We are excited to announce that the repository will soon undergo an upgrade, featuring a new look and feel along with several enhanced features to improve your experience. Please be on the lookout for further updates and announcements regarding the launch date. We appreciate your support and look forward to unveiling the improved platform soon.
dc.contributor.author | Dullabh, Hemant D.![]() |
|
dc.contributor.author | Herbst, Dirk![]() |
|
dc.contributor.author | Sykes, Leanne M.![]() |
|
dc.contributor.author | Biseswar, Nadir![]() |
|
dc.date.accessioned | 2018-01-12T05:52:15Z | |
dc.date.available | 2018-01-12T05:52:15Z | |
dc.date.issued | 2017-03 | |
dc.description.abstract | INTRODUCTION : Brittleness and low strength render conventional ceramic systems unsuitable for routine restorative use in molars. Modern, high-strength ceramic core materials such as high purity aluminum oxide (Al2O3) and yttrium - partially stabilized zirconia (Y-PSZ) have been designed for aesthetic, metal-free, all-ceramics in posterior teeth. AIMS AND OBJECTIVES : To compare the biaxial flexural strengths 1. of these two core materials. 2. To compare the strengths of Y-PSZ samples produced by two manufacturers. MATERIALS AND METHODS : Three groups of discs measuring 16mm diameter and 2mm thickness were prepared for each of the sample materials, high purity Al2O3, commercially available as Turkom-Cera, and Y-PSZ, commercially available as Cercon and LAVA. The Biaxial flexural strengths were measured using a Zwick Z010 Material Testing Machine. Reliability was compared using Weibull Moduli. RESULTS : Mean strengths for LAVA, Cercon and Turkom-Cera were 866.44, 586.92, 155.71 MPa respectively. Statistically significant differences were shown between the mean values. DISCUSSION AND CONCLUSION : This project showed that the samples of Y-PSZ had higher biaxial flexural strengths than those of high purity Al2O3. The biaxial flexural strengths of Y-PSZ, sourced from two manufacturers, are significantly different. It is suggested that Y-PSZ is suitable and indicated for restorative use in molar regions. | en_ZA |
dc.description.department | Prosthodontics | en_ZA |
dc.description.librarian | am2018 | en_ZA |
dc.description.uri | https://www.sada.co.za/the-sadj | en_ZA |
dc.identifier.citation | Dullabh, H.D., Herbst, D., Sykes, L.M. & Biseswar, N. 2017, 'Biaxial flexural strength of three ceramic oxide core materials', South African Dental Journal, vol. 72, no. 2, pp. 56-61. | en_ZA |
dc.identifier.issn | 1029-4864 (print) | |
dc.identifier.issn | 2519-0105 (online) | |
dc.identifier.uri | http://hdl.handle.net/2263/63505 | |
dc.language.iso | en | en_ZA |
dc.publisher | South African Dental Association | en_ZA |
dc.rights | © 2017 E-Doc cc | en_ZA |
dc.subject | High-strength ceramics | en_ZA |
dc.subject | Tensile stress | en_ZA |
dc.subject | Biaxial flexural strength | en_ZA |
dc.subject | Ceramic oxide core materials | en_ZA |
dc.title | Biaxial flexural strength of three ceramic oxide core materials | en_ZA |
dc.type | Article | en_ZA |