Farzana Paleker1, Peet J van der Vyver2. 1. Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa. Electronic address: farzanapaleker@gmail.com. 2. Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
Abstract
INTRODUCTION: The purpose of this study was to compare centering ability and apical canal transportation of K-files (KF), ProGlider (PG), and G-Files (GF) after glide path enlargement in curved canals by using micro-computed tomography. METHODS: Thirty canals each were randomly assigned to KF, GF, and PG. Teeth were scanned before and after glide path enlargement to compare centering ability at 3 levels: 1 mm (D1) and 7 mm (D7) from the apical foramen and at the point of maximum root curvature (Dmc). Transportation was assessed in 8 directions at D1. RESULTS: KF were significantly less centered than both nickel-titanium (NiTi) groups at D1. At Dmc, PG exhibited a significantly more centered enlargement than both GF and KF, which were significantly similar. At D7, PG was significantly more centered than KF, but there were no significant differences between GF and KF or between PG and GF (P < .016). KF exhibited significantly more canal transportation at D1 than the NiTi groups (P < .05). CONCLUSIONS: NiTi files cause less transportation than KF. At D1, KF was less centered than both NiTi files. PG remained more centered at Dmc and D7.
INTRODUCTION: The purpose of this study was to compare centering ability and apical canal transportation of K-files (KF), ProGlider (PG), and G-Files (GF) after glide path enlargement in curved canals by using micro-computed tomography. METHODS: Thirty canals each were randomly assigned to KF, GF, and PG. Teeth were scanned before and after glide path enlargement to compare centering ability at 3 levels: 1 mm (D1) and 7 mm (D7) from the apical foramen and at the point of maximum root curvature (Dmc). Transportation was assessed in 8 directions at D1. RESULTS:KF were significantly less centered than both nickel-titanium (NiTi) groups at D1. At Dmc, PG exhibited a significantly more centered enlargement than both GF and KF, which were significantly similar. At D7, PG was significantly more centered than KF, but there were no significant differences between GF and KF or between PG and GF (P < .016). KF exhibited significantly more canal transportation at D1 than the NiTi groups (P < .05). CONCLUSIONS: NiTi files cause less transportation than KF. At D1, KF was less centered than both NiTi files. PG remained more centered at Dmc and D7.
Authors: Thaís Christina Cunha; Felipe de Souza Matos; Luiz Renato Paranhos; Ítalo de Macedo Bernardino; Camilla Christian Gomes Moura Journal: BMC Oral Health Date: 2020-06-22 Impact factor: 2.757