Cov ntaub ntawv kho hniav yog cov khoom siv raw rau kev npaj tshwj xeeb ntawm cov khoom sib xyaw, cov khoom siv, cov yas thiab lwm yam khoom uas yuav tsum tau ua hauv kev kho hniav thiab kho hniav. Muaj ib tug zoo heev ntawm lawv. Txawm li cas los xij, cov kws tshaj lij tau coj lawv mus rau ib qho kev faib tawm. Yog li no, niaj hnub no muaj cov txheej txheem kev kho hniav thiab pab kho hniav.
Key Features
Muaj ntau qhov yuav tsum tau ua uas txhua yam khoom siv kho hniav yuav tsum ua tau raws li:
- Hygienic. Tag nrho cov ntawm lawv yuav tsum ua tau raws li cov qauv thiab tsis ua rau lub qhov ncauj tsis zoo.
- Toxicological. Lawv yuav tsum tsis txhob khaus lossis ua rau muaj kev tsis haum tshuaj.
- Aesthetic. Lawv yuav tsum rov ua cov ntaub so ntswg ntawm qhov ncauj.
- tshuaj. Lawv cov tshuaj muaj pes tsawg leeg yuav tsum tsis tu ncua. Lawv tsis tuaj yeem corrode.
- Lub cev. Lawv ib txwm muaj zog, tsis hloov lawv qhov loj, thiab kuj hnav-tiv taus.
- Technological. Lawv yooj yim los tuav, ua noj thiab ua kom zoo.
Basic
Cov ntaub ntawv kho hniav yog siv raucreation ntawm prostheses, filling, pab kiag li lawm. Ntawm lawv yog:
- Metals (xws li cov neeg muaj koob muaj npe: kub, nyiaj), nrog rau lawv lub yeeb koob. Niaj hnub no, kwv yees li 500 qhov sib txawv hlau alloys tau siv hauv kev kho hniav. Palladium, kub, platinum - qhov no yog tus qauv. Cov khoom los ntawm lawv yog non-toxic, ruaj thiab tsis corrode. Kawm txog titanium alloys, cov kws tshawb fawb los xaus tias nws yog ib qho zoo heev thiab pheej yig dua lwm txoj rau kub.
- Ceramics. Qhov no suav nrog porcelain thiab sitalls (iav tshuaj). Crowns, txuas hniav, inlays yog tsim los ntawm thawj. Cov yav tas yog siv rau cov hniav prosthetics ntawm anterior dentition.
- Polymers yog ib qho pheej yig tsis tau muaj kev xaiv ruaj khov rau kev tshem tawm cov hniav thiab mus tas li. Cov khoom no kuj siv los kho cov hniav.
- Cov khoom siv sib xyaw. Lawv yog dab tsi filling yog tsim los ntawm. Lawv kuj tau siv rau kev ntsib txhua qhov hlau ntawm cov hlau-yas prostheses. Lawv tuaj nyob rau hauv daim ntawv ntawm cov kua, muab tshuaj txhuam.
Pab pawg
Ntawm ntau theem ntawm kev tsim prostheses, cov khoom siv kho hniav tshwj xeeb yog siv:
- Cov cuab yeej zoo siab xav tau los tsim cov casts, tawv thiab mos daim duab qhia. Vim li ntawd, tus kws kho mob tshwj xeeb tau txais kev ua haujlwm, kuaj mob lossis pab tus qauv ntawm lub neej yav tom ntej prosthesis.
- Cov khoom siv ua qauv yuav tsum tau ua los ua lub cim prosthesis, yas lossis khoom siv.
- Cov khoom siv kho hniav - cov khoom siv kho hniav uas pab kom tau txais cov duab kawgrau tom qab casting. Lawv yuav tsum muaj tej yam ntxwv. Ua ntej, cov ntaub ntawv zoo li no qhia meej contours ntawm cov khoom yav tom ntej. Qhov thib ob, lawv yuav tsum tau yooj yim sib cais los ntawm tus qauv tsim. Thaum kawg, lawv txhua tus tawv sai heev (hauv 10 feeb)
Hauv daim duab, cov ntaub ntawv kho hniav tsis qhia tag nrho lawv cov yam ntxwv. Yog li ntawd, cov kws kho hniav thiab cov kws kho hniav tshwj xeeb xaiv cov khoom siv tsuas yog los ntawm lawv qhov kev paub dhau los. Muaj ob peb lub tuam txhab uas ua rau lawv. Txawm li cas los xij, tsis yog txhua tus tsim cov khoom zoo thiab txhim khu kev qha.
