Video: Dab tsi yog enamel prism?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntsuas 4–8 Μm txoj kab uas hla, ib hniav txha hniav laus , npe hu ua enamel prism , yog ib tug nruj ntim ntawm hydroxyapatite crystals nyob rau hauv ib tug qauv tsim. Txha hniav laus pas nrig tau pom nyob hauv kab raws tus hniav, thiab hauv txhua kab, qhov ntev axis ntawm enamel rod feem ntau yog perpendicular mus rau lub hauv paus hniav.
Ib yam li ntawd, cov txha hniav laus ua los ntawm dab tsi?
Cov hniav txha hniav laus ntawm koj cov hniav yog qhov nyuaj tshaj plaws thiab feem ntau yog cov tshuaj ntxhia hauv koj lub cev lub cev . Nws npog txheej txheej ntawm txhua tus hniav thiab nws yog qhov pom feem ntau ntawm cov hniav. Cov enamel yog tsim los ntawm cov zaub mov feem ntau, feem ntau hydroxyapatite.
Tom qab ntawd, lo lus nug yog, koj puas tuaj yeem kho hniav hniav? Ib zaug hniav enamel yog puas, nws tsis tuaj yeem nqa rov qab. Txawm li cas los xij, tsis muaj zog enamel tuaj yeem rov qab mus rau qee qhov kev txhim kho nws cov ntsiab lus ntxhia. Txawm tias cov tshuaj txhuam hniav thiab cov tshuaj ntxuav qhov ncauj tau yeej tsis rov tsim kho ” cov hniav , lawv tau pab txhawb rau txoj kev remineralization no.
Kuj nug, pes tsawg enamel nyob ntawm tus hniav?
Kev saib xyuas thiab kho tib neeg hniav enamel yog ib qho ntawm thawj qhov kev txhawj xeeb ntawm kev kho hniav. Hauv tib neeg, txha hniav laus Nws txawv nyob rau hauv thickness tshaj qhov saum npoo ntawm lub hniav , feem ntau thickest ntawm cusp, mus txog 2.5 hli, thiab thinnest ntawm nws ciam teb nrog cov cementum ntawm cementoenamel hlws ris (CEJ).
Lub luag haujlwm ntawm enamel yog dab tsi?
Cov hniav txha hniav laus yog cov khoom uas tsim cov plhaub nyob ib ncig ntawm txhua tus hniav. Nws yog ib qho tseem ceeb heev uas yog tsim los tiv thaiv cov hniav ntawm kev puas tsuaj. Cov txha hniav laus yog ib daim ntaub thaiv uas tiv thaiv thaj chaw tsis zoo ntawm ib sab ntawm cov hniav uas tuaj yeem txhawb nqa kev puas tsuaj vim kev lwj.
Pom zoo:
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