Mother and son have received the same treatments on the same tooth - surprisingly! Both needed re-treatment. Dr. Danesh had to open up the calcified canals and fix so many complications. Two different generations, same tooth, same treatments & same challenging calcified canals.
The distal apex was open to file # 100 due to an extensive resorption. It was ovoid-shaped as well, so it would never be sealed by a round gutta percha cone. MTA apical plug is recommended to achieve an adequate seal and a barrier to condense the filling material.