Thaum cov no poob tawm, lawv hloov los ntawm permanent premolars. Raws li deb li thaum premolars loj hlob nyob rau hauv, lawv muaj feem yuav tshwm sim ntawm cov hnub nyoog ntawm 10-12, nrog thawj premolars tshwm sim los ntawm cov hnub nyoog ntawm 10-11, thiab lub thib ob premolars tshwm sim los ntawm cov hnub nyoog ntawm 10-12., raws li The Cleveland Clinic.
Yuav ua li cas yog tias koj plam koj cov premolars?
Thaum tus kab mob premolar ploj mus rau qhov tsis kho kab noj hniav lossis mob hniav hnyav, nws tuaj yeem cuam tshuam koj qhov ncauj tag nrho. Nws kuj tseem tuaj yeem cuam tshuam qhov meej ntawm koj cov lus thiab hloov qhov tsos ntawm koj luag ntxhi.
Ntev npaum li cas premolars kav ntev?
Central incisors - nruab nrab ntawm 6 thiab 8 xyoo. Lateral incisors - nruab nrab ntawm 7 thiab 8 xyoo. Canine hniav - nruab nrab ntawm 9 thiab 13 xyoo. Premolars – nruab nrab ntawm 9 thiab 13 xyoo.
Puas 4 ntxov dhau los plam hniav?
Tshuaj thiab sij hawm ntawm tus menyuam mos cov hniav
Cov hniav no pib xoob thiab poob tawm ntawm lawv tus kheej kom muaj chaw rau cov hniav mus tas li thaum muaj hnub nyoog 6 xyoos. Qee cov menyuam yaus pib plam lawv cov hniav thaum ntxov li 4 los yog lig li 7, tab sis nyob rau hauv dav dav thaum ntxov lawv tuaj ntxov lawv yuav pib poob.
Koj cov hniav puas tuaj yeem rov qab thaum muaj hnub nyoog 15?
Tsis yog, koj tus menyuam cov hniav laus yuav tsis rov qab- peb tsuas muaj ib txheej xwb!
