Kev ceeb toom tshwj xeeb: Muaj qhov sib txawv ntawm iav ceramics thiab zirconium dioxide nyob rau hauv tag nrho -ceramic crown cov ntaub ntawv
Ntau thiab ntau tus neeg tab tom pib siv tag nrho -ceramic crowns rau kho hniav kom zoo nkauj, tab sis koj puas paub tiag tiag seb cov hniav incisor yog ua los ntawm zirconia lossis iav-ceramic tag nrho-ceramic hniav? Tsis tsuas yog qhov sib txawv ntawm tus nqi ntawm ob, tab sis kuj muaj cov khoom sib txawv thiab cov khoom sib txawv! Cov lus teb yog hauv qab no
Ob lub iav ceramics thiab zirconium dioxide feem ntau yog siv tag nrho -ceramic hniav yas cov ntaub ntawv.
★ iav-ceramic tag nrho-ceramic hniav siv kub tuag-casting porcelain crowns thiab iav-permeable porcelain crowns, uas yog polished los ntawm CAD/CAM technology; nws hardness yog hais txog 400 MPa, cov xim yog pob tshab, thiab nws zoo ib yam li cov hniav tiag tiag, yog li feem ntau siv rau cov hniav anterior kho.
★Cov zirconia tag nrho-ceramic hniav siv CAD/CAM thev naus laus zis los zom cov yas puab, thiab tom qab ntawd ntxiv txheej txheej ntawm cov plooj (porcelain) los ntawm cov txheej txheem porcelain los ua kom tiav tag nrho -ceramic hniav; lub hardness yog siab li 1200 MPa los yog ntau tshaj, lub siab kuj yog zoo, thiab lub zog yog zoo. Siab dua, feem ntau yog siv rau hauv thaj tsam ntawm cov hniav tom qab qhov chaw zom zaub mov ntau dua.
Yog li, nws puas zoo dua los ua zirconium dioxide tag nrho -ceramic hniav lossis iav-ceramic tag nrho-ceramic hniav?
Lub zog ntawm cov khoom siv zirconia yog qhov zoo heev, tab sis cov nyhuv zoo nkauj tsis muaj zog; Cov nyhuv zoo nkauj ntawm cov iav ceramic yog qhov zoo tagnrho, tab sis lub zog tsuas yog li 1/3 ntawm zirconia.
Xav txog qhov zoo nkauj, iav -ceramic tag nrho-ceramic hniav raug pom zoo rau kev kho sab hauv. Txawm hais tias lub hardness ntawm iav ceramics qis dua, nws nyob ze rau qhov hardness ntawm cov hniav tiag tiag thiab tuaj yeem hnav nrog cov hniav ntuj.
Lub hardness ntawm zirconia tag nrho -ceramic cov hniav yog ntau dua li cov hniav ntuj thiab yuav tsum tau siv los occlude cov hniav tom qab nyob rau hauv lub ntiajteb txawj nqus concentration cheeb tsam. Thaum ntsib ib tug loj tom quab yuam, nws tseem yuav nyob twj ywm motionless.
Txawm hais tias muaj qhov sib txawv ntawm kev siv zirconium dioxide thiab iav -cov ntaub ntawv ceramic rau txhua yam -ceramic dental crowns, tsuav yog lawv nruj, qauv, thiab ua haujlwm kom raug, tsim thiab tsim los ntawm cov kws kho mob tsis tu ncua, ntau dua 75% ntawm lawv muaj ntau tshaj 20 xyoo ntawm lub qhov ncauj. Yog tias koj ceev faj Lub neej tu siab yuav ntev dua, thiab qee qhov yuav kav mus ib txhis!
