Makhalidwe a UV ochiritsika utomoni

Amapangidwa ndi monomer ndi oligomer ndipo ali ndi magulu ogwira ntchito.Ikhoza kuyambitsa polymerization reaction ndi kuwala koyambitsa kuwala pansi pa UV walitsa kuti apange filimu yosasungunuka.Utoto wochiritsidwa wopepuka, womwe umadziwikanso kuti photosensitive resin, ndi oligomer yomwe imatha kusintha mwachangu thupi ndi mankhwala pakangopita nthawi yochepa itatha kuyatsidwa ndi kuwala, kenako ndikudutsana ndikuchiritsa.Utoto wochiritsika wa UV ndi mtundu wa utomoni wowoneka bwino wokhala ndi mamolekyu ochepa olemera.Lili ndi magulu ochitapo kanthu omwe amatha kuchiritsidwa ndi UV, monga maunsaturated double bond kapena epoxy groups.Utoto wochiritsika wa UV ndi utomoni wa matrix wa zokutira zochiritsira za UV.Zimaphatikizidwa ndi photoinitiator, diluent yogwira ntchito ndi zowonjezera zosiyanasiyana kuti apange zokutira zochiritsira za UV.

Utoto wochiritsika wa UV umapangidwa ndi monomer ndi oligomer.Lili ndi magulu ogwira ntchito ndipo limatha kuyambitsa polymerization reaction ndi kuwala koyambitsa kuwala pansi pa UV walitsa kuti apange filimu yosasungunuka.Bisphenol A epoxy acrylate ili ndi mawonekedwe othamanga kuchiritsa mwachangu, kukana kwamafuta osungunulira komanso kuuma kwakukulu.Polyurethane acrylate ali ndi makhalidwe abwino kusinthasintha ndi kuvala kukana.Utoto wopangidwa ndi kuwala wochiritsidwa ndi chinthu chomwe chimagwiritsidwa ntchito nthawi zambiri mu dipatimenti ya Stomatology.Chifukwa cha mtundu wake wokongola komanso mphamvu zina zopondereza, zimagwira ntchito yofunika kwambiri pazachipatala.Tapeza zotsatira zokhutiritsa pokonza zolakwika zosiyanasiyana ndi zibowo za mano akutsogolo.

Kuyerekeza kwamankhwala olankhula

Kwa ma caries akuya akudera lalikulu, njira zambiri zobwezeretsera zachikhalidwe zimakhala ndi zabwino ndi zovuta zawo: amalgam imakhala ndi kuuma kwakukulu komanso kukana kolimba kolimba, koma ilibe zomatira (palibe njira ziwiri), imangodalira kuyika makina, imakwawa, ndipo imakhala zina corrosiveness ndi kawopsedwe.Kusanthula kwa zinthu zowonongeka kumasonyeza kuti Mercury, siliva, mkuwa ndi zinki zimasungunuka [2];Simenti ya ionomer yagalasi imakhala yomatira bwino, koma imakhala ndi kuuma koyipa, sikutha kuvala komanso yosavuta kusintha mtundu;Inlay (kuphatikiza aloyi, pulasitiki ndi zadothi) kubwezeretsa, korona positi korona pachimake kubwezeretsedwa, zitsulo chipolopolo korona ndi zadothi zosakaniza kuti zitsulo korona kubwezeretsa chimagwiritsidwa ntchito pachipatala, koma kukonzekera dzino ali ndi kuvala lalikulu, ndondomeko zovuta ndi mtengo wokwera.

Utoto wochirikizidwa ndi UV umagwiritsidwa ntchito kwambiri m'chipatala.Ili ndi ntchito yabwino, mtundu wokongola komanso wokhalitsa, ntchito yosavuta, yotsika mtengo komanso yotchuka kwambiri.Koma utomoni wa photosensitive uli ndi phototropism.Njira yodzaza mwachindunji mkamwa imatengedwa, ndipo gwero lowunikira limachokera mbali imodzi, zomwe ziyenera kuchititsa kuti utomoni wa polymerization pansi ndi khoma la phanga silili bwino ngati pamwamba, zomwe zimapangitsa kuti pakhale ming'alu pamphambano. wa mano apansi [3].Kafukufuku wina wasonyeza kuti kuchiritsa kwa utomoni wophatikizika pambuyo pochiritsa kuwala ndi 43% ~ 64% [3].M'malo mwake, zodzaza zotere zimangosewera 1/2 ~ 2/3 yazinthu zawo zakuthupi.Kuti athetse vutoli, kudzazidwa wosanjikiza (2 mm kwa wosanjikiza aliyense) nthawi zambiri amagwiritsidwa ntchito pochiritsa kuwala kuchipatala, koma wosanjikiza uliwonse wa njira iyi umawonekera ku malo achinyezi m'kamwa, kotero pali mulu wa n- 1 "zigawo" zodzaza zomwe zimakhala zosanjikiza imodzi.Tsopano chimagwiritsidwa ntchito kwambiri zokutira ndi inki.