Indian Journal of Dental Research

ORIGINAL RESEARCH
Year
: 2009  |  Volume : 20  |  Issue : 3  |  Page : 332--336

Comparison of resin push-out strength to root dentin of bovine- and human-teeth


Graziela Galhano1, Renata Marques de Melo1, Luiz Felipe Valandro2, Marco Antonio Bottino3 
1 São José dos Campos Dental School, São Paulo State University, Brazil
2 Division of Prosthodontics, Department of Restorative Dentistry, Federal University of Santa Maria, Brazil
3 Department of Dental Materials and Prosthodontics, São Paulo State University at São José dos Campos, Brazil

Correspondence Address:
Luiz Felipe Valandro
Division of Prosthodontics, Department of Restorative Dentistry, Federal University of Santa Maria
Brazil

Aim : To compare the push-out strength of bovine- and human-root dentin and, thus, evaluate the suitability of bovine-root dentin to substitute human-root dentin for bond strength testing. Materials and Methods : Ten single-rooted human-teeth and ten bovine incisors were prepared using a #3 bur of a fiber post system (12 mm long). The posts were duplicated with resin cement (Duolink). The root canals were treated with All Bond 2 adhesive system and the resin posts were cemented using Duolink. The specimens were cut perpendicular to their long axis, yielding disc-specimens with 1.5 mm thickness, which were submitted to a push-out test (1 mm/min). Ten bond strength values per group (n = 10) were used for statistical analysis (Student t test, a =.05). Results : Statistically significant differences were found for the bond strength values between bovine- (4.1 ± 1.3 MPa) and human-root dentin (8.6 ± 5.7 MPa) (P =.0001). Conclusion : The push-out strengths of bovine- and human-root dentin were statistically different.


How to cite this article:
Galhano G, de Melo RM, Valandro LF, Bottino MA. Comparison of resin push-out strength to root dentin of bovine- and human-teeth.Indian J Dent Res 2009;20:332-336


How to cite this URL:
Galhano G, de Melo RM, Valandro LF, Bottino MA. Comparison of resin push-out strength to root dentin of bovine- and human-teeth. Indian J Dent Res [serial online] 2009 [cited 2019 Oct 13 ];20:332-336
Available from: http://www.ijdr.in/article.asp?issn=0970-9290;year=2009;volume=20;issue=3;spage=332;epage=336;aulast=Galhano;type=0