IPS e.max Press Crown, cov khoom siv kho hniav hloov kho kho hniav los ntawm Ivoclar Vivadent, yog tsim los ntawm lithium disilicate iav -ceramic, muaj npe nrov rau nws qhov tshwj xeeb sib npaug ntawm lub zog thiab kev zoo nkauj. Cov khoom siv qib siab no ua tiav lub zog flexural ntawm kwv yees li 400 MPa los ntawm lub tshav kub- cov txheej txheem nias, qhov twg ua ntej- sintered blocks yog qhov tseeb- molded nyob rau hauv qhov kub thiab txias kom replicate natural tooth anatomy nrog micron - qib raug. Nws cov qauv crystalline tshwj xeeb tsis yog tsuas yog txhim khu kev ruaj ntseg tab sis kuj tseem khaws cov translucency, ua rau nws zoo tagnrho rau ob qho tib si sab hauv thiab tom qab kho dua tshiab.
Clinically, IPS e.max Press Crown excels nyob rau hauv mimicking tej yam ntuj tso hniav xim thiab opalescence, ua tsaug rau nws multi-txheej ntxoov ntxoo system uas muaj tsib theem translucency thiab opal los. Ntev- cov kev tshawb fawb ntev (txog 3 xyoos) qhia tau tias nws muaj kev ntseeg siab, nrog ntau dua 95% ntawm kev kho dua tshiab uas tswj hwm qib A- qib kev ua tau zoo hauv cov xim ruaj khov, kev hloov pauv tsis zoo, thiab kev noj qab haus huv gingival. Cov khoom siv biocompatibility tseem ceeb ntxiv los ntawm nws cov hlau -dawb muaj pes tsawg leeg, uas tshem tawm kev tsis haum tshuaj thiab MRI cuam tshuam.
Piv rau zirconia, IPS e.max Xovxwm muaj kev zoo nkauj zoo nkauj thaum muab lub zog txaus rau cov ntawv thov tom qab, txhawb nqa los ntawm kev sim tshuaj uas qhia tau tias muaj kev vam meej hauv molar crowns. Cov txheej txheem fabrication integrates CAD/CAM tsim thiab dual- kho resin bonding (piv txwv li, Variolink N), kom ntseeg tau meej marginal sealing thiab txo qhov kev pheej hmoo ntawm cov kab mob caries. Txawm hais tias siv rau ib leeg, peb- txuas txuas, lossis kho cov molars endodontically, IPS e.max Press Crown teeb tsa tus qauv hauv kev kho hniav niaj hnub rau nws txoj kev ua tau zoo thiab tus neeg mob- cov txiaj ntsig zoo.