A quantitative analysis of rotary, ultrasonic and manual techniques to treat proximally flattened root canals . Journal of Applied Oral Science, [S. l.], v. 15, n. 2, p. 89–93, 2007. DOI: 10.1590/S1678-77572007000200003. Disponível em: https://www.revistas.usp.br/jaos/article/view/3440.. Acesso em: 18 may. 2024.