Effect of different dimensions of test samples on the volumetric change assessment of endodontic materials
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Data
2021-01-01
Autores
Esteves Torres, Fernanda Ferrari [UNESP]
Guerreiro-Tanomaru, Juliane Maria [UNESP]
Pinto, Jader Camilo [UNESP]
Tanomaru-Filho, Mario [UNESP]
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Resumo
New methodologies using micro-CT to evaluate solubility besides dimensional and morphological changes of endodontic materials are proposed. However, there is no standardization in the methods. The aim of this study was to assess the effect of different dimensions of test samples on volumetric change evaluation of different endodontic materials. AH Plus, FillCanal and Sealapex root canal sealers, Biodentine, IRM and MTA root-end filling cements were used in the tests. Samples of each material with a thickness of 1.5 mm and different diameters were manufactured: 6.3, 7.75, and 9.0 mm. The samples were scanned in micro-computed tomography (micro-CT) after setting and after 7 days of immersion in distilled water. The volumetric change was evaluated by means of the difference in the total volume of the specimens before and after immersion. Data were submitted to ANOVA and Tukey tests (p<0.05). The size of the samples did not affect the percentage of volumetric change of the materials (p>0.05). All sample sizes had greater volume loss for Sealapex among the sealers and Biodentine for the cements (p<0.05). In conclusion, Biodentine and Sealapex had the highest volume loss after immersion. Samples with 1.5 mm thickness, and diameters ranging between 6.3 and 9.0 mm can be used to assess the stability of endodontic materials using micro-CT without affecting the percentage of volumetric change.
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Palavras-chave
Endodontics, Physical properties, Root canal obturation, X-ray microtomography
Como citar
Brazilian Dental Journal, v. 32, n. 1, p. 42-47, 2021.