It’s been estimated that about half of all humans bite their nails. At ten fingernails per human (and maybe some toenails thrown in for good measure), that adds up to billions of fingernails that are chewed on everyday.
Fingernail biting has been linked to genetics and occurs more often in females than males.
Our teeth can do many amazing things, like helping us speak, making us look more attractive than we really are, and allowing us to chew a variety of healthy foods. One thing that teeth aren’t good for though is biting our nails!
In fact, biting your nails can actually cause harm to your teeth and other structures inside of your mouth. Here’s a breakdown of some of the negative effects that biting your nails can have on your oral health.
1– Biting your nails can cause your teeth to get chipped. This is definitely the biggest reason to not bite your nails. Chewing on hard fingernails can take its toll on your teeth. Sometimes when bite through a nail, your teeth hit together pretty hard, which could chip a tooth.
Repeated flexing of your teeth’s enamel occurs when you bite your nails and can cause the enamel to fracture or chip.
For most people, chipping a tooth is the only negative effect that biting your nails might have on your teeth. In fact, the book Pediatric Dentistry by Pinkham states:
There is no evidence that nail biting can cause…dental change other than minor enamel fractures.
However, various studies have shown that nail biting can cause other oral problems. Keep in mind that some of the following negative effects are very rare and won’t always occur with everyone, so you might want to take them with a grain of salt!
2 – Biting your nails can cause a diastama — a gap between your two front teeth. If the nail biting habit begins when the child is very young, it has been reported to cause a gap between teeth. While this can occur, it probably won’t unless someone is constantly shoving their nail up between their teeth.
3 – Nail biting can cause the roots of your teeth to become weaker. Nail biting during orthodontic treatment (braces) has been shown to cause root resorption, which is when parts of the roots of your teeth get dissolved by the bone surrounding them. This causes the roots of the teeth to become weaker. Here’s one study and another one that explain this phenomenon.
4 – Biting your nails can cause you to lose your teeth. This study claims that biting your nails can cause you to lose your teeth. We definitely would need more studies to be done in order to verify this.
5 – Biting your nails can cause TMJ problems. This study tells how biting your nails can cause disk displacement in the temporomandibular joint. If you have pain in your TMJ, perhaps it is being caused by your fingernail biting habit.
6 – Biting your fingernails can cause gingivitis. This case report details the story of a young child that bit his fingernails and then shoved them up between his gums and teeth. You would think that this would be pretty rare but it might not be as uncommon as you’d think. It does go to show that kids can think of anything to do with their fingernails after they’ve chewed them off of their fingers.
source: oralanswers.com website
For more articles on dental health, see our main blog page.
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We are open Monday through Saturday and offer appointments as early as 7:30am
The first checkup is recommended at the first birthday. Our patients generally stay with us until they graduate high school. We are proud to say we are now seeing the children of former patients, as the practice was established in 1973 by Dr. Robert Harmon.
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