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Influence of voxel size on micro-CT analysis of debris after root canal preparation
Department of Restorative DentistryPinto, Jáder Camilo; Department of Restorative DentistryTorres, Fernanda Ferrari Esteves; Department of Restorative DentistrySantos Junior, Airton Oliveira; Department of Restorative DentistryTavares, Karina Ines Medina Carita; Department of Restorative DentistryGuerreiro-Tanomaru, Juliane Maria; Department of Restorative DentistryTanomaru-Filho, Mario.
  • Department of Restorative DentistryPinto, Jáder Camilo; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistryPinto, Jáder Camilo. Araraquara. BR
  • Department of Restorative DentistryTorres, Fernanda Ferrari Esteves; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistryTorres, Fernanda Ferrari Esteves. Araraquara. BR
  • Department of Restorative DentistrySantos Junior, Airton Oliveira; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistrySantos Junior, Airton Oliveira. Araraquara. BR
  • Department of Restorative DentistryTavares, Karina Ines Medina Carita; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistryTavares, Karina Ines Medina Carita. Araraquara. BR
  • Department of Restorative DentistryGuerreiro-Tanomaru, Juliane Maria; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistryGuerreiro-Tanomaru, Juliane Maria. Araraquara. BR
  • Department of Restorative DentistryTanomaru-Filho, Mario; Universidade Estadual Paulista. School of Dentistry. Department of Restorative DentistryTanomaru-Filho, Mario. Araraquara. BR
Braz. oral res. (Online) ; 35: e008, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132748
ABSTRACT
Abstract The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on the evaluation of debris accumulation after passive ultrasonic irrigation (PUI) in curved root canals prepared with rotary nickel-titanium files. Mesial root canals (n = 24) of mandibular molars with curvature between 25° and 35° were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). PUI was performed after root canal preparation of all root canals. The specimens were scanned using high-resolution (5 μm voxel size) micro-CT imaging before and after experimental procedures. The percentage of debris was analyzed in the middle and apical thirds using images with 5, 10 and 20 μm voxel sizes. Data were compared using unpaired and paired Student's t-test, ANOVA and Tukey's statistical tests (α = 0.05). There were no differences among the debris analyses performed at different voxel sizes (5, 10 and 20 μm) (p > 0.05). The percentage of debris was similar between the root canals prepared by PDL and HEDM before and after PUI (p > 0.05). In both groups, the percentage of debris decreased in the middle third after PUI (p < 0.05). Within the limitations of this ex vivo study, it can be concluded that the voxel sizes evaluated did not have a significant impact on the analysis of accumulated debris. However, the results showed a tendency for detection of more debris in the analysis performed using a lower voxel size. PUI decreased the debris accumulation in the middle third of curved root canals.
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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Preparation / Dental Pulp Cavity Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Preparation / Dental Pulp Cavity Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR