Rau kev sib tsuam hauv kev kho hniav yog ib qho khoom siv tshwj xeeb - siv. Nws muaj cov khoom tsim nyog los tig lub meej mom thiab xim ntawm cov hniav. Cov khoom sib xyaw ua ke yog tsim los ntawm tib lub cev muaj pes tsawg leeg. Yav dhau los, lawv cov kev tsis zoo siab heev, thiab lawv tsis zoo rau feem ntau ntawm cov yeeb yam rau cov plag tsev thiab cov kab xaum. Cov kab ke niaj hnub no yeej zoo tuaj, ntxiv rau, qee yam ntawm nws hom kuj muaj cov khoom ua si, nrhiav nws cov yam ntxwv zoo.
Cov vojvoog sib xyaw yog dab tsi?
Qhov kev kho kom rov qab kho ntawm cov hniav siv tau yog 2 txoj hauv kev:
- orthopedic (indirect);
- tshuaj kho (ncaj qha).
Hauv thawj cov ntaub ntawv, qhov kho kom zoo tshiab yog zoo tib yam rau cov kaus hniav hlau - los ntawm cov hniav npaj, cov pwm raug tshem tawm, uas ua haujlwm ua tus qauv rau cov kws kho mob hauv cov txheej txheem uas ua cov khoom nkig ua rau nkev mus rau hauv ntej thiab txiav cov hniav.
Cov khoom nruab nrog ncaj nraim yog ua los ntawm tus kws kho mob thaum lub sijhawm txais tos, ncaj qha ntawm cov hniav. Qhov zoo ntawm qhov kev siv tshuab no yog qhov tseem tsawg heev ntawm txoj hlua khoob. Txhim kho qhov ntawd tsuas yog ib feem ntawm cov hniav uas siv cov ntaub ntawv txuas nrog.
Txawm li cas los xij, cov voj tsis ncaj los yog orthopedic muaj zog dua, vim cov kws kho hniav yuav tuaj yeem ua rau thaj chaw kub kub thiab siab, uas tshem tawm thaum ua kom rov zoo nkauj hauv lub qhov ncauj.
Kev sib xyaw cov khoom muaj ib co kev tsis zoo nyob rau hauv kev sib piv nrog cov khoom ua paj:
- ceev hnav (3-7 xyoo);
- maj mam hloov xim;
- qhov kev xav tau rau kev ua polishing;
- kev muaj peev xwm los tau pes tsawg hauv cov khoom noj khoom haus, nicotine thiab dej haus;
- siab tawg;
- tsis zoo nkauj zoo nkauj ntawm qhov kawg;
- qes tsis kam mus haus cawv;
- pigmentation ntawm ciam teb ntawm sab caj npab thiab ntuj txha hniav laus.
Dua li ntawm cov lus saum toj no, cov ntsiab lus piav qhia yog ntsia tau ntau zaus dua cov khoom qub. Qhov no yog vim tus nqi qis dua cov paib, lawv pheej yig dua 2 zaug.
Tsis tas li ntawd, cov kws kho mob ncaj nraim tuaj yeem ncaj nraim ntawm tus kws kho hniav kev txais tos, rau 1 lub sijhawm sib tham, thiab thaum siv porcelain thiab ceramics nws yuav tsum tau mus ntsib kws kho mob ob zaug thiab tos rau sab hauv.
Yuav kho cov hniav kom zoo li cas nrog cov khoom sib xyaw ua ke?
Yog hais tias siv cov tshuab ntxuav hniav ntawm orthopedic, lawv yog thawj zaug ua rau grind thiab npaj lwm qhov chaw (txog 2,5 hli). Tom qab ntawd, cov nraub qaum raug tshem tawm, raws li tus kws kho hniav ntsees ua rau cov neeg veneers. Txhawm rau tiv thaiv qhib kab npo thiab dentine, muab ntim rau ib ntus.
Tom qab 7-10 hnub nram qab no manipulations nram no:
- Kev rho tawm ntawm tus hniav kom raug kho nrog latex, nws npaj.
- Daim ntawv thov ntawm cov nplaum rau ntawm qhov veneer thiab cov organic nqaij.
- Txhaws lub hau kom nrawm nruj nreem rau ntawm tus hniav.
- Cov nplaum txhuam (polymerization).
- Sib tsoo thiab polishing ntawm cov pob qij txha ntawm cov veneer thiab cov hniav.
Qhov ncaj qha yog qhov sib npaug kiag rau lub installation ntawm orthopedic pawm, tsuas yog nws tsis tas ua haujlwm ua ntej ntawm cov kws kho hniav. Tus kws kho hniav-kws kho mob thaum lub sijhawm kev txais tos grinds cov cheeb tsam uas tsim nyog, xaiv cov xim ntawm lub composite kom nws coincides nrog lub ntuj ntxoov ntxoo ntawm tus niam laus, thiab restores tus hniav. Tus neeg mob yuav tswj tau tag nrho cov txheej txheem.
Yuav tu li cas rau cov khoom sib sau ua ke?
Cov teeb meem tshwj xeeb hauv qhov ncauj huv si tsis tuaj yeem tshwm sim.
Nws yog txaus txhuam koj cov hniav 2 zaug hauv ib hnub, tsuas yog cov tshuaj muab tshuaj txhuam yuav tsum tsis xaiv yam tsis muaj abrasive. Nws yog ib qho tseem ceeb kom tshem tawm cov quav hniav ntawm qhov chaw nruab nrab los ntawm kev siv cov xov hauv lub sijhawm.
Ua kom muaj kev pab cuam lub neej ntawm cov veneers ntawm lub composite, koj tuaj yeem, yog tias tsis tshaj lawv noj zaub mov (caramel, nutshell), tsis txhob tawg hauv lub puab tsaig.
Nws tseem yuav tsum tau mus ntsib tus kws kho hniav rau kev tiv thaiv niaj hnub, ib zaug txhua 5-12 lub hlis.
Ua li cas rau cov hniav thiab cov khoom sib xyaw?
Kev tsim nyog ntawm linings los ntawm ib tug composite tsis entail yam tsis zoo. Qhov teeb meem tsuas yog qhov xav tau rau lub sij hawm kho dua tshiab ntawm cov veneers thaum lawv hnav tawm, nyiam dua los ntawm tib tus kws kho mob uas tau ua rau lawv pib. Txij lub sij hawm, nws yuav tsum tau hloov mus rau lub installation ntawm cov yas los yog lwm hom hluav taws xob , vim nrog txhua daim pauv cov ntaub ntawv pauv hniav ntau dua.