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2017, vol. 145, br. 7-8, str. 370-377
Histološke reakcije tkiva na novosintetisane bioaktivne materijale na bazi kalcijum-silikatnih sistema i hidroksiapatita – In vivo studija
aUniverzitet u Beogradu, Stomatološki fakultet, Klinika za bolesti zuba i endodonciju
bUniverzitet u Beogradu, Institut za nuklearne nauke Vinča, Beograd-Vinča

e-adresavanja.opacic.galic@gmail.com
Ključne reči: biokompatibilnost; kalcijum-silikatni sistem; hidroksiapatit; mineral-trioksid agregat
Sažetak
Uvod/Cilj: Usavršavanje materijala koji bi mogli da se koriste kao biološke zamene kosti jedna je od najznačajnijih i najaktivnijih oblasti istraživanja biomaterijala. Cilj ovog rada je bio da se ispita odgovor tkiva na novosintetisane nanomaterijale na bazi kalcijum-silikatnih sistema (KS) i hidroksiapatita (KS-HA) posle implantacije u potkožno tkivo pacova i direktnog prekrivanja pulpe zuba kunića. Metode: U potkožno tkivo 40 vistar pacova su implantirani testirani materijali, a posle 7, 15, 30 i 60 dana životinje su žrtvovane. Direktno prekrivanje pulpe je realizovano na zubima kunića. Na vestibularnim površinama sekutića preparisani su kaviteti, a eksponirana pulpa je prekrivana testiranim materijalima. Životinje su žrtvovane posle 10 i 15 dana. Kontrolni materijal u oba eksperimenta je bio mineralni trioksidni agregat (MTA). Histološka analiza je obuhvatila praćenje ćelijske komponente zapaljenja, prisustva gigantskih ćelija i nekroze tkiva. Rezultati: Sedam dana posle supkutane implantacije najjači zapaljenski odgovor dao je MTA (3,30 ± 0,48), dok je za KS i KS-HA on ocenjen sa 3,00 ± 0,71. Posle 60 dana došlo je do opadanja znakova zapaljenja, koje je bilo najmanje izraženo oko KS-HA (0,20 ± 0,45). Najmanje izražena zapaljenska reakcija pulpnog tkiva kunića uočena je kod materijala KS (1,83 ± 0,75), zatim kod MTA i KS-HA (2,67 ± 1,53, 3,00 ± 0,63). Zaključak: Novosintetisani materijali su izazvali blagu zapaljensku reakciju potkožnog tkiva pacova, a KS-HA je pokazao najbolju tkivnu toleranciju. Nanostrukturni biomaterijali KS i KS-HA su uzrokovali blagu do umerenu zapaljensku reakciju pupnog tkiva kunića samo u neposrednoj blizini implantiranog materijala.
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O članku

jezik rada: engleski
vrsta rada: originalan članak
DOI: 10.2298/SARH160719063O
objavljen u SCIndeksu: 27.12.2017.