Authors:	Ghanaati, Shahram Udeabor, Samuel E. Barbeck, Mike Willershausen, Ines Kuenzel, Oliver Sader, Robert A. Kirkpatrick, Charles James
Title:	Implantation of silicon dioxide-based nanocrystalline hydroxyapatite and pure phase beta-tricalciumphosphate bone substitute granules in caprine muscle tissue does not induce new bone formation
Online publication date:	12-Jul-2022
Year of first publication:	2013
Language:	english
Abstract:	BACKGROUND: Osteoinductive bone substitutes are defined by their ability to induce new bone formation even at heterotopic implantation sites. The present study was designed to analyze the potential osteoinductivity of two different bone substitute materials in caprine muscle tissue. MATERIALS AND METHODS: One gram each of either a porous beta-tricalcium phosphate (beta-TCP) or an hydroxyapatite/silicon dioxide (HA/SiO2)-based nanocrystalline bone substitute material was implanted in several muscle pouches of goats. The biomaterials were explanted at 29, 91 and 181 days after implantation. Conventional histology and special histochemical stains were performed to detect osteoblast precursor cells as well as mineralized and unmineralized bone matrix. RESULTS: Both materials underwent cellular degradation in which tartrate-resistant acid phosphatase (TRAP)-positive osteoclast-like cells and TRAP-negative multinucleated giant cells were involved. The ss-TCP was completely resorbed within the observation period, whereas some granules of the HA-groups were still detectable after 180 days. Neither osteoblasts, osteoblast precursor cells nor extracellular bone matrix were found within the implantation bed of any of the analyzed biomaterials at any of the observed time points. CONCLUSIONS: This study showed that ss-TCP underwent a faster degradation than the HA-based material. The lack of osteoinductivity for both materials might be due to their granular shape, as osteoinductivity in goat muscle has been mainly attributed to cylindrical or disc-shaped bone substitute materials. This hypothesis however requires further investigation to systematically analyze various materials with comparable characteristics in the same experimental setting.
DDC:	610 Medizin 610 Medical sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 04 Medizin
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7363
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/2.0/
Journal:	Head & face medicine 9
Pages or article number:	Art. 1
Publisher:	BioMed Central
Publisher place:	London
Issue date:	2013
ISSN:	1746-160X
Publisher URL:	http://dx.doi.org/10.1186/1746-160X-9-1
Publisher DOI:	10.1186/1746-160X-9-1
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)