Influence of surface treatment of yttria-stabilized tetragonal zirconia polycrystal with hot isostatic pressing on cyclic fatigue strength.

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 10(6) 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 sandblasting 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.

• Authors: Toshihiko Iijima, Shinya Homma, Hideshi Sekine, Hodaka Sasaki, Yasutomo Yajima, Masao Yoshinari
• Journal: Dental materials journal (Dent Mater J) Vol. 32 Issue 2 Pg. 274-80 ( 2013) ISSN: 1881-1361 [Electronic] Japan
• PMID: 23538763 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial)

Chemical References

• Dental Materials
• yttria stabilized tetragonal zirconia
• Water
• Yttrium
• Zirconium
• Aluminum Oxide
• Hydrofluoric Acid

Topics

• Acid Etching, Dental (methods)
• Aluminum Oxide (chemistry)
• Crystallography
• Dental Etching (methods)
• Dental Materials (chemistry)
• Dental Polishing (instrumentation, methods)
• Dental Stress Analysis (instrumentation)
• Hot Temperature
• Humans
• Hydrofluoric Acid (chemistry)
• Materials Testing
• Microscopy, Electron, Scanning
• Phase Transition
• Pliability
• Pressure
• Stress, Mechanical
• Surface Properties
• Temperature
• Time Factors
• Water (chemistry)
• Yttrium (chemistry)
• Zirconium (chemistry)