Tus neeg noj qab nyob zoo yuav tsum muaj 28 lossis 32 hniav hauv qhov ncauj. Qhov nyiaj no nyob ntawm seb cov hniav puas tau loj hlob los yog tsis tau. Tab sis lub npe yog dab tsi rau tag nrho cov hniav? Thiab tus hniav molar yog dab tsi? Tsis yog txhua tus paub cov lus teb rau cov lus nug no. Tab sis tseem, nws tsim nyog nkag siab txog cov teeb meem no thiab ntau lwm yam teeb meem kom muaj lub tswv yim txog kev noj qab haus huv ntawm koj tus kheej cov hniav thiab cov qauv ntawm qhov ncauj kab noj hniav.
cov molars yog dab tsi?
Cov hniav no muaj ntau lub npe: zom hniav, molars. Undoubtedly, qhov tom kawg yog qhov tseeb thiab feem ntau siv hauv kev kho hniav. Ib lo lus nug tshwm sim, molars - lawv yog cov hniav zoo li cas? Pom lawv hauv koj lub qhov ncauj yog qhov yooj yim heev - cov no yog cov hniav loj tshaj plaws hauv kab. Los ntawm lus Askiv, "molar" yog txhais ua "molars". Tseeb tiag, molars yog molars, txawm hais tias lawv tshwm sim thaum ntxov.
Cov hniav kawg kawg ntawm txhua kab yog cov hniav ntse. Nws tuaj yeem tawg txawm tias muaj hnub nyoog 40 xyoo, lossis nws tsis tuaj yeem tawm tag nrho. Txawm li cas los xij, qhov no yuav yog tus qauv. Tsis tas li ntawd, cov molars raug hu ua 2 cov hniav ntxiv nyob rau hauv txhua lub koov ntawm cov hniav uas ua ntejkev txawj ntse hniav. Ntawd yog, tag nrho, yuav tsum muaj li ntawm 8 mus rau 12 molars hauv qhov ncauj kab noj hniav, nyob ntawm seb cov hniav puas tau tawg. Cov menyuam yaus hnub nyoog qis dua 6 xyoos tsuas muaj 8 molars, thiab lawv yog mis nyuj. Ntawd yog, txij li 6 txog 12 xyoos, cov hniav no yuav poob tawm, thiab cov molars mus tas li yuav tshwm sim hauv lawv qhov chaw.
Kev tsim kho
Cov hniav no txawv txawm tias ib leeg. Cov qauv ntawm cov molars ntawm lub puab tsaig sab sauv thiab sab qis muaj qhov sib txawv loj. Thawj molar hniav yog qhov loj tshaj plaws. Tus so yog me dua thawj zaug, qhov ntau thiab tsawg txo los ntawm thawj mus rau peb. Cov molar ntawm kab sab sauv muaj cov hauv paus hniav muaj zog dua li cov molar qis: sab saud muaj 3 cov hauv paus hniav, thaum kab qis muaj 2 cov hauv paus hniav. Cov hniav ntawm cov molar thib ob yog me dua li ntawm thawj zaug hauv cov ntsiab lus ntawm lub hauv paus. Txawm li cas los xij, tag nrho 3 cov molars ntawm txhua qhov kho hniav muaj lub kaus mom muaj zog, raws li lawv tau npaj rau zom, sib tsoo zaub mov.
Nyob rau ntawm cov molars ntawm ob sab qaum thiab sab kab muaj tubercles: ib txwm muaj los ntawm 3 mus rau 5 ntawm txhua tus hniav. Cov cusps ntawm cov molars sab sauv yog sharper thiab prominent dua, tshwj xeeb tshaj yog cov buccal cusps. Lingual sawv daws yuav sib npaug. Thiab nyob rau hauv qis molars, qis dua thiab blunt tubercles tuaj yeem raug sau tseg. Muaj tseeb tiag, tsis zoo li cov molars sab sauv, lub lingual cusps ntawm sab qis yog tib yam ntau taw tes thiab protruding, piv rau buccal cusps.
Raws li qhov loj ntawm cov hniav, cov molars ntawm kab qis yog loj dua cov kab sab saud. Tsuas yog cov hniav txawj ntse tuaj yeem sib txawv ntawm cov duab thiab cov qauv. Cov molars no tuaj yeem muaj 2 thiab 3 cag. Thiab cov duab ntawm lub crown tuaj yeem sib txawv. Cov kev txawj ntse hniav no thiabtxawv ntawm tag nrho cov so: lawv fickle, thiab nws tsis tuaj yeem twv seb lawv yuav yog dab tsi.
