Bone–titanium oxide interface in humans revealed by transmission electron microscopy and electron tomography
Identifieur interne : 001938 ( Pmc/Corpus ); précédent : 001937; suivant : 001939Bone–titanium oxide interface in humans revealed by transmission electron microscopy and electron tomography
Auteurs : Anders Palmquist ; Kathryn Grandfield ; Birgitta Norlindh ; Torsten Mattsson ; Rickard Br Nemark ; Peter ThomsenSource :
- Journal of the Royal Society Interface [ 1742-5689 ] ; 2011.
Abstract
Osseointegration, the direct contact between an implant surface and bone tissue, plays a critical role in interfacial stability and implant success. Analysis of interfacial zones at the micro- and nano-levels is essential to determine the extent of osseointegration. In this paper, a series of state-of-the-art microscopy techniques are used on laser-modified implants retrieved from humans. Partially laser-modified implants were retrieved after two and a half months' healing and processed for light and electron microscopy. Light microscopy showed osseointegration, with bone tissue growing both towards and away from the implant surface. Transmission electron microscopy revealed an intimate contact between mineralized bone and the laser-modified surface, including bone growth into the nano-structured oxide. This novel observation was verified by three-dimensional Z-contrast electron tomography, enabling visualization of an apatite layer, with different crystal direction compared with the apatite in the bone tissue, encompassing the nano-structured oxide. In conclusion, the present study demonstrates the nano-scale osseointegration and bonding between apatite and surface-textured titanium oxide. These observations provide novel data in human specimens on the ultrastructure of the titanium–bone interface.
Url:
DOI: 10.1098/rsif.2011.0420
PubMed: 21849383
PubMed Central: 3243398
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PMC:3243398Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>Osseointegration, the direct contact between an implant surface and bone tissue, plays a critical role in interfacial stability and implant success. Analysis of interfacial zones at the micro- and nano-levels is essential to determine the extent of osseointegration. In this paper, a series of state-of-the-art microscopy techniques are used on laser-modified implants retrieved from humans. Partially laser-modified implants were retrieved after two and a half months' healing and processed for light and electron microscopy. Light microscopy showed osseointegration, with bone tissue growing both towards and away from the implant surface. Transmission electron microscopy revealed an intimate contact between mineralized bone and the laser-modified surface, including bone growth into the nano-structured oxide. This novel observation was verified by three-dimensional Z-contrast electron tomography, enabling visualization of an apatite layer, with different crystal direction compared with the apatite in the bone tissue, encompassing the nano-structured oxide. In conclusion, the present study demonstrates the nano-scale osseointegration and bonding between apatite and surface-textured titanium oxide. These observations provide novel data in human specimens on the ultrastructure of the titanium–bone interface.</p>
</div>
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<front><journal-meta><journal-id journal-id-type="nlm-ta">J R Soc Interface</journal-id>
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<title-group><article-title>Bone–titanium oxide interface in humans revealed by transmission electron microscopy and electron tomography</article-title>
<alt-title alt-title-type="short">Report. Nano-scale osseointegration in human</alt-title>
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Author for correspondence (<email>anders.palmquist@biomaterials.gu.se</email>
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<lpage>400</lpage>
<history><date date-type="received"><day>29</day>
<month>6</month>
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<abstract><p>Osseointegration, the direct contact between an implant surface and bone tissue, plays a critical role in interfacial stability and implant success. Analysis of interfacial zones at the micro- and nano-levels is essential to determine the extent of osseointegration. In this paper, a series of state-of-the-art microscopy techniques are used on laser-modified implants retrieved from humans. Partially laser-modified implants were retrieved after two and a half months' healing and processed for light and electron microscopy. Light microscopy showed osseointegration, with bone tissue growing both towards and away from the implant surface. Transmission electron microscopy revealed an intimate contact between mineralized bone and the laser-modified surface, including bone growth into the nano-structured oxide. This novel observation was verified by three-dimensional Z-contrast electron tomography, enabling visualization of an apatite layer, with different crystal direction compared with the apatite in the bone tissue, encompassing the nano-structured oxide. In conclusion, the present study demonstrates the nano-scale osseointegration and bonding between apatite and surface-textured titanium oxide. These observations provide novel data in human specimens on the ultrastructure of the titanium–bone interface.</p>
</abstract>
<kwd-group><kwd>dental implant</kwd>
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<kwd>focused ion beam</kwd>
<kwd>transmission electron microscopy</kwd>
<kwd>electron tomography</kwd>
<kwd>bone</kwd>
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