Your browser doesn't support javascript.
loading
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation
PINTO, Jáder Camilo; COAGUILA-LLERENA, Hernán; TORRES, Fernanda Ferrari Esteves; LUCAS-OLIVEIRA, Éverton; BONAGAMBA, Tito José; GUERREIRO-TANOMARU, Juliane Maria; TANOMARU-FILHO, Mário.
  • PINTO, Jáder Camilo; Universidade Estadual Paulista. School of Dentistry. Department of Restorative Dentistry. Araraquara. BR
  • COAGUILA-LLERENA, Hernán; Universidade Estadual Paulista. School of Dentistry. Department of Restorative Dentistry. Araraquara. BR
  • TORRES, Fernanda Ferrari Esteves; Universidade Estadual Paulista. School of Dentistry. Department of Restorative Dentistry. Araraquara. BR
  • LUCAS-OLIVEIRA, Éverton; Universidade de São Paulo. São Carlos Institute of Physics. Department of Physics and Interdisciplinary Science. São Carlos. BR
  • BONAGAMBA, Tito José; Universidade de São Paulo. São Carlos Institute of Physics. Department of Physics and Interdisciplinary Science. São Carlos. BR
  • GUERREIRO-TANOMARU, Juliane Maria; Universidade Estadual Paulista. School of Dentistry. Department of Restorative Dentistry. Araraquara. BR
  • TANOMARU-FILHO, Mário; Universidade Estadual Paulista. School of Dentistry. Department of Restorative Dentistry. Araraquara. BR
Braz. oral res. (Online) ; 35: e074, 2021. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1339459
ABSTRACT
Abstract The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on dentinal microcrack detection after root canal preparation using rotary heat-treated nickel-titanium files. Curved mesial root canals (n = 24) of mandibular molars were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). The specimens were scanned by micro-CT at 5 μm voxel size before and after root canal preparation. The percentage of microcracks was evaluated in images at 5, 10 and 20 μm voxel size, by two examiners at two moments. The Kappa and McNemar tests (α = 0.05) were used. The percentage of dentinal microcracks was similar before and after PDL and HEDM preparations, at 10 and 20 μm (p > 0.05). HEDM showed a higher percentage of dentinal microcracks in the middle third at 5 μm after preparation (p < 0.05). The detection of dentinal microcracks before and after instrumentation using PDL was more accurate at 5 μm than at 20 μm, in all thirds (p < 0.05). Within the limitations of this ex vivo study, as expected, the results showed that different resolutions influence the micro-CT analysis of microcracks. The highest accuracy in detecting microcracks was observed for analyses performed at 5 μm voxel size. HyFlex EDM caused even more microcracks to develop in the middle third, detectable only by visualization of images made at 5 μm voxel size.


Full text: Available Index: LILACS (Americas) Type of study: Diagnostic study Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2021 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR / Universidade de São Paulo/BR

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Type of study: Diagnostic study Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2021 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR / Universidade de São Paulo/BR