Leej twg yog tus thawj tus txhuam hniav?

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Leej twg yog tus thawj tus txhuam hniav?
Leej twg yog tus thawj tus txhuam hniav?

Video: Leej twg yog tus thawj tus txhuam hniav?

Video: Leej twg yog tus thawj tus txhuam hniav?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Hlis ntuj nqeg
Anonim

Nyob ntev li 3000 B. C., cov neeg Iyiv thaum ub tsim cov txhuam hniav los ntawm cov nplooj thiab nplooj los ntxuav lawv cov hniav.

Leej twg invented txhuam hniav?

William Addis ntawm England tsim thawj tus txhuam hniav tsim tawm ntau. Thaum nyob hauv tsev loj cuj, nws tho qhov me me hauv cov pob txha nyuj, khi swine fibers (los ntawm cov npua qus) rau hauv ib pawg, hla lawv hla lub qhov thiab tom qab ntawd khi lawv.

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.

Cavemen puas yuav tsum txhuam hniav?

Cavemen zom rau ntawm cov hniav los ntxuav lawv cov hniavthiab txawm siv nyom stalks los khaws ntawm lawv cov hniav. Yog tias tsis muaj cov txhuam hniav zoo nkauj thiab tshuaj txhuam hniav, txawm li cas los xij, cavemen cov hniav tuaj yeem ua rau cov kab noj hniav thiab lwj, txawm tias noj zaub mov tsis muaj carbohydrate.

Yuav ua li cas yog tias koj tsis txhuam koj cov hniav?

Yog koj tsis txhuam koj cov hniav koj tau txais plaque uas ua rau koj cov hniav enamel Qhov no yuav ua rau ua pa tsis zoo thiab thaum kawg tuaj yeem ua rau muaj teeb meem loj thiab xav tau tej yam xws li cov kaus mom thiab cov hauv paus hniav. cov kwj dej. Cov kab mob ntawm cov pos hniav. Kuj hu ua kab mob periodontal, qhov no tshwm sim thaum cov kab mob hauv cov quav hniav ua rau cov pos hniav o thiab los ntshav.

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