Push-out bond strength of different tricalcium silicate-based filling materials to root dentin
Braz. oral res. (Online)
; 32: e18, 2018. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-889488
Biblioteca responsável:
BR1.1
ABSTRACT
Abstract The aim of this study was to evaluate the bond strength of different triccalcium silicate cements to retrograde cavity using a push out test. Thirty maxillary central incisors were shaped using #80 hand files and sectioned transversally. Root slices were obtained from the apical 4 mm after eliminating the apical extremity. The specimens were embedded in acrylic resin and positioned at 45° to the horizontal plane for preparation of root-end cavities with a diamond ultrasonic retrotip. The samples were divided into three groups according to the root-end filling material (n = 10) MTA Angelus, ProRoot MTA and Biodentine. A gutta-percha cone (#80) was tugged-back at the limit between the canal and the root-end cavity. The root-end cavity was filled and the gutta-percha cone was removed after complete setting of the materials. The specimens were placed in an Instron machine with the root-end filling turned downwards. The push-out shaft was inserted in the space previously occupied by the gutta-percha cone and push out testing was performed at a crosshead speed of 1.0 mm/min. There was no statistically significant difference in resistance to push out by the materials tested (p > 0.01). MTA Angelus and ProRoot MTA showed predominantly mixed failure while Biodentine exhibited mixed and cohesive failures. The tricalcium silicate-based root-end filling materials showed similar bond strength retrograde cavity.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Óxidos
/
Materiais Restauradores do Canal Radicular
/
Bismuto
/
Colagem Dentária
/
Silicatos
/
Compostos de Cálcio
/
Cavidade Pulpar
/
Dentina
Tipo de estudo:
Estudo de avaliação
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. oral res. (Online)
Assunto da revista:
Odontologia
Ano de publicação:
2018
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade de Ribeirão Preto - Unaerp/BR