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Carbonate Substituted Hydroxyapatite; Development and Function of Osteoclasts

Journal Key Engineering Materials (Volumes 309 - 311)
Volume Bioceramics 18
Edited by Takashi Nakamura, Kimihiro Yamashita and Masashi Neo
Pages 133-136
DOI 10.4028/www.scientific.net/KEM.309-311.133
Citation Gavin M. Spence et al., 2006, Key Engineering Materials, 309-311, 133
Online since May, 2006
Authors Gavin M. Spence, Nelesh Patel, Roger A. Brooks, D.C. Ireland, William Bonfield, Neil Rushton
Keywords Carbonate Substituted Hydroxyapatite, Hydroxyapatite (HA), Osteoclast
Abstract

Human osteoclasts derived from CD14+ precursors were cultured on discs of stoichiometric hydroxyapatite (HA) and carbonate substituted hydroxyapatite (CHA) of varying carbonate contents. Resorption of the ceramic increased with increasing carbonate content up to 2.35 wt. %. Development of osteoclasts is qualitatively different on ceramics compared to dentine, occurring in discrete, confluent subpopulations, which suggests local cell signalling may be important in the process. Resorption appears to drive further development of osteoclasts. Controlling carbonate content may be one way of controlling the rate of resorption of synthetic HA ceramics.

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