Effect of rotary or manual instrumetation, with or without a calcium hydroxide/1% chlorhexidine intracanal dressing, on the healing of experimentally induced chronic periapical lesions - Rossi, Andiara de; Silva, Léa Assed Bezerra da; Leonardo, Mario R.; Rocha, Lenaldo B.; Rossi, Marco Antônio (Oral Surgery, Oral Medicine, Oral pathology, Oral Radiology and Oral Radiology and Endodontics, 2005)