Zirconium oxide muaj keeb kwm ntev ntawm kev siv hauv kev kho hniav thiab yog qhov txawv ntawm nws lub zog thiab kev sib raug zoo nrog lub ntuj tsim. Tag nrho cov no tau lees paub los ntawm ntau qhov kev tshawb fawb soj ntsuam.
Txoj Kev Pabcuam ntawm Cov Ncej
Zirconium oxide yog siv los tsim ntau cov qauv, tshwj xeeb, cov txheej txheem raws li nws muaj qhov raug zoo heev. Tag nrho cov no tau ua tiav ua tsaug rau kev siv cov cuab yeej kho mob niaj hnub no. Cov khoom siv raws li cov khoom siv no yog cov khoom siv ruaj khov, sab nraud tsis muaj leej twg tuaj yeem paub qhov txawv ntawm cov khoom cuav los ntawm cov hniav tiag.
Zirconium oxide thav duab yog kab nrog cov plooj (porcelain) tshwj xeeb, uas yog los ntawm ntuj tsim. Tag nrho cov no ua rau cov khoom lag luam yooj yim zoo tshaj plaws piv rau cov khoom siv ceramic-hlau uas siv hauv kev kho hniav.
Zirconium oxide inlay, hniav hniav, veneers thiab txuas hniav yog tag nrho cov nqi rau lawv cov durability thiab biocompatible khoom.
Thiab cov thav duab raws li cov khoom siv no tuaj yeem txo qhov tuab ntawm cov phab ntsa ntawm cov yas, raws li qhov tob ntawm kev ua cov ntaub so ntswg nyuaj kuj txo. Ua tsaug rau qhov no, kev txhawb nqa hauv lub qhov ncauj tuaj yeemtxuag thiab ua kom cov pob qij txha yooj yim dua.
Txheej txheem ntawm cov hlau tsis muaj ceramics
Zirconium oxide yog siv los tsim cov yas uas aluminium ntxiv. Lawv kuj hu ua non-metal. Nyob rau hauv prosthetics niaj hnub no, lawv tau dav heev thiab txawv los ntawm lawv lub zog siab. Lawv lub ntsiab feature yog qhov tsis muaj cov khoom siv hlau thiab cov qauv tsim kom zoo nkauj.
Hlau-dawb yas ntawm zirconium thiab aluminium oxide yog qhov tshwm sim ntawm kev taw qhia ntawm cov thev naus laus zis niaj hnub hauv kev kho hniav. Nws tsis yog tsuas yog ruaj, lom nrog cov hniav, tab sis kuj translucent. Outwardly, tsis muaj leej twg yuav xav tias qhov no tsuas yog lub kaus mom, nws zoo li ntuj.
Creating a metal-free crown
Cov ceramics no tau siv dav hauv kev tsim khoom ntawm cov yas tsis tsuas yog tag nrho cov yas, tab sis kuj yog cov khoom siv thiab cov veneers. Yog hais tias yav tas los ntsia thawv ntim tau darkened los yog cov yas qub tau hloov xim, ces cov zirconium oxide, uas nyob ntawm nws lub hauv paus, yuav pab tau kom rov ua dua lawv.
Thaum ua thav duab, tus kws kho mob pom zoo rau nws tus neeg mob txoj kev kho hniav, ces tus qauv siv quav ciab yog tsim los ntawm nws lub hauv paus. Nws yog scanned thiab khaws cia rau hauv lub computer, ces yuav tsum tau tsim nyob rau hauv ib tug peb-dimensional daim ntawv thiab tsim los mus rau hauv tus account yav tom ntej shrinkage. Tom qab ntawd lub thav duab tau muab tso rau hauv lub tshuab milling tshwj xeeb, qhov twg nws yog machined los ntawm zirconium oxide.
Tom qab ntawd cov qauv yog sintered hauv lub cub tawg, tau txais lub zog. Thiab thaum kawg lub moj khaumveneered nrog ceramic loj. Yog li ntawd, biocompatible hniav hniav crowns tau txais, zirconium oxide plays lub luag haujlwm tseem ceeb hauv tus yam ntxwv no.
Imitation
Zirconium oxide prostheses feem ntau pom tau zoo los ntawm tib neeg lub cev. Lawv ruaj khov thiab txhim khu kev qha, tsis muaj kev pheej hmoo ntawm kev tsis lees paub thiab kis kab mob.
