Endodontists are dental specialists; dentists who have undergone additional residency training after completing the normal 4-year post-graduate dental degree. This gives them unique training to become experts in one subset of procedures within the dental field. The average endodontist will have gone through 4 years of college for a bachelor’s degree, 4 years of dental school for a dental degree, and then 2-3 years of residency for a Certificate in Endodontics. Only after receiving a certificate can a dentist call themselves an endodontist.