![Cov hniav tus lej twg yog premolars? Cov hniav tus lej twg yog premolars?](https://i.answers-medical.com/preview/medical-health/14091870-which-teeth-numbers-are-premolars-j.webp)
Video: Cov hniav tus lej twg yog premolars?
![Video: Cov hniav tus lej twg yog premolars? Video: Cov hniav tus lej twg yog premolars?](https://i.ytimg.com/vi/aFpp7v6MM-U/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Incisors (8 tag nrho): Qhov nruab nrab plaub cov hniav ntawm lub puab tsaig sab saud thiab qis. Canines (4 tag nrho): Taw qhia cov hniav tsuas yog sab nraum lub incisors. Premolars (8 tag nrho): Cov hniav nruab nrab ntawm cov canines thiab molars.
Tsuas yog li ntawd, cov hniav yuav suav li cas?
Thawj qhov uas yuav tsum paub yog cov kws kho hniav siv ob tus lej tus lej qhov system. Yog li ntawd sab xis cov hniav pib nrog tus lej “1” (piv txwv li 11), sab saud sab saud cov hniav pib nrog tus lej "2" (piv txwv li 21), sab laug sab laug cov hniav pib nrog tus lej “3” (piv txwv li 31), thiab sab xis cov hniav pib nrog tus lej “4” (piv txwv li 41).
hom hniav twg uas yuav hloov pauv ua ntej? Ua ntej cov hauv paus hniav tsim, cov hniav tsim tau hu ua "cov hniav pob." Thaum kawg, 20 thawj cov hniav tau hloov los ntawm 32 cov hniav mus tas li . Qhov tseem ceeb molars tau hloov los ntawm cov premolars mus tas li (tseem hu ua bicuspids ) thiab qhov ruaj khov molars tuaj hauv qab lub thawj cov hniav.
Yog li ntawd, qhov txawv ntawm molars thiab premolars yog dab tsi?
Premolars thiab molars ua lub luag haujlwm tseem ceeb hauv txheej txheem ntawm kev sib tsoo thiab zom. Hauv tsab ntawv no, peb yuav tham txog qee yam qhov sib txawv ntawm cov molars thiab premolars : Qhov qis molars feem ntau muaj 2 cag thaum lub sab sauv molars muaj 3 cag. Lawv muaj lub tiaj tiaj thiab muaj 4 lub cusps los pab zom zom zaub mov yooj yim.
Tus hniav twg yog tus lej 31?
Zauv 17 yog hniav nrug deb ntawm sab laug ntawm koj lub qhov ncauj hauv qab. Numbering txuas ntxiv mus rau pem hauv ntej thiab hla mus rau hniav nyob deb tshaj plaws ntawm sab xis hauv qab ntawm koj lub qhov ncauj tus lej 32.
Pom zoo:
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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
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Koj cov hniav canine yog 13 thiab 23. Koj tus lej premolars raug suav ua 14, 15, 24, 25 thiab koj cov hniav puas yog 16-18 thiab 26-28. Tib yam muaj tseeb nyob hauv qab. Kev suav suav pib nyob rau sab laug sab laug, qhov twg qhov incisors yog 31, 32, 41 thiab 42
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Daim npav Term Piav qhia lub luag haujlwm ntawm Hippocrates hauv keeb kwm. Lub ntsiab lus Leej Txiv ntawm Tshuaj, thiab tsim Hippocratic Oath Term Lub Npe Thawj kws kho hniav los ntiav tus kws pab kho hniav. Lus Txhais C. Edmund Kells Lub Sij Hawm Lub Npe Thawj Tus Poj Niam Kev Kho Hniav. Txhais lus Maluina Cueria
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