he made a mistake and was willing to compensate for it (no charg

endodontists are people and people make mistakes. you didn't occur serious damage. I think you have a better chance just negotiate with the endodontist and your dentist for a better compenstation (let him pay the crown and also say one or two years of your dentist's visit and reserve the right to sue if anything worse is discovered later). to be honest, you don't really have much of a case her. 'little' lawyers will charge you but you won't likely be compensated as you wish.