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Vidre bioactiu - Viquipèdia, l'enciclopèdia lliure
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typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Bioactive_glass.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Bioactive_glass.jpg/220px-Bioactive_glass.jpg" decoding="async" width="220" height="211" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Bioactive_glass.jpg/330px-Bioactive_glass.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Bioactive_glass.jpg/440px-Bioactive_glass.jpg 2x" data-file-width="1842" data-file-height="1765" /></a><figcaption>Vidre bioactiu observat per <a href="/wiki/Microscopi_electr%C3%B2nic" title="Microscopi electrònic">microscopia electrònica</a>.</figcaption></figure> <p>Els <b>vidres bioactius</b> són un grup de <a href="/wiki/Biomaterial" title="Biomaterial">biomaterials</a> <a href="/wiki/Cuina_vitrocer%C3%A0mica" title="Cuina vitroceràmica">vitroceràmics</a> que presenten una superfície <a href="/wiki/Reactivitat_qu%C3%ADmica" title="Reactivitat química">reactiva</a> i alhora són <a href="/wiki/Biocompatibilitat" title="Biocompatibilitat">biocompatibles</a>, fet que permet la seva unió a <a href="/wiki/Teixit_(biologia)" title="Teixit (biologia)">teixits biològics</a>. La seva composició semblant als minerals presents al cos humà els confereix un ampli ventall en aplicacions mèdiques i enginyeria de teixits, tals com empelts ossis o revestiments dentals.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_2-0" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>El primer vidre bioactiu apte per a l'ús clínic va ser inventat l'any 1969 per <a href="/w/index.php?title=Larry_Hench&action=edit&redlink=1" class="new" title="Larry Hench (encara no existeix)">Larry Hench</a> a la <a href="/wiki/Universitat_de_Florida" title="Universitat de Florida">Universitat de Florida</a>, i fou patentat com a <i><a href="/w/index.php?title=Bioglass&action=edit&redlink=1" class="new" title="Bioglass (encara no existeix)">Bioglass</a></i>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Aquest primer material tenia la següent composició, molt similar a la de l'<a href="/wiki/Os" title="Os">os</a> humà: 45% en pes de <a href="/wiki/Di%C3%B2xid_de_silici" title="Diòxid de silici">diòxid de silici</a> (SiO<small>2</small>), 24.5% d'<a href="/wiki/%C3%92xid_de_calci" title="Òxid de calci">òxid de calci</a> (CaO), 24.5% d'<a href="/wiki/%C3%92xid_de_sodi" title="Òxid de sodi">òxid de sodi</a> (Na<small>2</small>O) i 6% de <a href="/wiki/Penta%C3%B2xid_de_dif%C3%B2sfor" title="Pentaòxid de difòsfor">pentaòxid de difòsfor</a> (P₂O<small>5</small>). </p><p>Actualment hi ha diversos tipus de vidres bioactius amb característiques <a href="/w/index.php?title=Osteog%C3%A8nia&action=edit&redlink=1" class="new" title="Osteogènia (encara no existeix)">osteogèniques</a>, <a href="/wiki/Angiog%C3%A8nesi" title="Angiogènesi">angiogèniques</a> i de <a href="/w/index.php?title=Biorreabsorci%C3%B3&action=edit&redlink=1" class="new" title="Biorreabsorció (encara no existeix)">biorreabsorció</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> La seva producció es basa a partir de mètodes <a href="/w/index.php?title=Sol-gel&action=edit&redlink=1" class="new" title="Sol-gel (encara no existeix)">sol-gel</a>, de filat de fibres o de <a href="/wiki/Nanopart%C3%ADcula" title="Nanopartícula">nanopartícules</a>.<sup id="cite_ref-:0_2-1" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Vidre_bioactiu&action=edit&section=1" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFFarooqImranFarooqLeghari2012"><span style="font-variant: small-caps;">Farooq</span>, Imran; <span style="font-variant: small-caps;">Imran</span>, Zonera; <span style="font-variant: small-caps;">Farooq</span>, Umer; <span style="font-variant: small-caps;">Leghari</span>, Ali; <span style="font-variant: small-caps;">Ali</span>, Humera «<a rel="nofollow" class="external text" href="https://web.archive.org/web/20180603125826/http://www.jaypeejournals.com/eJournals/ShowText.aspx?ID=3022&Type=PAID&TYP=TOP&IN=~%2FeJournals%2Fimages%2FJPLOGO.gif&IID=234&isPDF=YES">Bioactive Glass: A Material for the Future</a>». <i>World Journal of Dentistry</i>, 3, 2012, pàg. 199–201. Arxivat de l'<a rel="nofollow" class="external text" href="http://www.jaypeejournals.com/eJournals/ShowText.aspx?ID=3022&Type=PAID&TYP=TOP&IN=~%2FeJournals%2Fimages%2FJPLOGO.gif&IID=234&isPDF=YES">original</a> el 2018-06-03. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.5005%2Fjp-journals-10015-1156">10.5005/jp-journals-10015-1156</a> [Consulta: 1r juliol 2021].