Video: Cov hniav ua li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tib neeg cov hniav yog ua txog plaub hom ntaub so ntswg sib txawv: pulp, dentin, txha hniav laus, thiab cementum. Ib txheej ntawm cementum npog sab nraud ntawm cov hauv paus hniav, hauv qab cov kab ntawm cov pos hniav, thiab tuav cov hniav nyob hauv qhov chaw hauv pob txha. Cementum kuj nyuaj li pob txha.
Tom qab ntawd, ib tus tseem tuaj yeem nug, cov hniav ua los ntawm pob txha?
Cov hniav muaj feem ntau ntawm cov tawv, inorganic minerals xws li calcium. Lawv kuj muaj cov hlab ntsha, cov hlab ntsha thiab cov hlwb tshwj xeeb. Tab sis lawv tsis yog pob txha . Cov hniav tsis muaj regenerative powers uas pob txha ua thiab tsis tuaj yeem loj hlob rov qab ua ke yog tawg.
Ib qho ntxiv, koj puas tau yug los nrog ob txheej hniav? Tib neeg, zoo li lwm hom tsiaj, yog diphyodont, txhais tau tias lawv loj hlob ob txheej hniav . Thawj teeb (hu ua "menyuam", "mis", "thawj", lossis "txiav txim siab" teeb ) feem ntau pib tshwm sim thaum muaj hnub nyoog txog rau lub hlis, txawm tias qee tus menyuam mos yug nrog ib lossis ntau qhov pom cov hniav , lub npe hu ua natal cov hniav.
Raws li, cov hniav tsim li cas?
Cov kho hniav papilla muaj cov cell uas tsim los rau hauv odontoblasts, uas yog dentin- sib sau hlwb. Tsis tas li ntawd, kev sib tshuam ntawm cov kho hniav papilla thiab sab hauv txha hniav laus epithelium txiav txim siab cov duab puab ntawm a hniav . Mesenchymal hlwb nyob rau hauv lub cev kho hniav papilla yog lub luag haujlwm rau tsim ntawm hniav pulp.
Tus hniav yog dab tsi?
A hniav (ntau tshaj cov hniav ) yog ib qho nyuaj, cov qauv tsim muaj nyob hauv lub puab tsaig (lossis lub qhov ncauj) ntawm ntau lub vertebrates thiab siv los zom zaub mov. Cov hauv paus hniav ntawm cov hniav yog npog los ntawm cov pos hniav. Cov hniav tsis yog ua los ntawm cov pob txha, tab sis ntau cov ntaub so ntswg sib txawv ntawm qhov ntom ntom thiab hardness.
Pom zoo:
Koj puas tuaj yeem tau cov hniav nyiaj hniav kub yog tias koj muaj cov hniav nkhaus?
Koj tuaj yeem tau txais cov hniav nyiaj hniav kub txawm tias koj tsis muaj cov hniav ncaj ncaj. Cov pwm uas peb tau txais los ntawm peb cov neeg siv khoom tso cai rau peb ua cov hniav nyiaj hniav kub kom haum rau lawv cov hniav thiab tsis muaj teeb meem tiag tiag txawm hais tias cov hniav puas nkhaus lossis tawg. Peb tseem tuaj yeem ua cov hniav nyiaj hniav kub ncaj kom koj cov hniav saib ncaj
Cov hniav ntawm cov hniav hu li cas?
Txhua tus hniav muaj tsib qhov chaw ntawm nws: Occlusal / incisal nto - qhov chaw tom. Mesial nto - nto rau nruab nrab ntawm lub qhov ncauj. Distal nto - nto nyob deb ntawm nruab nrab ntawm lub qhov ncauj. Buccal / vestibular / lub ntsej muag nto - nto sab nraud (pob ntseg) ntawm lub qhov ncauj
Tus kws kho hniav muab dab tsi rau menyuam cov hniav kom tiv thaiv kab noj hniav?
Sealants yog ib txheej nyias pleev xim rau ntawm cov hniav ntawm cov hniav - feem ntau cov hniav tom qab (cov premolars thiab molars) - los tiv thaiv cov hniav lwj. Thepainted rau cov kua sealant sai sai rau hauv cov kev nyuaj siab thiab grooves ntawm cov hniav, tsim ib tug tiv thaiv thaiv tshaj theenamel ntawm txhua tus hniav
Thaum twg kuv tuaj yeem muab kuv cov hniav ntxuav hniav dawb tom qab rho hniav?
Tus kws kho hniav yuav muab cov hniav cuav rau koj ib ntus thaum cov pos hniav zoo. Thaum cov ntaub so ntswg zoo lawm, lub sijhawm zoo los ntxiv cov hniav cuav rau koj lub qhov ncauj. Feem ntau, nws feem ntau yuav siv li ntawm rau thiab yim lub lis piam tom qab muab cov hniav rho tawm rau cov hniav hniav kom muab tso rau. Txawm li cas los xij, txhua tus neeg mob tshwj xeeb
Nws siv sijhawm ntev npaum li cas rau kev kuaj hniav kom hniav hniav?
Feem ntau nws yuav siv sijhawm tsawg kawg 4 zaug los kho hniav, thiab li ntawm 3-6 lub lis piam. Qee zaum, cov hniav hniav tuaj yeem taug qab sai thiab ua rau ob peb hnub