Hi...
A tooth that is fractured as a result of traumatic injuries does not grow back by itself. However, based upon the nature and extent of damage, there maybe options available to repair/reconstruct the tooth. You need to set up an appointment with your dentist for an evaluation and to discuss your options. You may then go ahead with the option that you find the most acceptable.
Next Steps
Set up an appointment with your dentist for an evaluation and discuss your options with them.