Single vs two-session root canal treatment: a preliminary randomized clinical study using cone beam computed tomography - Maia, Cláudia de Castro Rizzi; Maia Filho, Etevaldo Matos; Nelson Filho, Paulo; Silva, Raquel Assed Bezerra da; Queiroz, Alexandra Mussolino de; Silva, Francisco Wanderley Garcia de Paula e; Pereira, Sângela M. da Silva; Borges, Álvaro H.; Silva, Léa Assed Bezerra da (Journal of Contemporary Dental Practice, 2016)