem has gone.

9. Neat peroxide or bleach on teeth

Some videos use undiluted hydrogen peroxide, household bleach or products meant for hair or cleaning to whiten teeth. These can burn the gums, lips and tongue, cause severe sensitivity and are dangerous to swallow. In the UK, whitening is regulated: products sold to the public may contain no more than 0.1 per cent hydrogen peroxide, and stronger products may be supplied only to registered dentists, who can protect the gums and check the teeth first. Our whitening guides explain the safe options. Watch out for any cleaning product used in the mouth, for stronger-than-legal gels imported from abroad, and for burns or white patches on the gum, which should be seen promptly.

10. Long-term DIY filling and repair kits

Pharmacy repair kits for lost fillings or crowns are designed as temporary measures, and used for a few days they can protect a tooth until an appointment. Problems arise when people keep them in for weeks or use them to fill a cavity to avoid the dentist. Decay continues underneath the material, the nerve can become infected and a small repair can become a root canal treatment or an extraction. These kits cannot match the bite or seal the tooth. They rank last because they are the least harmful if used correctly, but only if followed by proper care. Watch out for leaving a temporary repair for weeks, for pain or swelling beneath it, and for trying to build up a broken tooth with craft materials.

What to do instead

If you are unhappy with your smile, start with a dentist or orthodontist, who can explain what is possible and what the options cost. Many concerns, such as small gaps, chips, crowding and stained teeth, have simple and well-tested solutions. If a tooth is broken, painful or loose, book an urgent dental appointment through your dentist or NHS 111, which can direct you to emergency dental care. If cost is a worry, ask about payment plans, phased treatment and NHS eligibility, rather than turning to a hack that could make things much worse.

How to spot a risky dental video

Treat a video with caution if it promises a result in minutes, shows no dental professional, sells a product, uses household items in the mouth, asks you to ignore pain or says dentists do not want you to know. Look for a named, registered clinician and check the register of the General Dental Council. If a trend claims to replace braces, whitening or fillings, check it against NHS and professional sources. Our guide on spotting dental influencer advertising explains how sponsored claims are presented, and our methodology page explains how we choose sources.

If you have already tried a hack

Do not be embarrassed, because dental professionals see the results of DIY attempts regularly and would much rather help early. Stop the hack, keep the area clean with gentle brushing and warm salt-water rinses if the gum is sore, and book a dental appointment, explaining exactly what you used and for how long. Bring any packaging or the device itself if you can. Urgent help is needed if a band or object has gone out of sight, if you have swelling, a bad taste, fever, bleeding that will not stop, or difficulty swallowing or breathing. Early treatment often prevents a minor injury turning into a major one, and being honest about what you did helps the clinician choose the right care.

A note for parents and carers

Young people are the main audience for viral teeth content, and they may try hacks in secret because they are worried about cost, waiting lists or being teased. Talk openly about what they have seen, explain that teeth and gums can be harmed permanently, and make it easy to ask for help. Check what a child is ordering online, especially kits, glues and tools. If a child is unhappy with their teeth, an orthodontic assessment can explain what is possible and whether NHS treatment is available, and a dentist can advise on minor cosmetic concerns. Encourage them to bring any worries to a clinician rather than trying something from a video.

Safe fixes for the problems hacks try to solve

Most hacks target a few common wishes, and each has a professional answer. Small gaps and chips can be repaired with bonding, which adds tooth-coloured material without cutting the tooth much. Crooked teeth can be moved with braces or clear aligners under the supervision of a registered clinician. Stains and dullness respond to a scale and polish or supervised whitening. Sharp edges can be smoothed in minutes by a dentist. Loose crowns and fillings can usually be replaced or re-cemented at an urgent appointment. Ask about costs and payment options first, because knowing the price removes much of the pressure to try something risky.

Key takeaways

The most dangerous DIY hacks are those that put pressure or sharp objects on the teeth and gums, such as rubber bands, homemade braces and filing. Adhesives, acids and bleaches do not belong in the mouth. For almost every concern there is a safe, professionally supervised route. This is general information, not personal medical advice, so speak to a dentist or orthodontist, and seek urgent care for pain, swelling or bleeding that does not stop.

Useful related pages

This guide is for general information only. It is not a diagnosis, treatment plan, or substitute for advice from a registered dentist or orthodontist.