Is nail biting bad for the teeth?

Yes, it is a habit that harms the teeth. 1) The edges of the front teeth chip finely or wear down, 2) the front teeth can be pushed out of position or their alignment distorted, and 3) it puts continuous strain on the jaw joints. In growing children in particular it can affect tooth alignment and jaw development, so it is better to break the habit early. If the edges of your front teeth are already chipped or sensitive, they can be restored with resin, so we recommend an examination.