A cracked tooth can often go unnoticed but will not heal itself and needs to be treated by a dentist. Sports injuries or accidents can lead to chipping or cracking of the teeth but a crack usually has a more common explanation such as:
- Teeth grinding
- Chewing hard foodstuffs
- A large filling weakening the surrounding tooth
In rare cases “a sudden temperature change can also crack a tooth” which can happen if switching suddenly from a cold drink to a hot one. Tooth sensitivity can be an indication of a cracked tooth and should be discussed with the dentist who can carry out a full examination.
Read more about cracked teeth in the article at https://www.medicalnewstoday.com/articles/322015.php