Too-molars thiab premolars: lawv qhov txawv yog dab tsi
Feem ntau cov hniav no tsis meej pem los ntawm cov niam txiv uas tsis to taub yog vim li cas, thaum cov mis mos tawm, tsis molars, tab sis premolars tawm tom qab lawv? Qhov kev piav qhia rau qhov tshwm sim no yog qhov yooj yim heev: lub qhov ncauj kab noj hniav loj hlob, thiab cov molars nkag mus tom qab thawj cov molars. Cov premolars nyob tom qab cov canines thiab me dua li cov molars. Thawj premolar muaj 2 lub hauv paus, thiab qhov seem muaj 1. Muaj 8 premolars nyob rau hauv lub qhov ncauj kab noj hniav: 4 nyob rau hauv txhua lub puab tsaig.
Tsis zoo li molars, tsis muaj premolars hauv cov mis nyuj tom. Cov menyuam yaus muaj lub puab tsaig me me heev kom haum tau ntau cov hniav. Txawm hais tias premolars suav hais tias yog cov molars me tshaj plaws, nws tsis tuaj yeem hais tias lawv yog qhov me me. Lub premolar kuj yog tsim los rau kev sib tsoo thiab zom zaub mov. Nyob rau hauv cov duab, lawv zoo li fangs, tsuas yog lawv cov crown yog dav npaum li cas ntawm fangs. Muaj 2 lub tubercles ntawm lub crown ntawm premolar.
Hnub nyoog twg cov molars tshwm sim?
Kev tawg ntawm molars hauv tus me nyuam me yuav tsum nco ntsoov los ntawm txhua tus niam txiv. Tom qab tag nrho, cov hniav no tawm ntau qhov mob ntau dua li cov so, tsis suav cov fwj. Tsuas muaj 8 molars nyob rau hauv cov mis nyuj tom (2 ntawm txhua qhov hniav ntawm lub puab tsaig sab sauv thiab qis). Lawv nyob tom qab ntawm cov fwj, tab sis hla dhau ntau dua lawv.
Thawj cov molars pib tshwm sim tom qab tus menyuam mus txog ib xyoos. Zoo li tag nrhotas cov hniav, lawv tuaj ua khub. Thawj zaug, raws li txoj cai, txiav los ntawm molar nyob rau hauv lub puab tsaig sab. Tom qab nws, cov hniav molar nyob rau hauv lub puab tsaig sab sauv yuav tsum tawm. Thawj cov mis mos yuav tsum nquag tawm ua ntej tus me nyuam mus txog 18-20 lub hlis. Ntxiv mus, nyob rau tib lub sij hawm, fangs, cov hniav mob tshaj plaws, tuaj yeem pib nkag mus. Yog li ntawd, lub hnub nyoog txog li 2 xyoos yog suav tias yog lub sijhawm tawg ntawm cov hniav hnyav tshaj plaws.
Raws li cov molars thib ob, lawv tshwm sim tom qab li 2 xyoos, qee zaum me ntsis ntxov lossis tom qab. Feem ntau, cov hniav no tawg mus txog 2.5 xyoo. Tab sis tsis yog ib txwm ib qho kev sib txawv ntawm tus qauv yog pathology. Kev tawg ntawm cov molars ua ntej lossis tom qab tuaj yeem yog vim muaj caj ces los yog keeb kwm.
Thaum twg cov molars deciduous hloov los ntawm molars?
Cov menyuam mos cov hniav pib hloov los ntawm cov hniav mus tas li thaum muaj hnub nyoog 5 xyoos. Thiab nws yog cov molars uas tshwm sim thawj zaug. Tus me nyuam cov hniav hloov nyob rau hauv qhov kev txiav txim rov qab li cas lawv tshwm sim. Hauv paus molars tsis hloov cov hniav: lawv tshwm nyob rau hauv qhov chaw khoob uas tsim los ntawm kev loj hlob ntawm lub puab tsaig. Yog li cag molars yog dab tsi cov hniav nyob rau hauv kab? Cov no yog cov hniav kawg, uas nyob tam sim tom qab cov mis mos molars. Thawj cov molars qee zaum kuj hu ua cov menyuam hnub nyoog rau xyoo, vim hais tias nyob ib ncig ntawm lub hnub nyoog no lawv twb pib tshwm.
