This defect is very similar to the impact force when jade falls. You can take advantage of the situation, find a dentist to polish the rough surface, slightly modify the shape within a certain limit, and apply desensitizer, which is not expensive and will not exceed tens of yuan. But also let you see a relatively complete and beautiful tooth.
If you are only sensitive and have no other discomfort, such as bleeding and biting pain, you must not take anti-inflammatory drugs to prevent drug resistance.
Tooth lines are common after people chew food all the year round, so don't worry. A lot of enamel is common. The following is a photomicrograph of stained teeth. Don't worry.