RO0111

ӗ I editorial 03 Dear Reader | Dr Yoshio Yahata, Guest Editor I special 06 Laser in endodontics (Part I) | Prof Giovanni Olivi et al. I research 10 Root-canal anatomy of the permanent mandibular first molar—Clinical implications and recommendations | Dr Carlos Heilborn et al. I case report 14 Revascularisation of the necrotic open apex | Dr Antonis Chaniotis 18 When nature laughs at endodontists: Two case reports | Dr Bojidar Kafelov 20 Diagnosis of vertical root fractures using CBCT and an alternative treatment modality | Dr Senem Yigit Özer 24 Bypassing a fractured instrument | Dr Rafaël Michiels I clinical technique 28 The WaveOne single-file reciprocating system | Dr Julian Webber et al. 34 R-phase advantages in shaping curves | Dr Philippe Sleiman I feature 38 An interview with Dr Martin Rickert, Executive Chairman Sanavis Group I industry report 40 Filling root-canal systems— The Calamus 3D Obturation Technique | Dr Clifford J. Ruddle I industry news 46 The EndoWave hybrid concept: Effective and reliable root-canal preparation | J. Morita I meetings 48 International Events I about the publisher 49 | submission guidelines 50 | imprint I content _ roots page 28 page 34 page 40 page 6 page 18 page 24 04 I roots1_2011 Cover image courtesy of Prof Marco Versiani and Prof Manoel D. Sousa Neto, Ribeirão Preto Dental School, University of São Paulo.