Dab tsi yog Zirconia Dental Crown? Tus nqi, lwm txoj, Pros thiab Cons
Jan 13, 2020| Cov hniav nyiaj hniav kub yog cov khoom siv ruaj khov uas yog cemented rau ntawm cov hniav tsis muaj zog, puas los yog puas lawm los txhawb thiab khaws cia ua haujlwm. Cov kev kho dua tshiab no kuj tseem siv los txhim kho cov duab, kho kom zoo nkauj lossis zoo nkauj ntawm cov hniav.
Qee lub kaus mom muaj cov khoom siv xws li ceramic, plooj (porcelain) lossis kub, thaum zirconia hniav yas yog tsim los ntawm lub teeb xim xim ceramic hu ua zirconium oxide.
Cov txiaj ntsig ntawm zirconia
Zirconia, dawb crystalline oxide daim ntawv ntawm zirconium, yog suav hais tias yog Pawg 4 cov khoom. Qhov no npe ntawm lub sij hawm lub sij hawm txhais tau tias zirconium yog ib feem ntawm tsev neeg titanium. Nws cov tshuaj muaj pes tsawg leeg ua rau nws ruaj khov heev.
Cov khoom no muaj zog npaum li cas? Dr. Stirneman piav qhia tias, "Ntxiv rau kev siv ntawm cov hniav, zirconium kuj tseem nrov rau ntau yam prostheses hauv kev phais ntawm lub hauv caug, lub duav, ntiv tes, thiab pob ntseg." Thiab txij li cov hlau no tsis tsim cov tshuaj lom rau cov ntaub so ntswg nyob, cov neeg mob yuav tsis muaj kev tsis haum tshuaj lossis teeb meem tshwm sim los ntawm lawv lub cev tsis lees txais cov khoom.
Zirconia zoo li translucent, uas ua rau lub ntuj-zoo li ntau dua. Cov khoom no kuj tsim nyob rau hauv ntau yam ntxoov ntxoo, ua kom yooj yim kom haum raws li cov xim ntawm cov hniav ib puag ncig. Thiab raws li ib qho ntxiv, nws muab cov stain zoo dua li acrylic lossis cov khoom sib xyaw (porcelain thiab lwm yam khoom siv ceramic fused rau lub hauv paus hlau).
Zirconia hniav yas muaj lwm qhov tshwj xeeb zoo dua li lwm hom yas yas: cov kws kho hniav tuaj yeem ua rau lawv tus kheej hauv chaw ua haujlwm, yog li txo lub sijhawm tos thiab tsis txhob xav tau cov yas yas ib ntus.
Nrog kev pab los ntawm CAD/CAM thev naus laus zis, kev kho hniav milling tshuab muaj nyob rau ntawm cov chaw kuaj hniav feem ntau thiab hauv qee qhov chaw kho hniav. Lub crowns yog milled ncaj qha los ntawm cov khoom blocks ntawm zirconia. Yog li ntawd, lawv xav tau cov cuab yeej siv tsawg, sijhawm, thiab cov khoom siv los tsim dua li lwm hom yas. Tom qab lawv raug milled, lawv tuaj yeem hloov kho kom haum rau tus neeg mob cov hniav thiab cemented tib hnub - cov neeg mob tsis tas yuav rov qab mus rau ntau tshaj ib lub sijhawm.
Disadvantages ntawm zirconia crowns
Muaj ob peb qhov tsis zoo rau zirconia hniav yas. Txawm hais tias muaj kev txhim kho kho hniav tsis ntev los no, cov xim ntawm zirconium yuav tsis haum cov xim ntawm tus neeg mob tus hniav. Yog tias tus neeg mob tau txais lub kaus mom ntawm tus hniav pem hauv ntej, lawv yuav nyiam lithium disilicate ceramic los yog porcelain crown xwb.
Tsis tas li ntawd, tom qab hom no muab tso rau hauv lub hau, nws yuav nyuaj rau cov kws kho hniav kom pom qhov lwj hauv qab. Yog hais tias kab noj hniav tsim, lub crown yuav tsum tau muab tshem tawm thiaj li yuav kho cov hniav.
Tsis tas li ntawd, thaum lub crown nws tus kheej yog yuav luag indestructible, lub crowns 'cov ntaub ntawv nyuaj yuav rub tawm tsam thiab puas cov hniav nyob ib ncig ntawm.
Zirconia crowns, feem ntau, yog ib qho ntawm cov khoom kim tshaj plaws ntawm cov yas. Txawm li cas los xij, yog tias koj khaws cov yas kom zoo, nws yuav tsim nyog rau kev nqis peev mus ntev. Tus nqi qis qis dua yuav nti thiab koom nrog kev siv nyiaj ntxiv rau lub sijhawm ntev.
Yuav ua li cas zirconia crowns nqi?
Cov nqi sib txawv, nyob ntawm thaj tsam thiab qhov kev paub ntawm koj tus kws kho hniav. Tus nqi kuj tseem txawv nyob ntawm koj qhov kev tuav pov hwm kho hniav - koj tuaj yeem them tsawg dua yog tias koj tus neeg tuav pov hwm txiav txim siab tias koj lub kaus mom yog qhov tsim nyog rau kev kho mob tsis yog cov tshuaj pleev ib ce nkaus xwb.
Feem ntau, cov neeg mob tuaj yeem xav tias yuav them nyiaj ntau dua rau zirconia crowns dua li cov plooj (porcelain) thiab cov kaus mom kub. Hu rau koj lub chaw kho hniav thiab lub tuam txhab kev pov hwm rau kev xaiv kev them nqi thiab kev sib piv nqi