Push-out bond strength of different tricalcium silicate-based filling materials to root dentin
Braz. oral res. (Online)
;
32: e18, 2018. tab, graf
Article
in English
| 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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Oxides
/
Root Canal Filling Materials
/
Bismuth
/
Dental Bonding
/
Silicates
/
Calcium Compounds
/
Dental Pulp Cavity
/
Dentin
Type of study:
Evaluation studies
Limits:
Humans
Language:
English
Journal:
Braz. oral res. (Online)
Journal subject:
Dentistry
Year:
2018
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de Ribeirão Preto - Unaerp/BR
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