Author(s): Torres, Fernanda Ferrrari Esteves [UNESP] ; Jacobs, Reinhilde ; EzEldeen, Mostafa ; Guerreiro-Tanomaru, Juliane Maria [UNESP] ; dos Santos, Bernardo Camargo ; Lucas-Oliveira, Éverton ; Bonagamba, Tito José ; Tanomaru-Filho, Mario [UNESP]
Date: 2020
Persistent ID: http://hdl.handle.net/11449/199964
Origin: Oasisbr
Made available in DSpace on 2020-12-12T01:54:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-02-01
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
The aim of this study was to evaluate volumetric and morphological stability of 3 root-end filling materials in addition to porosity and interface voids, using micro-computed tomography (µCT) in high resolution and a highly accurate approach for image analysis. Following root-end resection and apical preparation, two-rooted maxillary premolars were divided into three groups, according to the filling materials: White MTA Angelus, Biodentine, and IRM. Samples were scanned by µCT at 5 µm after the setting time and at time intervals of 7 and 30 days after immersion in phosphate-buffered saline (PBS). Volumetric and morphological changes besides material porosity and interface voids were evaluated by comparing initial values and those obtained after immersion. Data were analyzed statistically, using ANOVA and t-tests (α = 0.05). All materials showed volumetric stability. Regarding the morphological changes, Biodentine had a significant thickness reduction after storage in PBS when compared with MTA. Biodentine also showed an increase in porosity, as well as in percentage and thickness of voids after 30 days of immersion. In conclusion, µCT in high resolution and an accurate image analysis approach may be used to evaluate morphological changes of endodontic materials. Although Biodentine showed suitable adaptability and lower values of porosity than MTA, after PBS immersion there was a dimensional reduction of this material, besides an increase in porosity and interface voids. [Figure not available: see fulltext.].
Department of Restorative Dentistry School of Dentistry São Paulo State University (Unesp) Araraquara
OMFS IMPATH research group Department of Imaging & Pathology Faculty of Medicine KU Leuven and Oral and Maxillofacial Surgery University Hospitals Leuven
Department of Dental Medicine Karolinska Institute
Department of Nuclear Energy Federal University of Rio de Janeiro (UFRJ)
São Carlos Institute of Physics University of São Paulo, PO Box 369
Department of Restorative Dentistry School of Dentistry São Paulo State University (Unesp) Araraquara
FAPESP: 2017/19049-0
