2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yaj tus incisor yog a hypsodont tooth, i.e. nws muaj lub kaus ntev uas txuas ntxiv mus (tawm) ntawm cov pos hniav tom qab txiav, teb rau kev loj hlob lossis hnub nyoog, thiab hnav.
Dab tsi tsiaj muaj hniav hypsodont?
Cov hniav ntawm nyuj thiab neesyog hypsodont. Cov kev mob sib txawv, cov hniav qis, yog hu ua brachydont. Tib neeg cov hniav yog brachydont. Hauv qee hom, hypsodont cov hniav txuas ntxiv mus thoob plaws tsiaj lub neej (piv txwv li, ntau hom nas subfamily Arvicolinae, tsev neeg Muridae).
Puas ruminants muaj hypsodont hniav?
Ruminants muaj hom hniav tshwj xeeb txawv los ntawm qhov siab dua (hypsodont)thiab txoj kab nkhaus nkhaus ntawm enamel (selenodont). Hypsodont cov hniav siv tau ntev heev vim lawv txhim kho qhov tob dua kom hnav.
yaj muaj hniav dab tsi?
Cov yaj ntawm cov hniav tau muab faib ua ob ntu, uas yog, yim qhov chaw ruaj khov nyob rau hauv lub puab tsaig sab hauv qabthiab nees nkaum plaub molars, tom kawg tau muab faib ua rau ntawm txhua sab ntawm lub puab tsaig sab sauv thiab sab qis. Yaj tsis muaj hniav nyob rau hauv pem hauv ntej ntawm lub puab tsaig sab sauv uas muaj ib tug tuab, tawv, fibrous pad.
Puas yog canines hypsodont?
… yog tias feem ntau ntawm cov tsiaj nyeg tsis ntev los no khaws cov poj koob yawm txwv brachydonty (Daim duab 1A), ob qho tib si marsu- pial thiab placental mammals tau tsim hypsodont cov hniav, hauv txhua hom hniav-incisors, canines, premolars, thiab molars (Daim duab 1A,2).
Pom zoo:
Puas yog cov hniav hniav puas suav tias yog orthodontic?
Tsis yog, dentures raug suav tias yog kho hniav kho hniav vim tias cov hniav tuaj yeem pab kho koj cov hniav. Kev kho hniav kho hniav kuj suav nrog kev cog hniav, onlays, inlays, txuas hniav, thiab crowns. Tus kws kho hniav tuaj yeem kuaj xyuas thiab tiv thaiv lossis kho malocclusions.
Puas siv cov tshuaj txhuam hniav puas zoo rau koj cov hniav?
Flossing pab txhawb kev tu hniav zoo vim nws nqa thiab tshem cov quav hniav thiab zaub mov hauv nruab nrab ntawm koj cov hniav. Kev txhuam hniav kuj tshem tawm cov quav hniav thiab cov khoom noj khoom haus, tab sis cov txhuam hniav ntawm cov txhuam hniav tsis tuaj yeem ncav cuag tob hauv nruab nrab ntawm cov hniav kom tshem tawm tag nrho.
Yaj tsuas muaj cov hniav hauv qab xwb?
Vim li cas cov yaj tsuas muaj cov hniav nyob rau hauv qab lub puab tsaig? Teb: Lawv ua, tab sis tsis nyob rau pem hauv ntej. Lawv muaj ib lub phaj nyob rau pem hauv ntej ntawm lawv lub qhov ncauj uas ua zoo li serrated txiab los pab lawv lob nyom, thaum tom qab lawv muaj tsib mus rau rau kab ntawm cov hniav los pab lawv zom lawv cov zaub mov.
Hom twg muaj cov hniav hypsodont?
Cov hniav ntawm nyuj thiab nees yog hypsodont. Cov kev mob sib txawv, cov hniav qis, yog hu ua brachydont. Tib neeg cov hniav yog brachydont. Hauv qee hom, hypsodont cov hniav txuas ntxiv mus thoob plaws tsiaj lub neej (piv txwv li, ntau hom nas subfamily Arvicolinae, tsev neeg Muridae Muridae Muridae, lossis murids, yog tsev neeg loj tshaj plaws ntawm nas thiab Ntawm cov tsiaj nyeg, muaj kwv yees li 1383 hom nrog rau ntau hom nas, nas thiab gerbils pom nyob thoob plaws hauv
Puas cov uas tsis yog cov yaj yaj hauv qhov cub?
Quins yog qhov lom zem heev uas tuaj yeem ua ntau yam duab, qhov ntau thiab tsawg, thiab xim. Lawv kuj hu ua Sequins lossis Qab Zib Shapes thiab siv los kho cov khoom ci. Lawv tsis ua hauj lwm zoo heev rau ci nrog, raws li lawv yuav yaj thiab plam lawvcov duab lom zem.
