4 doctors weighed in:

Does biting your fingernails push your teeth out of shape?

4 doctors weighed in
Dr. Daniel Wolter
Dentistry
1 doctor agrees

In brief: Probably Not

In order to move teeth, you need a continuously applied pressure.
Biting your nails is intermittent and not continuous. Also, the pressure moves around from area to area, so there wouldn't be a force pushing in a specific direction. So, teeth won't move. However, nail biting can chip and fracture your teeth, especially the front ones along the thin cutting edges. It's also not a very clean habit.

In brief: Probably Not

In order to move teeth, you need a continuously applied pressure.
Biting your nails is intermittent and not continuous. Also, the pressure moves around from area to area, so there wouldn't be a force pushing in a specific direction. So, teeth won't move. However, nail biting can chip and fracture your teeth, especially the front ones along the thin cutting edges. It's also not a very clean habit.
Dr. Daniel Wolter
Dr. Daniel Wolter
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Dr. Philip T. Reynolds
General Practice

In brief: No

Tooth movement requires normal eruptive forces, constant directed force, traumatic sudden force or disease.
Biting fingernails does not fall into one of these categories but it does fall into the category of unhealthy habits that can lead to fungal infections, unsightly nail beds or chipped teeth.

In brief: No

Tooth movement requires normal eruptive forces, constant directed force, traumatic sudden force or disease.
Biting fingernails does not fall into one of these categories but it does fall into the category of unhealthy habits that can lead to fungal infections, unsightly nail beds or chipped teeth.
Dr. Philip T. Reynolds
Dr. Philip T. Reynolds
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Dr. Jared Plitt
Dentistry

In brief: No

To move teeth you usually need to keep continuous pressure on the teeth for hours at a time.
You can certainly chip the edges of your front teeth, though, so it is still a good habit to give up.

In brief: No

To move teeth you usually need to keep continuous pressure on the teeth for hours at a time.
You can certainly chip the edges of your front teeth, though, so it is still a good habit to give up.
Dr. Jared Plitt
Dr. Jared Plitt
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