Post-instrumentation dentinal microcracks induced by two NiTi rotary systems with increased super elasticity and shape memory: a microCT comparative and methodological ex vivo study
Author
Elmsmari, Firas
Prina, João Nuno
Perez Morales, Maria de las Nieves
Olivieri Fernández, Juan Gonzalo
Durán-Sindreu Terol, Fernando Salvador
Gonzalez Sanchez, Jose Antonio
Afrashtehfar, Kelvin Ian
Publication date
2023ISSN
2079-9284
Abstract
This study aimed to determine the incidence of dentinal microcracks after instrumenting the root canals of maxillary premolars using two novel rotary instrumentation systems. Micro-computed tomography (microCT) scans and images generated by sectioning and observation with a stereomicroscope were used to assess the specimens. Twenty-two freshly extracted maxillary premolars were collected and the specimens were divided into two groups of eleven. The tested radicular shaping systems were XP-Endo shaper and TRUShape (i.e., single file). The specimens were scanned with microCT pre- and post-instrumentation, and the newly formed microcracks were detected. The post-instrumentation scans were also compared with images obtained by sectioning method and stereomicroscope inspection, comparing the incidence of microcracks in either microCT scans or images. The results identified an overall incidence of 0.49% of newly formed microcracks, with no statistically significant differences (p = 0.689) between the shaping systems (0.11% for TRUShape and 0.87% for XP-Endo shaper). There were statistically significant differences (p < 0.001) between the microcracks incidence in microCT scans and the sectioning method (16.6% more for the latter). In conclusion, the results show that neither TRUShape nor XP-Endo shaper created dentinal microcracks during root canal instrumentation. The sectioning method with stereomicroscope evaluation overestimates the presence of microcracks with a statistically significant difference compared to microCT scans.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Tractament d'endodòncia
Tractament del conducte radicular
Fractura de l'arrel vertical
Microcrack dentinal
Niquelur de titani
Preparació del conducte radicular
Microtomografia de raigs X
Tratamiento de endodoncia
Tratamiento de conducto
Fractura radicular vertical
Microfisura dentinaria
Niqueluro de titanio
Preparación de conductos radiculares
Microtomografía de rayos X
Endodontic treatment
Root canal treatment
Vertical root fracture
Dentinal microcrack
Titanium nickelide
Root canal preparation
X-ray microtomography
Pages
10
Publisher
MDPI
Collection
10;1
Is part of
Cosmetics
Citation
Elmsmari, Firas; Prina, João Nuno; Perez Morales, Maria de las Nieves [et al.]. Post-instrumentation dentinal microcracks induced by two NiTi rotary systems with increased super elasticity and shape memory: a microCT comparative and methodological ex vivo study. Cosmetics, 2023, 10(1), 37. Disponible en: <https://www.mdpi.com/2079-9284/10/1/37>. Fecha de acceso: 23 feb. 2023. DOI: 10.3390/cosmetics10010037
Link to the related item
This item appears in the following Collection(s)
- Odontologia [228]
Rights
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/