Micro-CT evaluation of filling of flattened root canals using a new premixed ready-to-use calcium silicate sealer by single-cone technique

Autor(es)

Tavares, Karina I. M. C. ^[1] ; Pinto, Jader C. ^[1] ; Santos-Junior, Airton O. ^[1] ; Torres, Fernanda F. E. ^[1] ; Guerreiro-Tanomaru, Juliane M. ^[1] ; Tanomaru-Filho, Mario ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Sao Paulo State Univ, Dept Restorat Dent, Araraquara Sch Dent, Rua Humaita 1680, BR-14801903 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 84, n. 5 DEC 2020.
• Citações Web of Science: 0

Resumo

The aim of this study was to evaluate the filling ability of a new premixed ready-to-use calcium silicate-based sealer, in comparison with an epoxy resin-based sealer by the single-cone technique in flattened root canals. Thirty-two flattened root canals of maxillary second premolars with buccal-lingual diameter 4 or more times larger than the mesio-distal diameter at 9 mm from the radiographic apex were selected. Root canals were prepared using Hyflex EDM 25/0.08 and additional preparation with ultrasonic tip Flatsonic and ProDesign Logic 25/0.03. After preparation, the root canals were filled with two root canal sealers (n = 16): Bio-C Sealer or AH Plus using the single-cone technique. Scanning was performed before and after root canal obturation using a Skycan 1176 micro-computed tomography (micro-CT) with an isotropic voxel size of 8.74 mu m. The percentage of voids was analyzed in the cervical/middle thirds and in the apical third. Data were submitted to the Mann-Whitney test at a significance level of 5%. There was no statistical difference between Bio-C Sealer and AH Plus (p > .05). The percentage of voids in the cervical/middle thirds was 8.94% (1.33-39.95) for Bio-C Sealer and 9.30% (1.19-18.00) for AH Plus (p > .05). In the apical third, this percentage was 11.84% (4.85-27.00) for Bio-C Sealer and 9.21% (1.34-28.78) for AH Plus (p > .05). By using the single-cone technique, neither Bio-C Sealer nor AH Plus provided a voids-free root canal filling. Both sealers had similar filling ability in flattened root canals. (AU)

• 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