2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub maxillary thib ob premolar yog ib ntawm ob cov hniav nyob nyob rau hauv lub puab tsaig sab sauv, tom qab (tawm ntawm nruab nrab ntawm lub ntsej muag) los ntawm ob lub maxillary thawj premolars ntawm lub qhov ncauj tab sis mesial (mus rau midline ntawm lub ntsej muag) los ntawm ob qho tib si maxillary thawj molars.
Tus lej twg yog tus thib ob premolar?
Number 13: 2nd Bicuspid lossis 2nd premolar. Number 14: 1st Molar.
Koj puas muaj 2 lub premolars?
Cov premolars, tseem hu ua cov hniav premolar, lossis bicuspids, yog cov hniav hloov pauv nyob nruab nrab ntawm cov hniav thiab cov hniav. Hauv tib neeg, muaj ob premolars ib quadrant nyob rau hauv cov txheej txheem tas mus li, ua rau yim premolars tag nrho hauv lub qhov ncauj. Lawv muaj tsawg kawg yog ob cusps.
Puas muaj pes tsawg kwj dej ua 2nd premolars?
Maxillary thib ob premolar feem ntau suav hais tias muaj ib cag thiab ib tus kwj dej [2, 3, 6, 14].
Dab tsi yog qhov ua haujlwm ntawm ob premolars?
Qhov kev ua haujlwm ntawm qhov premolar no yog pab tus mandibular thawj molar thaum lub sijhawm mastication, feem ntau hu ua zom. Mandibular thib ob premolars muaj peb cusps. Muaj ib lub cusp loj nyob rau sab buccal (ze rau sab plhu) ntawm tus hniav.
Pom zoo:
Qhov thib kaum nyob qhov twg?
Tus lej hauv kaum yog 5 raws li nws yog thawj tus lej mus rau sab xis ntawm tus lej lej. tus lej thib kaum nyob qhov twg? thawj tus lej tom qab tus lejsawv cev rau qhov thib kaum. Tus lej tom ntej tom qab tus lej suav sawv cev rau qhov chaw pua pua.
Koj cov premolars nyob qhov twg?
Premolars, tseem hu ua bicuspids, yog cov hniav mus tas li nyob nruab nrab ntawm cov molars hauv qab ntawm koj lub qhov ncauj thiab koj cov hniav tsiaj, lossis cuspids, nyob rau pem hauv ntej. Vim tias premolars yog cov hniav hloov pauv, lawv pom cov yam ntxwv ntawm cov molars thiab canines thiab feem ntau zom thiab zom zaub mov.
Kuv qhov kev ntsuas thib peb nyob qhov twg?
Yog koj tseem tsis tau txais kev them nyiaj, tsis tau txhais hais tias koj yuav tsis tau. Kev them nyiaj yog xa los ntawm kev tso nyiaj ncaj qha lossis xa ntawv raws li daim tshev lossis daim debit. Peb tab tom xa IRS Daim Ntawv Ceeb Toom 1444-C rau cov neeg uas tau txais kev them nyiaj cuam tshuam thib peb.
Peb puas hais thib ob lossis thib ob?
Thiab "thib ob" yog ib daim ntawv adverbial uas tsis muaj kev nkag siab txhua yam hauv kev suav (tsis yog "thawj"). Thaum koj mus dhau koj daim ntawv teev npe, hais tsuas yog "thib ob, "" thib peb, ""
Kuv yuav tsum siv thib ob lossis thib ob?
"Ua ntej ntawm tag nrho" ua rau kev txiav txim siab thaum koj xav hais txog qhov tseem ceeb ntawm thawj yam khoom hauv koob, tab sis nws yuav tsum tsis txhob ua raws li "thib ob ntawm tag nrho," qhov twg cov lus qhia tsis ua haujlwm li ntawd.
