Video: Cov hniav ntawm cov hniav hu li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Txhua tus hniav muaj tsib nto ntawm nws: Occlusal / incisal nto - qhov tom nto . Mesial nto – nto mus rau nruab nrab ntawm lub qhov ncauj. Distal nto – nto deb ntawm qhov nruab nrab ntawm lub qhov ncauj. Buccal / vestibular / ntsej muag nto – nto ntsib sab nrauv (sab plhu) ntawm lub qhov ncauj.
Raws li, 5 hniav nto yog dab tsi?
Nyob rau hauv tag nrho, muaj tsib qhov chaw ntawm cov hniav uas ib tug filling yuav muab tso rau: lub nyob deb , occlusal, ntuav, mesial , thiab lus /palatal nto. Tsis tas li ntawd, cov hniav tau muab faib ua ob pawg loj: anterior, thiab posterior.
Tsis tas li ntawd, qhov chaw ntawm tus hniav ntawm tus hniav nyob qhov twg? " Occlusal " hais txog cov nto hniav uas yog siv rau zom los yog sib tsoo. Mesial - pem hauv ntej los yog pem hauv ntej. Distal - tom qab ntawm sab nraum qab ntawm lub qhov ncauj. Buccal - cov hniav nto uas nyob ib sab ntawm koj ob sab plhu.
Qhov lwj uas cuam tshuam nrog ob sab ntawm tus hniav hu li cas?
Txheej txheem cej luam. Hniav lwj (kev kho hniav) yog kev puas tsuaj rau a hniav uas tuaj yeem tshwm sim thaum lwj -causing cov kab mob hauv koj lub qhov ncauj ua cov kua qaub uas tawm tsam cov hniav , los yog txha hniav laus. Qhov no tuaj yeem ua rau lub qhov me me hauv a hniav , hu ua ib kab noj hniav.
Cov hniav twg muaj Cingulum?
Feem ntau ntawm qhov chaw lingual lub ncauj tsev menyuam thib peb yog ua los ntawm cingulum . Nyob rau hauv qis incisors, a cingulum feem ntau yog tsim tsis zoo lossis tsis tuaj kawm ntawv. Maxillary miv muaj loj, zoo tsim cingulum , qhov twg cingulum ntawm mandibular canines yog du thiab sib npaug.
Pom zoo:
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