Effect of mechanical cycling on the flexural strength of densely sintered ceramics

Dental Materials : Official Publication of the Academy of Dental Materials
Koiti Marco ItinocheDenise Kanashiro Oyafuso

Abstract

The aim of this study was to evaluate the effect of mechanical cycling on the biaxial flexural strength of two densely sintered ceramic materials. Disc shaped zirconia (In-Ceram Zirconia) and high alumina (Procera AllCeram) ceramic specimens (diameter: 15 mm and thickness: 1.2 mm) were fabricated according to the manufacturers' instructions. The specimens from each ceramic material (N=40, n=10/per group) were tested for flexural strength either with or without being subjected to mechanical cycling (20,000 cycles under 50 N load, immersion in distilled water at 37 degrees C) in a universal testing machine (1 mm/min). Data were statistically analyzed using two-way ANOVA and Tukey's test (alpha=0.05). High alumina ceramic specimens revealed significantly higher flexural strength values without and with mechanical cycling (647+/-48 and 630+/-43 MPa, respectively) than those of zirconia ceramic (497+/-35 and 458+/-53 MPa, respectively) (p<0.05). Mechanical cycling for 20,000 times under 50 N decreased the flexural strength values for both high alumina and zirconia ceramic but it was not statistically significant (p>0.05). High alumina ceramic revealed significantly higher mean flexural strength values than that of zirconia ceramic t...Continue Reading

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Citations

Oct 5, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Sumana PosritongMarco C Bottino
Mar 4, 2008·Dental Materials Journal·Vanessa VásquezCarlos Pavanelli
May 14, 2014·The Journal of Prosthetic Dentistry·Rui YangXiuyin Zhang
Sep 24, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·Caroline CotesRodrigo O A Souza
Jul 23, 2008·Acta Odontologica Scandinavica·Jenni HjerppeLippo V J Lassila
Feb 28, 2016·Journal of the Mechanical Behavior of Biomedical Materials·G K R PereiraL F Valandro
Apr 29, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·Handan YilmazTülay Tıraş
Aug 23, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·Vanessa Zulema Ccahuana VásquezEstevão Tomomitsu Kimpara
Jul 18, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·Jenni HjerppeLippo V J Lassila
Aug 19, 2007·The Journal of Prosthetic Dentistry·Handan YilmazBasak E Gul
Jan 2, 2007·Dental Materials : Official Publication of the Academy of Dental Materials·Hee-Cheol KoDae-Joon Kim
Nov 3, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·Piyapanna PittayachawanJonathan C Knowles
May 13, 2009·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Marco Antonio BottinoLuiz Felipe Valandro
Nov 22, 2011·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Seçil Karakoca NemliTülay Tıraş
Dec 15, 2012·Journal of Dentistry·Hugo Alberto VidottiAccácio Lins do Valle
Jan 1, 2015·The Journal of Advanced Prosthodontics·Meryem Gülce SubaşıFaruk Özel
Feb 13, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Yurdanur UçarOrhun Ekren
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Jul 3, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Alper Ozdogan, Zeynep Yesil Duymus
Aug 3, 2015·Acta Biomaterialia Odontologica Scandinavica·Nuri Murat ErsoyMüjde Sevimay

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