Hii , Welcome To HCM & Thanks For Asking Your Query Here I understand your concern that you want to save your tooth but its completely depends upon the condition of your tooth and surrounding bone and tissue It is almost not possible to save it if the root of your molar has a complete vertical fracture running from crown towards the tip of root but if fracture is little of incomplete than there are chances of post & core built up after completing Root canal an dental X ray will show the exact pathology as your endodontist has suggested to go for extraction , he would have definitely looked at all possible way to save the tooth but if you feel uncertain you can always take a second advise however if your tooth can not be saved with any possible treatment you may opt for a dental Implant which your dr will place immediately after extraction , if you find it expensive than there is still an option of Fixed Dental bridge which is also highly successful prosthesis answer is completely based upon the information provided and exact diagnosis and treatment plan can only be made after thorough physical check up and examination I hope it help Thanks & Get well Soon