Evaluation of physicochemical properties of root-end filling materials using conventional and Micro-CT tests

Autor(es)

Esteves Torres, Fernanda Ferrari ; Bosso-Martelo, Roberta ; Espir, Camila Galletti ; Cirelli, Joni Augusto ; Guerreiro-Tanomaru, Juliane Maria ; Tanomaru-Filho, Mario

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Oral Science; v. 25, n. 4, p. 374-380, JUL-AUG 2017.
• Citações Web of Science: 8

Resumo

Objective: To evaluate solubility, dimensional stability, filling ability and volumetric change of root-end filling materials using conventional tests and new Micro-CT-based methods. Material and Methods: Solubility (loss of mass) after 7 and 30 days, and dimensional stability (in mm) were evaluated in accordance with Carvalho-Junior, et al.(7) (2007). The filling ability and volumetric change (in mm(3)) were evaluated by Micro-CT (Bruker-MicroCT, Kontich, Belgium) using resin models with cavities 3 mm deep and 1 mm in diameter. The cavities were filled with materials to evaluate filling ability, and then scanned by Micro-CT. After 7 and 30 days immersed in distilled water, the filled cavities were scanned again to evaluate the volumetric change. MTA Angelus (MTA), Biodentine (BIO) and zinc oxide-eugenol cement (ZOE) were evaluated. Data were submitted to analysis of variance (ANOVA) and Tukey's test with 5% significance level. Results: The results suggested correlated or complementary data between the proposed tests. At 7 days, BIO showed higher solubility and at 30 days, showed higher volumetric change in comparison with MTA (p < 0.05). With regard to volumetric change, the tested materials were similar (p > 0.05) at 7 days. At 30 days, they presented similar solubility. BIO and MTA showed higher dimensional stability than ZOE (p < 0.05). ZOE and BIO showed higher filling ability (p < 0.05). Conclusions: ZOE presented a higher dimensional change, and BIO had greater solubility after 7 days. BIO presented filling ability and dimensional stability, but greater volumetric change than MTA after 30 days. Micro-CT can provide important data on the physicochemical properties of materials complementing conventional tests. (AU)

• Processo FAPESP: 15/03437-6 - Avaliação do preparo reciprocante, da obturação dos canais radiculares, e das propriedades físico-químicas e biológicas de materiais obturadores e reparadores
• Beneficiário: Mario Tanomaru Filho
• Linha de fomento: Auxílio à Pesquisa - Regular
• 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
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/16510-0 - Comparação entre testes convencionais e empregando micro-CT na avaliação de propriedades físico-químicas de materiais retrobturadores e cimentos endodônticos
• Beneficiário: Fernanda Ferrari Esteves Torres
• Linha de fomento: Bolsas no Brasil - Mestrado