Lub mandibular thawj molar mandibular thawj molar Anatomical terminology. Lub mandibular thawj molar los yog rau xyoo molar yog cov hniav nyob distally (nyob deb ntawm nruab nrab ntawm lub ntsej muag) los ntawm ob qho tib si mandibular thib ob premolars ntawm lub qhov ncauj tab sis mesial (mus rau nruab nrab ntawm lub ntsej muag) los ntawm ob qho tib si mandibular ob molars. https://en.wikipedia.org › wiki › Mandibular_first_molar
Mandibular thawj molar - Wikipedia
muaj qhov loj tshaj mesiodistal qhov ntev ntawm txhua tus hniav. E, F Nws feem ntau muaj tsib cusps: peb buccal thiab ob lingual (Fig. 5-3), tab sis qhov me-est distal cusp tej zaum yuav tsis tuaj txog ib feem tsib ntawm lub sij hawm (Fig.
Yuav ua li cas cov molars hauv qab no feem ntau muaj 5 cusps?
Feem ntau muaj tsib lub cusps uas tsim tau zoo ntawm mandibular thawj molars: ob ntawm lub plab (sab ze ntawm lub plhu), ob lub lingual (sab ze tus nplaig), thiab ib qho distal. Cov duab ntawm txoj kev loj hlob thiab ntxiv grooves, ntawm qhov chaw occlusal, yog piav qhia tias yog 'M' zoo li tus.
Pob molars muaj tsib cusps?
Molars ib txwm muaj plaub lossis tsib cusps. Hauv qee cov neeg, cov maxillary molars, tshwj xeeb tshaj yog thawj cov molars, yuav muaj qhov thib tsib cusp nyob rau ntawm mesiolingual cusp hu ua Cusp of Carabelli.
cov molars puas muaj 5 ntsiab lus?
Thaum maxillary (sab sauv) cov molars feem ntau muaj plaub cusps nyob rau sab saum toj los pab zom, qee tus neeg muaj tsib cusp ntawm sabntawm thawj tus. Qhov ntxiv cusp no hu ua cusp ntawm Carabelli.
Puas muaj pes tsawg tus molar?
Molars yog cov hniav tiaj tus tom qab ntawm lub qhov ncauj. Txhua tus molar feem ntau muaj plaub lossis tsib cusps. Lawv tsuas yog siv rau crushing thiab sib tsoo.