Imation ntawm cov hniav ntuj tau ua tiav vim qhov tseeb tias zirconium oxide compound muaj cov xim dawb. Thaum txhim kho cov hlau-ceramic crown, qhov no tsis tuaj yeem tau txais, vim tias lub thav duab ntawm cov qauv yuav muaj xim hlau. Thiab thiaj li hais tias cov hlau tsis ci los ntawm cov ceramics, lub crowns yog nruab nrog ib tug tshwj xeeb txheej. Yog li ntawd, xws li prostheses tsis kis lub teeb, thiab tsis muaj xim tob nyob rau hauv lawv. Cov pos hniav tsis illuminated los ntawm sab hauv, raws li nyob rau hauv nws tej yam ntuj tso daim ntawv, thiab muaj ib tug txawv teb chaws lub cev nyob rau hauv lub qhov ncauj yuav tshwm sim.
Qhov zoo ntawm kev tsim khoom tsis siv neeg
Ntxiv mus, lub yas tsis muaj hlau yog tsim los ntawm cov cuab yeej tshwj xeeb, uas txawv kiag li los ntawm phau ntawv casting ntawm ceramic-hlau cov khoom. Tag nrho cov txheej txheem yog ua tiav.
Qhov kev tso cai sib txawv ntawm cov pob qij txha thiab cov hniav nws tus kheej tuaj yeem yog los ntawm 100 txog 300 microns. Los ntawm txoj kev siv thev naus laus zis tshiab tshaj plaws siv hauv kev tsim cov khoom lag luam los ntawm zirconium oxide, nws tau raug txo mus rau 30 microns. Qhov no txhais tau tias qhov siab tshaj plaws nyob rau hauv kev sib txuas ntawm cov hniav thiab prosthesis.
Bridge making
Txawm tias qhov tshwj xeeb ntawm prosthesis tuaj yeem ua tautsis muaj hlau ncej. Ib tus choj ua los ntawm zirconium oxide kuj tuaj yeem ua tau, tab sis nws yuav tsis tuaj yeem muaj qhov ntev, zoo li ib txwm. Nws cov ncej, tsis zoo li hlau, yuav pob tshab.
Tsis tas li, zirconium oxide tuaj yeem siv tau thaum lub sij hawm cog hniav prosthetics yog tias tus neeg mob xav tau kev zoo nkauj siab. Thiab, raws li tau hais ua ntej lawm, nws tuaj yeem siv los ua txhua yam ntawm prosthesis.
Nyob sab
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm zirconium oxide crowns yog lawv qhov zoo nkauj thiab ntxim nyiam. Yog hais tias ceramic-hlau prostheses yeej ib txwm muaj ib tug cwj pwm ntxoov ntxoo, ces nyob rau hauv cov ntaub ntawv no nws muaj peev xwm xaiv tau nyob rau hauv lub theem ntawm lub moj khaum nyob rau hauv thiaj li yuav ua raws li tag nrho cov xim ntawm tus neeg mob cov hniav. Txawm hais tias lub teeb pom kev zoo li cas, cov hniav yuav nyob twj ywm pob tshab. Tsis tas li ntawd, tsis zoo li cov hlau, uas nyhav rau qhov tsaus ntuj thiab deform thaum lub sijhawm, zirconium oxide yuav nyob zoo ib yam txawm tias ntau xyoo.
Tsis tas li, ntau tus neeg feem ntau yws txog qhov tsis muaj xim ntawm cov pos hniav ntawm ib sab ntawm cov hlau-ceramic crowns. Qhov no tshwm sim vim lub fact tias cov thav duab ntawm cov qauv tsis zoo rau cov ntaub so ntswg nyob ib sab ntawm nws. Tau kawg, cov pos hniav tsis tig liab los yog ua cyanotic nyob rau hauv txhua rooj plaub, tab sis feem ntau. Prostheses siv zirconia yuav tshem tawm qhov tshwm sim no.
Compatibility
Zirconium oxide yog qhov zoo vim tias nws muaj cov khoom hypoallergenic. Ua ntej cov khoom siv no tau siv hauv kev kho hniav, nws feem ntau siv rau hauvtsim lub taub hau rau lub duav prostheses kom lawv lub zog.
