Nonsurgical Endodontic Retreatment of Advanced Inflammatory External Root Resorption Using Mineral Trioxide Aggregate Obturation.Published in:Case Reports in Dentistry, 2012, p. 1, doi. 10.1155/2012/624792By:Utneja, Shivani;Garg, Gaurav;Arora, Shipra;Talwar, SangeetaPublication type:Article