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pubmed-article:8382091pubmed:abstractTextThe induction of a calcifying matrix was studied in vitro and compared for three biomaterials (collagen sponge, hydroxyapatite material and a mixture of both (Biostite)) cultured with human osteoblast-like cells. The influence of biomaterials on organic matrix synthesis and the calcification process was analysed at the ultrastructural level (transmission electron microscopy and X-ray microanalysis). Biomaterials were well tolerated by bone cells. Whichever biomaterial was used, osteoblasts proliferated and synthesized a new matrix constituted of fibrillar and non-fibrillar elements. This activity appeared earlier and was more intense with Biostite than with collagen sponge alone. A deposition of a mineral substance in this newly formed matrix was observed with the collagen sponge and Biostite, but never with hydroxyapatite alone. The mineral deposits were identified as hydroxyapatite crystals, similar to those observed and analysed in bone tissue. These in vitro observations clearly demonstrated the property of Biostite to produce a calcified collagenous matrix similar to bone tissue. However, in vivo confirmation is required before extending the use of this biomaterial to periodontology.lld:pubmed
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pubmed-article:8382091pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:8382091pubmed:articleTitleIn vitro induction of a calcifying matrix by biomaterials constituted of collagen and/or hydroxyapatite: an ultrastructural comparison of three types of biomaterials.lld:pubmed
pubmed-article:8382091pubmed:affiliationINSERM Unité 234, Faculté A. Carrel, Lyon, France.lld:pubmed
pubmed-article:8382091pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:8382091pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed