Comparison of different irrigants on calcium hydroxide medication removal: microscopic cleanliness evaluation - Salgado, Ricardo Julio Cabrales; Moura Netto, Cacio de; Yamazaki, Andrea Kanako; Cardoso, Luciano Natividade; Moura, Abílio Albuquerque Maranhão de; Prokopowitsch, Igor (Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics, 2009)