Video: Cov khoom siv kho hniav zoo li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov ntaub ntawv cuam tshuam yog siv rau hauv kev kho hniav sau cov ntsiab lus ntawm intraoral qauv los fabricate ib tug reproduction ntawm cov hniav thiab cov ntaub so ntswg mos rau kev tsim kho ntawm kev kho hniav cov hniav.
Xav txog qhov no, cov khoom siv dab tsi yog siv rau kev kho hniav?
Alginate yog ib qho ywj pheej, tsis hloov pauv tau hydrocolloid cov khoom zoo siab . Irreversible hydrocolloid kev xav tsim ib feem sib cais tsis tau ntawm kev kho ncaj qha. Alginate yog ib qho ntawm feem ntau siv cov ntaub ntawv kho hniav ; thiab alginate kev xav yog ib qho yooj yim, raug nqi, thiab qhov tseem ceeb ntawm kev kho hniav xyaum.
Ib tus kuj tseem yuav nug tau tias, 3 hom kev nyiam kho hniav zoo li cas? Muaj peb yam tseem ceeb ntawm kev nyiam kev kho hniav - ua ntej, zaum kawg, thiab sau npe tom.
- Kev xav ua ntej yog qhov tsim tawm ntawm tus neeg mob lub qhov ncauj.
- Qhov kev xav zaum kawg muaj cov ntsiab lus tseeb ntawm cov hniav txheej thiab lawv cov ntaub so ntswg ib puag ncig.
Tom qab ntawd, ib tus tuaj yeem nug, dab tsi yog cov khoom siv kho hniav zoo tshaj plaws?
Qhov nyiam elastomeric cov ntaub ntawv zoo ntawm kev ua lag luam yog polyvinyl siloxanes (PVS) thiab polyethers (PE). Polyethers paub txog lawv cov khoom hydrophilic thiab zoo flowability. Polyvinyl siloxanes, ntawm qhov tod tes, tau paub txog lawv qhov zoo tshaj plaws elasticity, siab dua lub zog thiab ruaj khov.
Dab tsi yog cov khoom siv kev xav zoo nkauj hu ua?
Nws tau hais tias thawj zaug kev xav yog txhua yam, thiab qhov no yog qhov tseeb tshwj xeeb hauv kev kho hniav. Kab lus no yuav tham txog 3 feem ntau ntau kev faib tawm ntawm cov ntaub ntawv zoo : polyether (PE), vinyl polysiloxane (VPS), thiab hybrid khoom hu ua yas polyether siloxane (VPES).
Pom zoo:
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