Hauv kev txhim kho tseem ceeb rau kev kho hniav kho hniav, tag nrho contour zirconia crowns yog hloov kho kev kho hniav niaj hnub, tau txais kev saws sai ntawm cov kws kho mob thiab cov neeg mob thoob ntiaj teb. Cov tom ntej no - tiam rov kho dua tshiab, milled siv CAD/CAM thev naus laus zis los ntawm cov khoom zirconia blocks, tab tom teeb tsa cov qauv tshiab rau kev ua kom zoo thiab zoo nkauj.
Ib qho tseem ceeb ntawm kev tawg yog nyob rau hauv lawv lub zog tshwj xeeb, nrog rau cov qauv tsim ua kom muaj zog flexural txog 1200 MPa. Qhov no ua rau lawv tiv taus cov chipping thiab hnav, hais txog kev sib tw ntev rau cov neeg mob uas hnyav tom lossis bruxism cwj pwm. Cov kws kho hniav hais txog qhov txo qis ntawm kev hloov pauv piv rau cov khoom siv yas yas.
Cov txheej txheem tsim kho tshiab, suav nrog 3D scanning thiab digital qauv, ua kom haum haum nrog cov hniav npaj, tshem tawm cov teeb meem tshwm sim xws li mob -fitting margins lossis occlusion teeb meem. Qhov kev txiav txim siab no tsis yog tsuas yog txhim kho kev ua haujlwm tab sis txuas ntxiv kev txhim kho lub neej ntev txog li 30% hauv kev tshawb fawb soj ntsuam.
Aesthetically, lub crowns tau ua strides nrog translucency theem mus txog 44% ntawm 1 mm thickness, ua ke nrog ib tug dav ntxoov ntxoo ntau yam uas mimics tej yam ntuj tso hniav tsos. Cov neeg mob qhuas lub ntuj saib, thaum cov kev coj ua tau txais txiaj ntsig los ntawm kev siv nyiaj los ntawm kev tshem tawm cov nqi hlau.
Nrog rau daim ntawv thov hla ib lub kaus mom mus rau 12- cov txuas txuas, cov zirconia kho tau sai sai yog qhov kev xaiv zoo tshaj plaws rau kev kho hniav zoo nkauj, zoo nkauj, cim lub sijhawm tshiab hauv kev kho hniav kho hniav.