Push-out bond strength of different tricalcium silicate-based filling materials to root dentin
Braz. oral res. (Online)
;
32: e18, 2018. tab, graf
Artículo
en Inglés
| LILACS
| ID: biblio-889488
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:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Óxidos
/
Materiales de Obturación del Conducto Radicular
/
Bismuto
/
Recubrimiento Dental Adhesivo
/
Silicatos
/
Compuestos de Calcio
/
Cavidad Pulpar
/
Dentina
Tipo de estudio:
Estudios de evaluación
Límite:
Humanos
Idioma:
Inglés
Revista:
Braz. oral res. (Online)
Asunto de la revista:
Odontología
Año:
2018
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de Ribeirão Preto - Unaerp/BR
Similares
MEDLINE
...
LILACS
LIS