Danger zone analysis using cone beam computed tomography after apical enlargement with K3 and K3XF in a manikin model
Autor/a
Olivieri Fernández, Juan Gonzalo
García-Font, Marc
Gonzalez-Sanchez, Jose-Antonio
Roig Cayon, Miguel
Durán-Sindreu Terol, Fernando Salvador
Fecha de publicación
2016ISSN
1989-5488
Resumen
Background: The objective of the study was to evaluate and compare how apical enlargement with K3 and K3XF nickel-titanium (NiTi) rotary instruments reduces the root thickness in the danger zone and affects canal transportation and centering ability in mandibular molar mesial canals in a manikin extracted tooth model. Material and Methods: Seventy-two mesial root canals of first mandibular molars were instrumented. Initial and post-instrumentation Cone Beam Computed Tomography scans were performed after root canal preparation up to size 25, 30, 35 and 40 files. Canal transportation, canal centering and remaining root dentin thickness toward the danger zone were calculated in sections 1, 2 and 3 mm under the furcation level. Data were analyzed using nonparametric Kruskal-Wallis analysis of variance at a significance level of P < 0.05. Results: K3 instruments removed more dentin toward the danger zone compared with K3XF instruments (P< .05) and significant differences in dentin thickness were found when canal enlargement was performed to a #35-40 with both systems (P< 0.05). No significant differences in canal transportation and centering ability were found between systems, except when canal enlargement was performed to a #40 (P = 0,0136). No differences were observed when comparing the number of uses in both systems (P> 0.05). Conclusions: Under the conditions of this study K3 removed a significant amount of dentin at the furcation level compared with the R-Phase K3XF rotary system in curved root canals. Enlargement to a 35-40/04 file removed significantly more dentin with both systems.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
Inglés
Materias (CDU)
616.3 - Patología del aparato digestivo. Odontología
Palabras clave
Gruix de dentina
K3XF
Fase R
Capacitat central
Transport de canals
Augment apical
Espesor de dentina
K3XF
Fase R
Capacidad central
Transporte de canales
Aumento apical
Dentin thickness
K3XF
R-phase
Center ability
Canal transportation
Apical increase
Páginas
7
Publicado por
Medicina Oral
Colección
8;4
Publicado en
Journal of Clinical and Experimental Dentistry
Citación
Olivieri, Juan-Gonzalo García-Font, Marc Gonzalez-Sanchez, Jose-Antonio [et al.]. Danger zone analysis using cone beam computed tomography after apical enlargement with K3 and K3XF in a manikin model. Journal of Clinical and Experimental Dentistry, 2016, 8(4), e-361-367. Disponible en: <https://pubmed.ncbi.nlm.nih.gov/27703602/>. Fecha de acceso: 4 jun. 2021. DOI: 10.4317/jced.52523
Este ítem aparece en la(s) siguiente(s) colección(ones)
- Odontologia [228]
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