What is and what the endodont does
The endodont performs a canal treatment if there is a pulp inflammation. The dentist is the one who can detect inflammation and then recommend you an endodontic treatment.
Why the pulp inflammation occurs
Deep grooves create cracks in the tooth enamel, and bacteria can penetrate the tooth pulp causing infections. The same happens when the tooth is subject to a shock or crack ,causing cracks or when a seal is made incorrectly.