Mis molars, dhau los, poob ntawm 9 txog 12 xyoos. Hauv lawv qhov chaw, hauv paus premolars tawg. Cov hniav no tshwm sim tam sim tom qab cov mis nyuj cov hniav tau poob, uas yog,nyob ib ncig ntawm lub hnub nyoog ntawm 10 mus rau 12. Qhov nruab nrab, thaum muaj hnub nyoog 14 xyoos, tus me nyuam tsis muaj ib tus hniav mis nyuj, tab sis muaj qee qhov tshwj xeeb hauv kev kho hniav, thaum cov mis nyuj cov hniav tsis poob mus txog thaum muaj hnub nyoog 18 xyoo lossis tom qab ntawd. Yog tias cov hniav pib ntog ua ntej hnub nyoog 5 xyoos, qhov no yog ib qho laj thawj rau sab laj nrog kws kho hniav, vim tias cov hniav poob thaum ntxov tuaj yeem cuam tshuam nrog kev raug mob, malocclusion, txhob txwm xoob lossis tsis saib xyuas caries.
Kuv puas yuav tau tshem cov molars thawj zaug?
Qhov tshwm sim tom qab muaj hnub nyoog 1 xyoos, cov molar yog cov hniav mis. Tau kawg, muaj ib hnub nws yuav pib xoob thiab poob tawm. Feem ntau, cov niam txiv, thaum lawv pom tias tus me nyuam cov hniav pib xoob, thov kom loosen nws kom cov hniav ntog sai dua. Tab sis cov txheej txheem ntawm cov hniav puas tuaj yeem nrawm dua? Puas yog fraught nrog teeb meem nrog lub qhov ncauj kab noj hniav yav tom ntej? Tsis zoo li cov niam txiv xav txog nws. Tom qab tag nrho, lawv kuj tau qhia thaum yau tias cov hniav yuav tsum tau xoob thiab rub tawm.
Cov kws kho hniav hais tias nws tsis tuaj yeem txhob txwm tso cov hniav me me. Tom qab tag nrho, yog tias koj ua kom cov txheej txheem ntawm cov hniav poob, cov txheej txheem ntawm lub puab tsaig loj hlob tuaj yeem qeeb thiab cov hniav molar yuav tawm ntawm qhov tsis ncaj ncees lawm. Nws tshwm sim tias qhov teeb meem ntawm cov neeg coob coob lossis curvature ntawm cov hniav hauv cov neeg laus yog txuam nrog kev ua tsis raug thaum lub sij hawm hloov cov hniav.
Qhov no kuj siv tau rau cov molars thawj zaug. Tsis muaj teeb meem koj yuav tsum co lawv kom ceev cov txheej txheem ntawm kev poob. Lub maxillofacial apparatus ntawm tus me nyuam npaj nws tus kheej rau kev hloov ntawm cov hniav ntawm nws tus kheej thiab no ntujtxheej txheem.
Yuav ua li cas nkag siab tias cov molars yuav tawg sai sai?
Cov tsos mob ntawm cov molars tawg sai yog qhov txawv me ntsis ntawm qhov tawg ntawm cov hniav mis. Tom qab tag nrho, thaum cov mis nyuj tshwm sim, cov pos hniav swell, salivation nce, cov me nyuam ua tsis taus pa, lawv tuaj yeem pw tsis zoo, tsis kam noj. Qee lub sij hawm txawm tias qhov ntswg qhov ntswg tshwm vim txo qis kev tiv thaiv kab mob tom qab ntawm teething. Muaj tsawg zaus, cov menyuam mos txawm muaj raws plab. Tab sis thaum nws los txog rau cov molars, muaj ib qho tsos mob tseem ceeb - kev loj hlob ntawm lub puab tsaig thiab cov tsos ntawm qhov chaw dawb tom qab thawj cov molars. Nws nyob hauv qhov chaw dawb no uas cov cag molars yuav tawg.
