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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Micro-computed tomography high resolution evaluation of dimensional and morphological changes of 3 root-end filling materials in simulated physiological conditions

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Author(s):
Torres, Fernanda Ferrrari Esteves [1] ; Jacobs, Reinhilde [2, 3, 4] ; EzEldeen, Mostafa [3, 4] ; Guerreiro-Tanomaru, Juliane Maria [1] ; Dos Santos, Bernardo Camargo [5] ; Lucas-Oliveira, Everton [6] ; Bonagamba, Tito Jose [6] ; Tanomaru-Filho, Mario [1]
Total Authors: 8
Affiliation:
[1] Sao Paulo State Univ Unesp, Sch Dent, Dept Restorat Dent, Sao Paulo - Brazil
[2] Karolinska Inst, Dept Dent Med, Stockholm - Sweden
[3] Univ Hosp Leuven, Oral & Maxillofacial Surg, Leuven - Belgium
[4] Katholieke Univ Leuven, Dept Imaging & Pathol, OMFS IMPATH Res Grp, Fac Med, Leuven - Belgium
[5] Fed Univ Rio de Janeiro UFRJ, Dept Nucl Energy, Rio De Janeiro, RJ - Brazil
[6] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 31, n. 2 JAN 21 2020.
Web of Science Citations: 0
Abstract

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 (mu CT) 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 mu CT at 5 mu m 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 (alpha = 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, mu CT 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. {[}GRAPHICS] . (AU)

FAPESP's process: 17/22481-1 - Effect of scanning and analysis using micro-CT on evaluation of the properties of repair cements
Grantee:Fernanda Ferrari Esteves Torres Carvalho
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 16/00321-0 - Development of new methodologies using micro-CT for evaluation of physicochemical properties of repair materials and endodontic sealers
Grantee:Fernanda Ferrari Esteves Torres Carvalho
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/19049-0 - Evaluation of the root canal treatment procedures, physicochemical and biological properties of tricalcium silicate-based materials
Grantee:Mario Tanomaru Filho
Support Opportunities: Regular Research Grants