Thaum tus kws kho hniav txiav txim siab los teeb tsa lub kaw lus ntawm nws cov hniav, nws thawj zaug xaiv cov hlau txhuam hniav rau tus neeg mob. Nyob rau hauv thawj theem, cov ntaub ntawv uas muaj ib tug high degree ntawm tsis kam mus deformation feem ntau yog siv, thiab nyob rau hauv lub tom ntej no theem, ntau nruj thiab check xov hlau yog siv.
Device Description
Orthodontic hlau yog cov qauv siv hauv kev kho hniav thiab tshuaj feem ntau. Nws yog siv los txhim kho qhov txuas ntawm cov khoom siv orthodontic rau cov hniav. Cov hlau muaj ib tug pas nrig ua hauj lwm tsim los muab tso rau hauv lub qhov ncauj kab noj hniav.
Qhov tshwm sim ntawm kev siv cov hlau txhuam hniav yog txhawm rau tshem tawm qhov xav tau los qhwv cov hlau nyob ib puag ncig ntawm tus ncej ntawm cov ntsia hlau orthodontic.
Dimensions thiab khoom siv rau kev tsim khoom
Feem ntau siv hauv kev kho hniav orthodontic stainless hlau hlau. Qhov no yog vim qhov tseeb tias stainless hlau muaj tus nqi qis thiab zoo rigidity. Txawm li cas los xij, feem ntau nws yog siv nyob rau theem tom qab ntawm kev kho mob.
Xwb, lub cuab yeej tuaj yeemua los ntawm ntau yam alloys uas tuaj yeem ua rau cov khoom tsis zoo. Feem ntau cov alloy hauv kev tsim cov hlau orthodontic yog titanium-nickel. Cov kev cuam tshuam ntawm cov tshuab no yuav tsis ua rau deformations, txawm li cas los xij, nws tus nqi yog siab heev.
Txawm hais tias cov xov hlau nickel-titanium muaj qhov elasticity zoo, lawv tsis tuaj yeem tiv thaiv cov hniav los ntawm cov khoom siv dag zog. Kuj tseem muaj kev hloov kho ntawm cov hlau no. Hauv qhov no, tom qab cua sov, nickel-titanium orthodontic hlau yuav hloov tau yooj yim dua thaum txias.
Cov Hlau kuj tuaj yeem sib txawv ntawm qhov loj. Yog tias lub npe 0.016 nti (0.4 mm) sau rau ntawm pob, ces nws yuav yog puag ncig, thiab yog 0.016x0.022 nws yuav yog square.
Properties
Ib lub xaim orthodontic kom zoo yuav tsum muaj cov khoom hauv qab no:
- Elasticity - tiv thaiv kev tawg ntawm cov khoom thaum siv.
- Tsis muaj kev sib txhuam.
- Kev sib cuam tshuam nrog lwm cov ntaub ntawv - ua rau nws tuaj yeem muab cov hlau txuas nrog lwm yam khoom siv.
- Elasticity - vim yog lub zog seem, cov hlau yuav tsis deform tom qab khoov.
- YBiocompatibility.
- Rigidity - nyob ntawm txoj kab uas hla ntawm cov khoom. Qhov loj dua, qhov nruj dua.
Nrog tag nrho cov kev ntsuas saum toj no, orthodontic hlau dhau los ua cov cuab yeej zoo tshaj plaws rau kev kho hniav.
