Video: Lub ncauj tsev menyuam ntawm tus hniav yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov cervical margin ntawm tus hniav yog qhov saum npoo ntawm qhov sib tshuam ntawm lub crown ntawm lub hniav thiab lub hauv paus ntawm hniav.
Tib neeg kuj nug, lub ncauj tsev menyuam ntawm tus hniav yog dab tsi?
Lub caj dab, tseem hu ua qhov ncauj qhov ntswg , zaum ntawm lub crown thiab hauv paus. Nws tsim cov kab uas cov cementum (uas npog lub hauv paus) raws li cov enamel.
Dab tsi yog qhov incisal ntug ntawm tus hniav? Incisal - Qhov tom ntug ntawm yav dhau los hniav . Lingual - Lub ntsej muag uas ntsej muag tus nplaig.
Ib yam li ntawd, nws raug nug, Cavosurface margin yog dab tsi?
Cov cavo nto lub kaum sab xis yog lub kaum sab xis ntawm cov hniav tsim los ntawm kev sib tshuam ntawm ib phab ntsa npaj (txiav) thiab sab nraud ntawm cov hniav. Qhov tseeb junction yog hu ua cavosurface npoo.
Qhov ntev ntawm tus hniav yog dab tsi?
Cov ntev ntawm tus hniav yog txoj kab kev xav uas dhau los ntawm cov yas thiab hauv paus ib puag ncig uas cov khoom ntawm a hniav yog feem ntau symmetrically faib. Txhua qhov chaw ntawm a hniav uas yog parallel rau ntev axis yog hu ua axial nto (piv txwv li, mesial, distal, ntsej muag, lossis lingual nto).
Pom zoo:
Dab tsi yog lub npe ntawm daim ntawv xeem ncauj tsev menyuam thib ob?
Qhov thib ob ncauj tsev menyuam vertebra (C2). Nws muaj cov phiaj xwm pob txha hu ua dens ib puag ncig uas lub atlas tig tso cai rau 'tsis muaj' txav ntawm pob txha taub hau. Txhua lub ncauj tsev menyuam vertebrae muaj qhov qhib hauv ob qho kev hloov pauv txawm hais tias cov hlab ntsha nqaj qaum muab ntshav rau lub hlwb dhau
Cov hlab ntsha twg yog lub luag haujlwm muab ntshav rau lub ncauj tsev menyuam ntawm tus txha caj qaum?
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Dab tsi yog qhov tseem ceeb ntawm lub ncauj tsev menyuam vertebrae?
Lub ntsiab anatomical yam ntxwv ntawm ib tug raug ncauj tsev menyuam vertebra uas cais nws los ntawm lwm yam vertebrae yog qhov me me, transverse foramina, eeb-shaped lub cev, thiab bifid spinous txheej txheem (Fig
Dab tsi yog segmental dysfunction ntawm lub ncauj tsev menyuam cheeb tsam?
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Kev rho menyuam tawm ntawm ncauj tsev menyuam yog dab tsi?
Kev rub caj dab: Nqa koj lub puab tsaig me ntsis thiab maj mam tig koj lub taub hau mus rau tom qab ntawm koj lub nraub qaum kom nws nyob saum koj lub ncauj tsev menyuam nqaj qaum. Nws yuav hnov zoo li koj tab tom thawb koj lub taub hau rau hauv lub taub hau xav. Lwm yam paub tias ua "ob lub puab tsaig"