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- Title
Influence of surface treatment of yttria-stabilized tetragonal zirconia polycrystal with hot isostatic pressing on cyclic fatigue strength.
- Authors
IIJIMA, Toshihiko; HOMMA, Shinya; SEKINE, Hideshi; SASAKI, Hodaka; YAJIMA, Yasutomo; YOSHINARI, Masao
- Abstract
Hot isostatic pressing processed yttria-stabilized tetragonal zirconia polycrystal (HIP Y-TZP) has the potential for application to implants due to its high mechanical performance. The aim of this study was to investigate the influence of surface treatment of HIP Y-TZP on cyclic fatigue strength. HIP Y-TZP specimens were subjected to different surface treatments. Biaxial flexural strength was determined by both static and cyclic fatigue testing. In the cyclic fatigue test, the load was applied at a frequency of 10 Hz for 10S cycles in distilled water at 37°C. The surface morphology, roughness, and crystal phase of the surfaces were also evaluated. The cyclic fatigue strength (888 MPa) of HIP Y-TZP with sandblssting and acid-etching was more than twice that of Y-TZP as specified in ISO 13356 for surgical implants (320 MPa), indicating the clinical potential of this material.
- Subjects
YTTRIA stabilized zirconium oxide; SURFACE preparation; MATERIAL fatigue; SURFACE morphology; SURFACE roughness
- Publication
Dental Materials Journal, 2013, Vol 32, Issue 2, p274
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2012-247