Investigation of tensile strength of hydroxyapatite with various porosities by diametral strength test

EVİS Z., Ozturk F.

MATERIALS SCIENCE AND TECHNOLOGY, vol.24, no.4, pp.474-478, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 4
  • Publication Date: 2008
  • Doi Number: 10.1179/174328408x278439
  • Journal Name: MATERIALS SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.474-478
  • Keywords: hydroxyapatite, sintering, porosity, X-ray diffraction, diametral strength test, HYDROXYLAPATITE-ZIRCONIA COMPOSITES, MECHANICAL-PROPERTIES, PHOSPHATE, COMPRESSION, CEMENTS, BEHAVIOR, POWDER, SIZE
  • Middle East Technical University Affiliated: Yes

Abstract

It is appropriate to administer the diametral test to biomedical materials used in dental applications because stresses formed on dental implants are similar to those that formed in this test. To show this similarity, an experimental study of diametral strength testing of hydroxyapatite was performed. The influence of porosity on hydroxyapatite was investigated experimentally to determine how the diametral strength was affected. Hydroxyapatite was air sintered at 1100 degrees C for 1 h with porosities ranging from 1 to 32%. The results indicated that hydroxyapatite with improved densification had higher diametral strength values. X-ray diffraction analysis showed that sintered samples were pure hydroxyapatite.