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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.)

A Novel Model for Evaluating the Flow of Endodontic Materials Using Micro-computed Tomography

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Tanomaru-Filho, Mario ; Esteves Torres, Fernanda Ferrari ; Bosso-Martelo, Roberta ; Chavez-Andrade, Gisselle Moraima ; Bonetti-Filho, Idomeo ; Guerreiro-Tanomaru, Juliane Maria
Total Authors: 6
Document type: Journal article
Source: JOURNAL OF ENDODONTICS; v. 43, n. 5, p. 796-800, MAY 2017.
Web of Science Citations: 5

Introduction: Flow and filling ability are important properties of endodontic materials. The aim of this study was to propose a new technique for evaluating flow using micro computed tomographic (mu CT) imaging. Methods: A glass plate was manufactured with a central cavity and 4 grooves extending out horizontally and vertically. The flow of MTA-Angelus (Angelus, Londrina, PR, Brazil), zinc oxide eugenol (ZOE), and Biodentine (1310) (Septodont, Saint Maur des Fosses, France) was evaluated using International Standards Organization (ISO) 6876/2002 and a new technique as follows: 0.05 +/- 0.005 ml of each material was placed in the central cavity, and another glass plate and metal weight with a total mass of 120 g were placed over the material. The plate/material set was scanned using mu CT imaging. The flow was calculated by linear measurement (mm) of the material in the grooves. Central cavity filling was calculated in mm(3) in the central cavity. Lateral cavity filling (LCF) was measured by LCF mean values up to 2 mm from the central cavity. Data were analyzed statistically using analysis of variance and Tukey tests with a 5% significance level. Results: ZOE showed the highest flow rate determined by ISO methodology (P <.05). Analysis performed using ACT imaging showed MTA-Angelus and ZOE had higher linear flow rates in the grooves. Central cavity filling was similar for the materials. However, LCF was higher for BIO versus ZOE. Conclusions: Although ZOE presented better flow determined by ISO methodology, BIO showed the best filling ability. The model of the technique proposed for evaluating flow using mu CT imaging showed proper and reproducible results and could improve flow analysis. (AU)

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
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/16510-0 - Comparison between conventional tests and using micro-CT for evaluation of physicochemical properties of root-end filling materials and root canal sealers
Grantee:Fernanda Ferrari Esteves Torres
Support type: Scholarships in Brazil - Master
FAPESP's process: 15/03437-6 - Evaluation of reciprocating preparation, root canal filling, and the physicochemical and biological properties of filling and repair materials
Grantee:Mario Tanomaru Filho
Support type: Regular Research Grants