ob leeg fang, tseem hu ua ob tug hniav los yog persistence ntawm cov mis nyuj cov hniav, muaj ib tug hloov nyob rau hauv cov txheej txheem hloov cov hniav ntawm cov dev. Feem ntau, cov hniav cov hniav yog hloov los ntawm cov hniav mus tas li nyob rau hauv ib tug txheej txheem uas spans ntawm 3 mus rau 7 lub hlis ntawm lub neej. Txawm li cas los xij, qee zaum cov mis nyuj cov hniav tsis poob tawm thiab kev sib koom ua ke ntawm ob hom hniav tshwm sim hauv lub qhov ncauj ntawm cov dev.
Yog koj xav kawm ntxiv txog ob tug fangs nyob rau hauv dev, peb xav kom koj koom nrog peb nyob rau hauv tsab xov xwm tom ntej no nyob rau hauv peb lub site, nyob rau hauv uas peb yuav tham txog qhov ua tau ua rau ob tug fang hauv dev thiab ua dab tsi.
dab ntxwg nyoog yog dab tsi?
Ib yam li tib neeg, dev yog tsiaj txhu uas muaj ob lub dentitions thoob plaws hauv lawv lub neej:
ZAJ NUG Tam Sim No, Puas yog,, tseem hu ua "Menyuam Cov Hniav", uas yog tsim ntawm 28 tus hniav. Thaum twg cov dev hloov lawv cov hniav? Peb mam li qhia koj cov lus teb hauv tsab xov xwm tom ntej ntawm peb lub xaib.
Cov txheej txheem ntawm kev hloov cov hniav nyiaj hniav kub thawj zaug nrog rau qhov chaw ruaj khov pib nyob ib ncig ntawm lub hlis thib peb ntawm lub neej thiab xaus rau lub hli thib rau thiab xya ntawm tus tsiaj lub neej. Thaum twg, tom qab lub sij hawm no, tus me nyuam cov hniav tsis poob tawm thiab cov hniav mus tas li, kev sib koom ua ke ntawm ob qho tib si hniav hniav hauv tus tsiaj lub qhov ncauj tshwm sim, txheej txheem uas yog paub tias yog ob chav dentition lossis persistence ntawm cov hniav deciduous
. Tom qab cov canines, cov hniav uas cuam tshuam tshaj plaws yog incisors thiab premolars.
Txawm hais tias kev kho hniav ob zaug tuaj yeem tshwm sim hauv ib hom tsiaj, nws yog ib qho tshwj xeeb tshaj yog mob hauv cov khoom ua si me thiab cov khoom ua si yug me nyuam, xws li Yorkshires, Pomeranian thiab Bichons.
Nws yuav tsum tau muab sau tseg tias qhov persistence ntawm deciduous dentition yuav tsum tau sib txawv ntawm polyodontia Hauv polyodontia ntau cov hniav kuj tau pom nyob rau hauv. lub qhov ncauj ntawm dev, tab sis nyob rau hauv cov ntaub ntawv no nws tsis yog vim lub persistence ntawm cov mis nyuj cov hniav, tab sis mus rau lub fact tias muaj ib tug ntau dua ntawm cov hniav mus tas li.
Thov caw ib tsoom phooj ywg sawv daws los koom kev lom zem nrog rau ntawm peb lub xaib hais txog Kuv tus aub tsis poob nws cov hniav: ua rau thiab yuav ua li cas.
Ua rau ob tug hniav hauv dev
Cov laj thawj uas tuaj yeem ua rau pom cov hniav ob leeg hauv dev yog:
- Growing the permanent tooth in the wrong direction: When the permanent tooth does not grow in the right direction, it does not put enough pressure ntawm cov hauv paus hniav ntawm cov mis nyuj, uas tiv thaiv nws los ntawm ntog tawm. Thaum twg dev tau hniav? Nrhiav cov lus teb hauv qab no.
- Migration of the permanent tooth germ: cov kab mob hniav yog cov txheej txheem ntawm cov hlwb uas tsim thaum lub sij hawm embryonic kom nce mus rau lub yav tom ntej tus hniav mus tas li. Thaum cov kab mob no tsiv mus rau qhov chaw txawv txav, nws yuav tsis thawb cov hauv paus hniav ntawm cov mis nyuj, uas yuav tiv thaiv kom tsis txhob poob.
- Dental agenesis: muaj qhov tsis muaj ib los yog ob peb cov hniav vim tsis tsim cov kab mob hniav thaum lub sij hawm embryonic. Vim tsis muaj cov hniav tas mus li, nws tsis nias rau ntawm cov hniav ntawm cov hniav thiab nws cov resorption tsis tshwm sim.
Diagnosis of two fangs in dogs
Kev kuaj mob ntawm ob lub hniav yog qhov yooj yim thiab ua raws cov ntsiab lus hauv qab no:
ZAUBNum rau ntawm qhov ncauj1 ZAUM ME NYUAM MAS THIAB PUAS PAUB NTXIV YUAV TAU. Tsis tas yuav tsum muaj qhov sib npaug ntawm txhua cov hniav, tab sis tsuas yog qee cov hniav tuaj yeem cuam tshuam. Raws li peb tau hais, feem ntau yog cov flanges cuam tshuam.
Tshuaj rau ob tug hniav hauv dev
Lub hav zoov ntawm ob tug hniav nyob rau hauv dev predisposes rau cov tsos ntawm ntau yam pathologies thiab qhov ncauj mob. Qee qhov tseem ceeb tshaj plaws yog:
- Periodontal Disease.
- Nkauj kho siab heev.
- Gingival, palatal and/or dental trauma.
- Dental fractures.
Vim li no, nws yog ib qho tseem ceeb rau nquag mus xyuas lub qhov ncauj ntawm cov dev thaum lub sij hawm hloov kho hniav thiab, yog tias kuaj pom qhov persistence ntawm tus me nyuam cov hniav, mus rau vet. Thaum pib, nws yuav tsum tau tos kom txog thaum kawg ntawm lub sijhawm hloov ntawm ib qho kev kho hniav rau lwm tus, vim tias qee zaum pom tias cov hniav tsis tu ncua tuaj yeem poob tawm ntawm lawv tus kheej. Txawm li cas los xij, yog tias tom qab lub sijhawm tsim nyog, tus menyuam cov hniav tseem tsis tau poob, nws yog ib qho tseem ceeb rho tawm hauv qab tshuaj loog
In many cases, surgeries to extract persistent teeth are complicated, because it is common for the cov hauv paus hniav ntawm cov hniav kom tawg. Yog li ntawd, nws yog ib qho tseem ceeb uas cov extractionua los ntawm ib tug kws kho tsiaj tshwj xeeb hauv canine dentistry
Tsev cov hniav tawv tawv yuav tsum tau ua kom sai li sai tau, txij li lub sijhawm dhau mus, cov hniav yuav raug puas tsuaj tsawg dua. nyob rau hauv txoj hauj lwm kom zoo, ua kom kho orthodontic tsim nyog. Tsis tas li ntawd, ncua kev rho tawm mus ntxiv ua rau cov txiaj ntsig tsis zoo ntawm cov hniav tsis tu ncua.
