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Acta medica Medianae
2016, vol. 55, br. 1, str. 26-32
Efekti lasero-terapije na intrakanalni dentin i cementno tkivo apeksa korena zuba
Mitić Aleksandara, Popović Jelenaa, Živković Slavoljubb ORCID, Mitić Vladimira, Nikolić Marijaa ORCID, Dačić Stefana
aUniverzitet u Nišu, Medicinski fakultet, Stomatološka klinika + Univerzitet u Nišu, Medicinski fakultet, Stomatološka klinika
bUniverzitet u Beogradu, Stomatološki fakultet

e-adresa: alek.mitic@yahoo.co.uk
Ključne reči: laser; cement; apeks; ultrastruktura; intrakanalni dentin
Sažetak
Obrada kanala korena zuba laserom je efikasna, ali zahteva obavezno hlađenje vodom kako bi se sprečila ireverzibilna termička oštećenja dentina, cementa i ostalih periapeksnih struktura. Cilj ovog rada bio je da se ultrastrukturno analizira površina intrakanalnog dentina i cementnog tkiva na apeksu korena zuba posle obrade kanala Er:YAG laserom bez irigacije i sa irigacijom sterilnim fiziološkim rastvorom. Korišćeno je 70 intaktnih maksilarnih i mandibularnih jednokorenih i dvokorenih humanih zuba, podeljenih u dve eksperimentalne i jednu kontrolnu grupu. Kod svih zuba je formiran pristupni kavitet. Za obradu kanala korišćen je Er:YAG laser talasne dužine 2940 nm, izlazne energije za impuls 140 mJ; u pulsnom režimu 125-160ms, stopom pulsne repeticije od 10 Hz i energijom od 15 W. Vreme obrade svakog kanala laserom iznosilo je 10 sekundi. Ultrastrukturna analiza intrakanalnog dentina i cementnog tkiva na apeksnom delu korena zuba urađena je na skening elektronskom mikroskopu (JEOL JSM -5300 Tokyo Japan). Intrakanalna obrada Er:YAG laserom bez vodenog hlađenja pokazuje stopljen cirkumpulparni dentin sa velikim pukotinama u dentinu, a cementno tkivo na apeksu je termički modifikovano u vidu ploča i pukotina. Intrakanalna obrada Er:YAG laserom uz kontinuirano vodeno hlađenje daje čistu intrakanalnu dentinsku površinu bez morfoloških promena cementnog tkiva. Obrada kanalnog sistema zuba je opravdana i moguća samo u uslovima stalnog hlađenja vodom, u protivnom nastaju ireverzibilna termička oštećenja intrakanalnog dentina i cementa na apeksu korena zuba.
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O članku

jezik rada: engleski
vrsta rada: originalan članak
DOI: 10.5633/amm.2016.0104
objavljen u SCIndeksu: 05.11.2016.
Creative Commons License 4.0

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