Dhau li ntawm qhov no, qhov tsos mob tseem ceeb yog qhov pom ntawm qhov khoob ntawm cov hniav - trem. Lawv yuav tsum tau xyuas kom meej tias cov molars nyob rau hauv lub qhov ncauj kab noj hniav, tsis muaj curvature thiab neeg coob coob. Qhov tsis muaj cov trem no yog fraught, ntxiv rau unaesthetic, malocclusion. Nyob rau hauv tas li ntawd, tus me nyuam yuav tsum ncaj nws cov hniav nrog braces los yog lingual braces. Thiab ntawm chav kawm, ib qho tsos mob tseem ceeb yog lub ntuj loosening ntawm cov mis nyuj cov hniav, uas tshwm sim vim resorption ntawm cov hauv paus hniav.
Kev ua thaum hloov cov hniav: yuav ua li cas pab tus menyuam kom yooj yim hloov cov txheej txheem no
Cov niam txiv feem ntau xav tias cov txheej txheem hloov cov hniav cov hniav mus rau molars yog mob heev rau cov me nyuam. Txawm li cas los xij, qhov no tsis yog qhov xwm txheej. Yog tias cov txheej txheem no tsis cuam tshuam nrog, cov hauv paus hniav ntawm cov hniav maj mam yaj thiab cov hniav tuaj yeem poob txawm tias tsis muaj kev pab sab nraud. Los yog, thaum tus hniav zoo li dai, nws tuaj yeem tshem tau yooj yim.
Yuav kom tshuaj tua kab mob hauv qhov ncauj thaum lub sij hawm poob cov hniav, nws yog ib qho tsim nyog yuav tsum tau piav qhia rau tus menyuam tias nws yuav tsum tau yaug qhov ncauj. Kev yaug kuj tuaj yeem ua tiav nrog cov khoom tshwj xeeb, chamomile decoction lossis txawm tias dej sov.
Qee zaum nws tshwm sim tom qab tus hniav ntog, qhov chaw uas nws tau ua (qhov) los ntshav. Txhawm rau tshem tawm qhov no, koj yuav tsum tau muab cov paj rwb swab rau hauv lub qhov, lossis nws yog qhov zoo dua los thov tus menyuam kom nws nrog nws cov hniav. Nws tsis xav noj thiab haus li 2 teev tom qab cov hniav poob, yog tias lub qhov los ntshav.
Koj yuav tsum tau mus ntsib kws kho mob sai sai yog tias cov hniav tsis muaj mis nyuj nrog kub taub hau, o ntawm cov pos hniav thiab mob hnyav. Tom qab tag nrho, ib txwm hloov cov hniav tshwm sim yuav luag asymptomatically.
Tiv thaiv kom tsis txhob molars
Thaum txhua tus molars ntawm tus menyuam tau tawg, nws tseem ceeb heev uas yuav tsum tau saib xyuas lawv kom raug. Tom qab tag nrho, yog tias koj plam ib tug molar, ib tug tshiab yuav tsis tshwm nyob rau hauv nws qhov chaw. Ua li no, cov niam txiv yuav tsum qhia lawv cov menyuam kom huv lub qhov ncauj.
Ua ntej tshaj plaws, koj yuav tsum nco ntsoov tias koj yuav tsum txhuam koj cov hniav 2 zaug hauv ib hnub: thaum sawv ntxov thiab yav tsaus ntuj. Nws yog qhov zoo dua los siv cov tshuaj txhuam hniav uas muaj calcium thiab fluoride.
Thiab thaum nruab hnub, tshwj xeeb tshaj yog tom qab txhua pluas noj, nws yog qhov zoo dua tsis txhob tsis quav ntsej yaug. Koj tuaj yeem yaug koj lub qhov ncauj nrog dej sov zoo tib yam, qhov tseem ceeb yog tshem cov khoom khib nyiab ntawm koj lub qhov ncauj kom tsis txhob txhaws ntawm koj cov hniav.
Nws yog qhov zoo dua rau tus menyuam tsis txhob noj khoom qab zib ntau thiab tso dej qab zib. Noj cov zaub mov tsis zoo no tuaj yeem ua rau cov hniav lwj.
Nws yog qhov zoo dua los qhia cov khoom noj uas muaj calcium thiab vitamins rau hauv tus menyuam noj. Calcium yog qhov tseem ceeb rau cov hniav thiab cov pos hniav. Thiab kev noj qab haus huv ntawm cov pos hniav feem ntau nyob ntawm kev noj qab haus huv ntawm cov hniav.
