Hi there!
To answer your question fully, it would require a clinical examination and a probably a dental x-ray.
Small broken portion
If the broken portion is small, we can either smooth the sharp edge or replace the missing portion with a filling.
Large broken portion
If the broken portion is very large, a root canal treatment or sometimes even extraction of the tooth may be indicated.
I would suggest a visit to a dentist at your earliest convenience so that we can have a look for you and suggest the relevant treatment options for yourself! Hope this helps a little bit!