2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nws tau pom tias sodium phosphate nyob rau hauv cov hniav alginate impression hmoov ua ua tus neeg rov qab los yog teeb tsa lub sijhawm txwv tsis pub. Tsis tas li ntawd, calcium sulfate ion, uas yuav tsum ncaj qha khi rau sodium alginate, thawj zaug reacted nrog phosphate ions ntawm sodium phosphate los tsim insoluble calcium phosphate.
alginate impression khoom yog dab tsi?
Alginate yog dab tsi? Alginate yog cov khoom siv hmoov uas muaj sodium alginate, calcium sulfate, trisodium phosphate, diatomaceous earth, zinc oxide, thiab potassium titanium fluoride. Thaum sib xyaw nrog dej, nws ua rau cov gel zoo li qhov sib xws uas teeb tsa ruaj khov txaus rau pwm.
Cov khoom siv dab tsi yog alginate alginate impression siv rau?
Dental alginate yog cov khoom siv pom zoo uas, thaum sib xyaw nrog dej, hloov mus rau hauv ib qho yooj yim thiab elastic gel siv ua pwm ntawm koj tus neeg mob cov hniav thiab ib puag ncig. Alginate tsim cov pwm kom ntxaws thiab pheej yig dua li lwm qhov kev xaiv.
Yuav ua li cas impressions nrog alginate?
Alginate yog ib qho elastic,
irreversible hydrocolloid impression khoom . Irreversible hydrocolloid impressions tsim ib feem ntawm indirect restorations. Alginate yog ib qho ntawm cov khoom siv kho hniav uas nquag siv tshaj plaws; thiab alginate impression yog ib qho yooj yim, raug nqi, thiab indispensable ib feem ntawm kev kho hniav.
yog dab tsiCov khoom xyaw tseem ceeb ntawm alginate impression?
Kev sib xyaw thiab teeb tsa
Cov khoom xyaw tseem ceeb hauv alginate yog potassium lossis sodium alginate, uas ua rau 15% mus rau 20% ntawm cov hmoov.
Pom zoo:
Cov ntaub ntawv qhia ntawv puas txhawb nqa cov ntaub ntawv kawm?
Cov ntaub ntawv qhia yuav tsum txhawb nqa txoj kev kawm lub tswv yim, cov hom phiaj thiab cov hom phiaj ntawm Cheeb Tsamthiab cov hom phiaj ntawm cov ntaub ntawv kawm uas cov ntaub ntawv yuav raug siv. … Cov ntaub ntawv qhia yuav tsum ua tau raws li cov qauv zoo ntawm cov ntsiab lus tseeb thiab kev nthuav qhia.
Cov ntawv xov xwm pom nyob rau hauv cov ntawv xov xwm nyob qhov twg?
Editorials feem ntau yog luam tawm ntawm nplooj ntawv nplooj siab, hu ua nplooj ntawv kho, uas feem ntau sau cov ntawv rau tus editor los ntawm cov tswv cuab ntawm pej xeem; nplooj ntawv tawm tsam nplooj ntawv no yog hu ua nplooj ntawv op-ed thiab nquag muaj cov lus xav (li no lub npe xav daim) los ntawm cov kws sau ntawv tsis ncaj qha koom nrog … Lub hom phiaj ntawm kev sau ntawv hauv xov xwm yog dab tsi?
Thaum cov ntaub ntawv tshiab cuam tshuam nrog kev muab cov ntaub ntawv qub no hu ua?
Nrog retroactive cuam tshuam, cov ntaub ntawv tshiab cuam tshuam lub peev xwm rov qab cov ntaub ntawv qub. Nrog kev cuam tshuam tsis zoo, nws yog qhov rov qab: cov ntaub ntawv qub cuam tshuam qhov rov qab los ntawm cov ntaub ntawv tshiab tau kawm.
Puas yog cov ntaub ntawv sib tw cov ntaub ntawv raug cai?
Kev tsim "Cov ntaub ntawv cog lus" yog cov ntaub ntawv sau uas txhais lub luag haujlwm, kev lav phib xaub, thiab "Ua haujlwm" raws li Daim Ntawv Cog Lus Tsim Kho, thiab raug cai lij choj rau ob tog (Tswj thiab tus neeg cog lus).
Cov ntaub ntawv twg muaj cov ntaub ntawv bituminous?
Nws muaj ob chav kawm ntawm cov khoom siv bituminous: (1) asph alt; thiab (2) tar. Cov ntaub ntawv no feem ntau yog siv los ua dej-pov thawj sealants, thiab ua cov ntaub ntawv los tuav cov aggregate ua ke nyob rau hauv bituminous pavements. Dab tsi yog cov khoom siv bituminous?