Kev ua xua tshwm sim hauv cov neeg mob thaum txhim kho cov hniav cuav lossis inlays feem ntau tshwm sim ntau zaus. Ntxiv mus, cov kev cuam tshuam no tuaj yeem tshwm sim txawm tias siv cov hlau zoo (kub, platinum, palladium, thiab lwm yam). Rau ntau tus neeg ua xua, zirconium oxide crowns lossis txuas hniav yog tib txoj hauv kev los txhim kho lawv cov hniav.
Feem ntau qhov teeb meem thiab rhiab heev ntawm cov hniav. Thaum lub sij hawm prosthetics, xws li ib tug tshwm sim tuaj yeem cuam tshuam nrog lub installation ntawm txhua yam koj xav tau. Yog li, thaum txhim kho crowns yam tsis muaj kev siv hlau, qhov kev hloov pauv hloov pauv hloov tau zoo dua. Tag nrho cov no yog vim lub fact tias zirconium oxide yog ib qho zoo heev ntuj tshav kub insulator thiab muaj peev xwm tiv thaiv cov hniav los ntawm kub hloov. Yog tias lub pob zeb tau tsim los ntawm nws lub hauv paus, tus neeg mob yuav tsis raug kev kub ntxhov.
Lwm yam khoom zoo
Zirconium oxide yog ib feem ntawm cov txhuas thiab ruaj khov los ntawm yttrium, uas tom qab ua cov khoom raws li nws muaj zog thiab lub teeb. Tsis tas li ntawd, thaum microcracks tshwm rau saum npoo, cov qauv saum npoo yog kho tus kheej ntawm qib molecular.
Zirconium crowns yog tsim tsis tau tsuas yog rau ntawm cov hniav pem hauv ntej, tab sis kuj nyob rau sab hniav.
Cov khoom siv no, ntawm lwm yam, suav tias yog qhov zoo tshaj plaws rau kev kho qhov siab tom. Nws tsis muaj porosity, tsis zoo li cermets, yog li ntawdantagonist erasure qis dua.
Thiab qhov tseeb tias anatomical crowns tuaj yeem milled tso cai rau cov kws tshaj lij profile kom ua tiav lawv thaum lub sij hawm siv cov khoom siv txee uas kho qhov siab tom.
Kev ua cov ntaub so ntswg tawv thaum txhim kho cov hlau tsis muaj hlau yog qhov tsawg. Zirconium oxide kho hniav moj khaum tsuas yog 0.4 hli tuab. Ua tsaug rau qhov no, koj tuaj yeem zom lawv tsawg thiab txawm tias ua cov hniav cuav rau cov neeg nyob.
Disadvantages thiab contraindications
Zoo li lwm yam khoom siv rau kev kho hniav, zirconium oxide prostheses muaj lawv tus kheej contraindications. Txawm hais tias nyob rau hauv cov ntaub ntawv no tsuas muaj ob ntawm lawv, uas tsis yog li ntawd:
- bruxism;
- pronounced tob tom.
Hauv lwm qhov xwm txheej, koj tuaj yeem txhim kho cov yas, txawm tias tus neeg mob nqa daim ntawv pov thawj ntawm kev ua xua rau qee yam ntawm cov pob qij txha. Nws yuav tsis siv rau cov hlau tsis yog hlau.
Raws li qhov tsis zoo ntawm cov khoom raws li zirconium oxide, lawv zoo li tsis muaj nyob. Txawm li cas los xij, qhov tseem ceeb thiab tsuas yog ib qho yog lawv cov nqi siab. Xws li tus nqi tsim tsis tsuas yog vim kev siv qee yam khoom, tab sis kuj yog qhov nyuaj ntawm kev tsim cov yas. Ntawm no, tus kws tshaj lij yuav tsum muaj kev txawj ntse thiab raug cob qhia hauv cov txheej txheem tshwj xeeb ntawm qib siab.
Yog tus neeg mob tsis muaj nyiaj rau cov khoom kim raws li zirconium oxide, ces nws tuaj yeem muab nws cov kev xaiv nyiaj txiag raws liiav ua. Crowns uas ruaj khov nrog yttria yog kim dua.
Raws li koj pom, kev txhim kho niaj hnub hauv kev kho hniav tuaj yeem txhim kho lub neej ntawm cov neeg uas xav tau hniav hniav thiab tsis zam rau lawv zoo.
