Sobrino González, MarioFoschi, FedericoEstévez Luaña, RobertoLoroño Goikoechea, GaizkaConde Villar, Antonio JesúsPérez Alfayate, Ruth2023-02-282023-02-282023Sobrino, M., Foschi, F., Estévez, R., Loroño, G., Conde Villar, A., & Pérez-Alfayate, R. (2023). Effects of continuous chelation on the instrumentation of curved canals with a martensitic NiTi file system: An ex vivo micro-CT evaluation. Odontology, 111(1), 123-131. https://doi.org/10.1007/s10266-022-00727-31618-12471618-1255http://hdl.handle.net/11268/11847This study aimed to evaluate the influence of continuous chelation on apical transportation and centrality in shaped curved canals prepared with a martensitic file system and evaluated by micro-CT. Twenty-four lower molar canals with a curvature of 25o–40o were scanned pre-operatively with micro-CT and divided into 2 groups according to two different irrigation regimens (n=12). Group 1 was irrigated with NaOCl, group 2 with Dual Rinse. All canals were prepared with VDW. ROTATE system. The samples were scanned post-operatively and evaluated at 1, 3 and 5 mm from the apex to determine apical transportation and canal centrality using VG Studio software. Statistical analysis was performed with SPSS software using the non-parametric Mann–Whitney test. No statistically significant differences were found between the two groups for both apical transportation and canal centrality at any of the levels studied (p < 05). The use of continuous chelation during the instrumentation of the canals with martensitic alloy files does not produce greater transportation and does not gener- ate changes in centralization compared to NaOCl-only irrigation. Combined chelation and disinfection while shaping with martensitic NiTi can simplify the irrigation regimen without inducing iatrogenic aberrations.engTerapia por quelaciónEndodonciaCanales de irrigaciónjournal article10.1007/s10266-022-00727-3restricted accessOdontologíaTratamiento médicoTecnología médica