Txhua yam tshuaj txhuam hniav raws li peb paub niaj hnub no tsis tau tsim txog 1938 Txawm li cas los xij, cov ntawv txhuam hniav thaum ntxov tau tshwm sim txij li 3000 BC. Ancient civilizations siv ib tug "chew stick," uas yog ib tug nyias twig nrog ib tug frayed kawg. Cov 'chew sticks' no tau rub tawm ntawm cov hniav.
Lawv txhuam hniav li cas thaum xyoo 1800?
Victorian Oral Hygiene & Dental Decay
Cov neeg feem coob ntxuav lawv cov hniav siv dej nrog cov twigs lossis cov ntaub ntawv ntxhib ua cov txhuam hniav Qee cov splurged ntawm "cov hmoov txhuam hniav" yog tias lawv muaj peev xwm them taus. Qab zib tau nthuav dav ntau, yog li ua rau muaj cov hniav lwj ntxiv rau lub sijhawm no.
Thaum twg tib neeg pib txhuam hniav?
Thawj txhuam hniav zoo li tsim ib ncig 3000 BCE. Qhov no yog ib tug frayed twig tsim los ntawm cov Babylonians thiab cov Egyptians. Lwm qhov chaw tau pom tias nyob ib ncig ntawm 1600 BCE, Suav tau tsim cov ntoo los ntawm cov ntoo uas muaj ntxhiab tsw qab los pab ua pa tsw qab.
Thaum twg yog tshuaj txhuam hniav tsim?
Thaum twg yog tshuaj txhuam hniav niaj hnub tsim? Hauv 1824, tus kws kho hniav npe hu ua Peabody yog thawj tus neeg ntxiv xab npum rau tshuaj txhuam hniav, tom qab ntawd los ntawm John Harris hauv xyoo 1850 uas tau ntxiv chalk ua cov khoom xyaw. Colgate pawg-tsim thawj cov tshuaj txhuam hniav hauv ib lub thawv. Dr.
Tus txhuam hniav thawj zaug hauv ntiaj teb yog dab tsi?
Babylonian chew sticks los ntawm 3500 BC yog tej zaum cov khoom qub qub tshaj plaws ntawm qhov ncauj ntawm cov ntaub ntawv. Thawj txhuam hniav txhuam hniav yog tsim los ntawm Suav thaum lub sij hawm Tang Dynasty (619-907) thiab feem ntau yog ua los ntawm cov plaub hau ntxhib ntawm cov khaub thuas-kub hog.
