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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 31, n. 2 JAN 21 2020.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 17/22481-1 - Efeito do escaneamento e da análise em micro-CT na avaliação das propriedades de cimentos reparadores
• Beneficiário: Fernanda Ferrari Esteves Torres Carvalho
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 16/00321-0 - Desenvolvimento de novas metodologias utilizando micro-CT para avaliação de propriedades físico-químicas de materiais reparadores e cimentos endodônticos
• Beneficiário: Fernanda Ferrari Esteves Torres Carvalho
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/19049-0 - Avaliação das etapas do tratamento de canais radiculares, e das propriedades físico-químicas e biológicas de materiais à base de silicato tricálcico
• Beneficiário: Mario Tanomaru Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular