Qhov tseem ceeb tshaj plaws uas cuam tshuam rau qhov kawg xim ntawm kev kho hniav zirconia block
Apr 11, 2018| Qhov tseem ceeb tshaj plaws uas cuam tshuam rau qhov kawg xim ntawm kev kho hniav zirconia block
Zirconia tam sim no yog qhov feem ntau dav siv tag nrho-ceramic restoration cov khoom nyob rau hauv kev kho hniav hauv khw. Vim nws lub zog muaj zog thiab ua kom zoo nkauj, nws tseem muaj chaw nyob hauv kev kho hniav ntawm kev kho hniav. Ntau cov kev tshawb fawb ntawm cov cuab yeej hluav taws xob thiab biosafety ntawm kev kho hniav crown txuas hniav uas tau ua los ntawm zirconia cov ntaub ntawv tau lees tias lawv muaj peev xwm ua tau raws li kev kho hniav ntawm kev kho hniav. Qee cov kev tshawb nrhiav txog nws cov xim zoo nkauj kuj paub tseeb hais tias zirconia uas tom qab crystallization simulate xim ntawm cov hniav cov hniav los ntawm kev ntxiv hlau oxide hmoov los yog cov kua dej.
Txawm li cas los xij, nyob rau hauv cov tswv yim kev ua, kuj tseem yuav muaj mob uas zirconia hniav cuav tau ua tsis tau zoo vim cov xim txawv. Cov xwm txheej uas cuam tshuam rau xim kawg ntawm zirconia denture hauv cov txheej txheem ntau yog tham hauv qab no:
1. Cov khoom sib txawv
Qhov sib txawv ntawm cov kab hauv plooj (porcelain blocks): qhov sib txawv ntawm cov nplais vaj tse uas ua los ntawm cov tuam ntxhuam sib txawv txawv. Txawm tias qhov ntom nti ntawm cov nplais pob zeb sib txawv ntawm cov khoom sib txawv ntawm tib lub chaw tsim tshuaj. Qhov ceev ntawm cov nplais pob zeb ntawm ntau qhov sib txawv nws txawv nrog cov permeability tom qab sintering thiab qhov tob tob tob thiab concentration ntawm dyeing kua rau lub sij hawm impregnation txheej txheem, uas thaum kawg cuam tshuam cov xim ntawm lub restoration.
Porcelain thaiv additives: Thaum lub sij hawm qhuav ntawm cov plooj (porcelain blocks), ib qho nyiaj me me ntawm lwm cov ntaub ntawv ntxiv rau lawv cov khoom ua thiab cov khoom sib txuas, thiab cov khoom sib txawv ntau tuaj yeem cuam tshuam txog xim ntawm crystallized zirconia crowns.
2. Kev sib txawv
Tam sim no, muaj ob txoj kev los mus rau xim tus zirconia. Ib qho yog qhov thaiv nrig ib ce. Kev ruaj ntseg ntawm cov xim ntawm tus hniav ua los ntawm cov qauv no yog siab, tab sis vim yog qhov sib txawv ntawm qhov sib txawv ntawm cov xim ceramic nyob rau hauv cov xim sib txawv, yuav tsum muaj ntau cov khoom Tshuag. Tshaj ntawm cov plooj (porcelain) yuav tsis siv rau cov nroj tsuag vim lawv cov nqi thiab cov khoom muag.