Re: Can a damaged nerve recover and repair itself?
When a crack is present in a tooth biting down (especially on something hard/crunchy) will force the crack open, kinda like splitting a log. When the crack opens you feel the sensation (shock). Ultimately, however, microscopic bacteria leak into the crack and can affect the nerve. Most likely, your dentist will do vitality test prior to doing a root canal. A lot of times cracked teeth just need to get crowned.