Cov txheej txheem sib txawv yog cov txha mos mos, qog cov txha hniav tawv tawv, thiab tsis muaj xim.
Mos txha hniav laus: Cov txha hniav laus xim saum npoo muaj pob txha ua rau muaj kev xav, uas yog ib qho txheej txheem hauv peb kev lag luam. Cov txha hniav muag muag muag feem ntau tau sib tham nrog cov txha hniav laus. Cov xim thiab cov npoo hlau ntawm cov txha hniav tawv tawv yog ze li ntawm. Cov txheej txheem av uas muaj cov txheej txheem yooj yim dua li cov txheej txheem ua kom tawv, thiab ib tus txheej txheem sib tsoo tsawg dua, yog li tus nqi yuav qis dua cov txha hniav laus.
Tawv enamel:Peb lub tuam txhab cov txheej txheem feem ntau yog qog tawv enamel, tsis yog cov txha hniav laus. Tus nqi ntawm cov txha hniav tawv tiag tiag yog qhov siab. Tom qab ntawd, cov txheej txheem txheej txheem loj tiag tiag tau hloov los ntawm kev qog cov txha hniav laus. Cov xim thiab cov npoo hlau ntawm cov qog cov txha mos yog ze rau.
Tsis muaj xim: Qee cov khoom lag luam tsis yog xim, thiab tus nqi yuav pheej yig dua cov txha mos muag thiab tawv enamel. Tam sim no cov nqi xim rau cov nqi tseem ceeb ntawm tag nrho cov khoom.
Cov khoom siv tshwj xeeb:Peb kev lag luam yuav muaj qee tus kws ua haujlwm tshwj xeeb. Siv cov khoom siv tes ua no yuav ua rau cov khoom lag luam zoo nkauj dua thiab tshiab. Cov khoom siv tes ua tshwj xeeb suav nrog cov xim pob tshab, glitter, offset luam ntawv, thiab lwm yam.
Lub Sijhawm Post: Lub Tsib Hlis-04-2021