A new natural biomaterial: Sheep dentine derived hydroxyapatite

N. Akyurt*, M. Yetmez, U. Karacayli, O. Gunduz, S. Agathopoulos, H. Gokce, M. L. ÖveÇoglu, F. N. Oktar

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Citations (Scopus)

Abstract

Hydroxyapatite (HA) is a particularly attractive material for bone and tooth implants since it does not only closely resemble human tooth and bone mineral but it has also biologically proven to be compatible with these tissues. The applications of pure HA are restricted to non load bearing implants due to the poor mechanical properties of HA. Biomaterials of synthetic HA are highly reliable but the synthesis of HA is often complicate and expensive. Bioceramics of naturally derived biological apatites are more economic. Aim of the present work is to introduce sheep teeth dentine HA material as an alternative source of bioactive biomaterials for grafting purposes. The work was started with such a way that extracted sheep teeth were cleaned. The teeth were calcinated at 850°C in air. It was seen that enamel matter was easily separated from dentine after calcination. The collected dentine parts were crushed and ball milled. The powder was pressed between hardened steel dies to produce samples suitable for compression and microhardness tests. The obtained powder compacts were sintered at different temperatures, specifically 1000, 1100, 1200, and 1300°C in air. Results of microhardness and compression strength (along with the statistical analysis of these results) as well as those of SEM and XRD analyses are presented. In the literature, there is very little information about the mechanical properties of dentine and enamel matter derived from sheep, bovine and human. The highest compression strength value in the present study was measured around 146 MPa (from human dentine derived HA the highest value was almost 60 MPa after sintering at 1300°C). The best microhardness in the present study was found as nearly 125 HV. The results of this study showed that the HA material produced from sheep tooth dentine can be qualified as a promising source of HA needed to produce bioactive ceramics.

Original languageEnglish
Title of host publicationBioceramics 23
PublisherTrans Tech Publications Ltd
Pages281-286
Number of pages6
ISBN (Print)9783037852552
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event23rd Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2011 - Istanbul, Turkey
Duration: 6 Nov 20119 Nov 2011

Publication series

NameKey Engineering Materials
Volume493-494
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference23rd Symposium and Annual Meeting of International Society for Ceramics in Medicine, ISCM 2011
Country/TerritoryTurkey
CityIstanbul
Period6/11/119/11/11

Keywords

  • Hydroxyapatite
  • Mechanical Properties
  • Sheep Dentine

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