Premolars, tseem hu ua bicuspids, yog cov hniav nyob ruaj khov nyob nruab nrab ntawm koj cov molars hauv qab ntawm koj lub qhov ncauj thiab koj cov hniav tsiaj(cuspids) nyob rau pem hauv ntej.
Koj cov hniav twg yog bicuspids?
Bicuspids tseem hu ua premolar teeth vim tias lawv nyob nruab nrab ntawm peb cov canines thiab peb cov molars hauv qab ntawm peb lub qhov ncauj. Bicuspid yog lub npe nrov tshaj. Bicuspid los yog premolar hniav feem ntau tuaj nyob nruab nrab ntawm cov hnub nyoog 12 thiab 13. Lawv yog ib feem ntawm koj cov neeg laus cov hniav.
Tus lej twg yog bicuspids?
Qab cov canines dag cov bicuspids (los yog premolars). Cov bicuspids yog 4, 5, 12, 13 (lub puab tsaig sab sauv) thiab20, 21, 28, 29 (lub puab tsaig qis). Bicuspids yog ib hom "nyob rau hauv-nruab nrab cov hniav," nrog rau cov khoom ntawm ob lub canine thiab molar hniav. Cov hniav no hloov cov zaub mov ntawm canines mus rau molars kom zoo sib tsoo.
molars thiab bicuspids yog dab tsi?
Premolars (bicuspids) thiab molars muaj ntau qhov kev nce siab (cov ntsiab lus lossis 'cusps') uas yog siv los rhuav tshem cov khoom noj. Txhua premolar feem ntau muaj ob lub cusps, yog li lub npe bicuspid. Lawv yog siv los tuav thiab crushing zaub mov. Molars yog cov hniav tiaj tus tom qab ntawm lub qhov ncauj.
bicuspids siv rau dab tsi?
Premolars Premolars, los yog bicuspids, yog siv rau zom thiab zom zaub mov. Cov neeg laus muaj plaub premolars ntawm txhua sab ntawm lawv lub qhov ncauj - ob lub rau sab sauv thiab ob sab ntawm lub puab tsaig.