</span> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180603125826/http://www.jaypeejournals.com/eJournals/ShowText.aspx?ID=3022&Type=PAID&TYP=TOP&IN=~%2FeJournals%2Fimages%2FJPLOGO.gif&IID=234&isPDF=YES">Arxivat</a> 2018-06-03 a <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</span> </li> <li id="cite_note-:0-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-:0_2-0">2,0</a></sup> <sup><a href="#cite_ref-:0_2-1">2,1</a></sup></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFYlänen2011"><span style="font-variant: small-caps;">Ylänen</span>, Heimo. «Introduction». A: <i>Bioactive Glasses: Materials, Properties and Applications</i> (en anglès).  Elsevier, 2011, p. xiii-xiv. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/9780857093318" title="Especial:Fonts bibliogràfiques/9780857093318">ISBN 9780857093318</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bioactive+Glasses%3A+Materials%2C+Properties+and+Applications&rft.atitle=Introduction&rft.aulast=Yl%C3%A4nen&rft.aufirst=Heimo&rft.date=2011&rft.pub=Elsevier&rft.pages=xiii-xiv&rft.isbn=9780857093318"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFHench2006"><span style="font-variant: small-caps;">Hench</span>, Larry L. «<a rel="nofollow" class="external text" href="https://link.springer.com/article/10.1007/s10856-006-0432-z">The story of Bioglass®</a>» (en anglès). <i>Journal of Materials Science: Materials in Medicine</i>, 17, 11, 22-11-2006, pàg. 967–978. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1007%2Fs10856-006-0432-z">10.1007/s10856-006-0432-z</a>. <a href="/wiki/ISSN" title="ISSN">ISSN</a>: <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/0957-4530">0957-4530</a>.</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFKrishnanLakshmi2013"><span style="font-variant: small-caps;">Krishnan</span>, Vidya; <span style="font-variant: small-caps;">Lakshmi</span>, T. «<a rel="nofollow" class="external text" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3696226/">Bioglass: A novel biocompatible innovation</a>». <i>Journal of Advanced Pharmaceutical Technology & Research</i>, 4, 2, 01-01-2013, pàg. 78–83. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.4103%2F2231-4040.111523">10.4103/2231-4040.111523</a>. <a href="/wiki/ISSN" title="ISSN">ISSN</a>: <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/2231-4040">2231-4040</a>. <a href="/wiki/PubMed" title="PubMed">PMC</a>: <a rel="nofollow" class="external text" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMCPMC3696226">PMC3696226</a>. <a href="/wiki/PubMed" title="PubMed">PMID</a>: <a href="https://www.ncbi.nlm.nih.gov/pubmed/23833747?dopt=Abstract" class="extiw" title="pmid:23833747">23833747</a>.</span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFRahamanDayBalFu2017"><span style="font-variant: small-caps;">Rahaman</span>, Mohamed N.; <span style="font-variant: small-caps;">Day</span>, Delbert E.; <span style="font-variant: small-caps;">Bal</span>, B. Sonny; <span style="font-variant: small-caps;">Fu</span>, Qiang; <span style="font-variant: small-caps;">Jung</span>, Steven B. «<a rel="nofollow" class="external text" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3085647/">Bioactive glass in tissue engineering</a>». <i>Acta biomaterialia</i>, 7, 6, 22-02-2017, pàg. 2355–2373. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016%2Fj.actbio.2011.03.016">10.1016/j.actbio.2011.03.016</a>. <a href="/wiki/ISSN" title="ISSN">ISSN</a>: <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/1742-7061">1742-7061</a>. <a href="/wiki/PubMed" title="PubMed">PMC</a>: <a rel="nofollow" class="external text" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMCPMC3085647">PMC3085647</a>. <a href="/wiki/PubMed" title="PubMed">PMID</a>: <a href="https://www.ncbi.nlm.nih.gov/pubmed/21421084?dopt=Abstract" class="extiw" title="pmid:21421084">21421084</a>.</span></span> </li> </ol></div></div> <!-- NewPP limit report Parsed by mw‐web.eqiad.main‐7c479b968‐85q8w Cached time: 20241115233732 Cache expiry: 2592000 Reduced expiry: false Complications: [] CPU time usage: 0.112 seconds Real time usage: 0.423 seconds Preprocessor visited node count: 1665/1000000 Post‐expand include size: 12324/2097152 bytes Template argument size: 3350/2097152 bytes Highest expansion depth: 12/100 Expensive parser function count: 0/500 Unstrip recursion depth: 0/20 Unstrip post‐expand size: 7475/5000000 bytes Lua time usage: 0.022/10.000 seconds Lua memory usage: 1484048/52428800 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 99.722 1 -total 100.00% 99.722 1 Plantilla:Referències 50.29% 50.152 4 Plantilla:Ref-publicació 30.26% 30.180 1 Plantilla:Ref-llibre 29.11% 29.028 5 Plantilla:If_both 6.40% 6.379 1 Plantilla:Webarchive 1.97% 1.961 2 Plantilla:PMID --> <!-- Saved in parser cache with key cawiki:pcache:idhash:1474683-0!canonical and timestamp 20241115233732 and revision id 31441805. 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