Tshuaj txhuam hniav zoo li cas?
Cov no yog cov me me uas ntxuav cov hniav txha hniav ntawm cov quav hniav thiab cov pob zeb thiab cov khoom ua kom nws tsis huv. Tus cwj pwm xoos txhuam hniav yog los ntawm 20% mus rau 40% ntawm cov tshuaj txhuam hniav. Qhov loj me me yog muab los ntawm qhov RDA index. Nplej zom nrog RDA qab qis tshaj li 250 tus kws kho mob tau soj ntsuam kom muaj kev nyab xeeb rau kev kho hniav (tawv nqaij). Feem ntau cov khoom siv rau kev siv txhua hnub muaj qhov Performance index R0A hauv qab 100 (hauv cov khoom siv rau cov neeg haus luam yeeb ntau dua). Rau cov hniav nrog nce rhiab heev ntawm enamel, peb pom zoo RDA nyob rau hauv 30-70.
Cov ntsiab lus ntawm cov tshuaj fluoride hauv cov tshuaj ntxuav hniav dawb yog dab tsi?
Raws li txoj cai, nws tsis txawv ntawm kev lees txais feem ntau. Nws cov ntsiab lus yog qhia ppm (mg / l). Feem ntau sib txawv ntawm 525 thiab 1450 rt. Vim qhov no, cov tshuaj txhuam hniav yuav siv tau txhua txhua hnub, suav tag nrho, zoo ib yam li lwm yam, nws muaj kev cuam tshuam cov nyom. Fluoride muaj nyob rau hauv xws li cov pastes, txo qhov kev pheej hmoo ntawm kev puas tsuaj rau tus hniav txha hniav.
Yuav tsum ceev faj yog dab tsi?
Yog tias koj muaj teeb meem txog kev tsis sib haum xeeb los yog muaj zog ntawm tus hniav laus, nco ntsoov nrog tus kws kho hniav tham ua ntej hloov cov tshuaj txhuam hniav li niaj zaus mus rau cov tshuaj txhuam hniav txhua hnub. Nws yuav pab koj nrhiav txoj kev nyab xeeb thiab tsim txiaj tshaj plaws. Yog tias cov pob txha hnav, siv cov tshuaj ntxuav hniav dawb los ntswg ntau dua rau ntawm cov ntaub so ntswg (nrog rau cov tshuaj muaj zog, lub dentin poob nws cov tawv thiab lub zog).
Lawv txawv? tshuaj txhuam hniav nrog cov tshuaj txhuam hniav dawb?
Ntawm cov tshuaj ntxuav hniav dawb feem ntau muaj nyob rau hauv peb lub khw, lub RDA index tau qhia. Muaj cov tshuaj txhuam hniav, lub hauv paus ntsiab lus uas yog los ntawm cov tshuaj lom neeg ntawm cov xim thiab lawv cov kev puas tsuaj tom ntej. Cov tshuaj no yog qhov zoo tshaj rau ntawm qhov ntsuas kev tu.
Dab tsi yog qhov ntau ntawm lawv cov kev ua?
Kev siv cov tshuab ntxuav hniav dawb, lawv cov cwj pwm ua rau kom qee cov hniav los ntawm kev tshem cov pob nti uas tsim los ntawm ntau hom dyes thiab pigments, xws li nicotine, tshuaj yej, kas fes, chocolate, liab caw, thiab lwm yam. Nws yuav tsum nco ntsoov tias cov kua nplaum txhaws tawm tsuas tshem tawm qhov tsuas qhov tsaus ntuj ntawm tus txiv tsev thiab tsis nkag mus rau hauv tus qauv.
Kuv siv puas tau siv cov pastes txhua hnub?
Cov kws kho mob qhia txog kev siv cov khoom siv ub no nrog cov khoom siv tshuaj sib xyaw nrog, xws li kev siv ntev mus rau lawv tuaj yeem ua rau sab saum toj txheej ntawm tus hniav txha hniav (nws ua nyias thiab poob nws lub ci) thiab ua kom muaj zog ntawm cov hniav. Tsis tas li ntawd, nws tsis pom zoo siv xws li muab tshuaj txhuam tom qab noj cov kua txiv hmab txiv ntoo los yog cov khoom noj khoom qab ntsev, vim cov acids nyob rau hauv lawv cov muaj pes tsawg leeg tuaj yeem ua rau nplawm nplaum ntawm tus niam laus. Nws tseem yuav tau tos 40 feeb. Tus kws kho hniav yuav pab khaws lub tshuab ntxuav hniav dawb rau koj cov hniav.
Cov pastes nrog cov nplaum teeb meem zoo rau cov hniav thiab cov pos hniav?
Tshuaj tiv thaiv hniav dawb tuaj yeem ua rau poob ntawm cov hniav txha hniav. Yog li, tej yam khoom siv no tuaj yeem siv los ntawm cov neeg uas xav kom tshem tawm qhov tsaus muag ntawm cov hniav vim los ntawm kev haus cov dej qab zib los yog cov txiv hmab txiv ntoo. Yog tias tom qab daim ntawv teev cov tshuaj txhuam hniav uas muaj cov tshuaj dawb los ntawm cov hniav tas li, nws yuav tsum tsis txhob siv nws. Peb pom zoo kom saib xyuas cov txiaj ntsim ntawm kev siv cov tshuaj zoo li no. Pib, nws tseem ceeb, tom qab (ob peb lub lis piam), lub teeb pom kev ntawm cov hniav yog tsis tshua pom - ces peb xav kom koj siv sij hawm so thiab hloov mus rau ib qho muab tshuaj txhuam nrog cov nqaij softer.
Cov tshuaj txhuam hniav puas zoo?
Vim tias cov pastes feem ntau muaj, lawv tsis tuaj yeem muaj ntau yam tshuaj yeeb dej caw, lawv daim ntawv thov yuav tsum xub ua kom zoo. Cov nyhuv ntawm kev siv lawv yog qis tshaj qhov uas muab los ntawm cov hniav ntxuav hniav dawb nrog lub teeb nyob hauv cov chaw kho hniav. Nplej zom nrog cov yam ntxwv zoo sib xws thiab cov khoom siv tshuaj ua rau nws ua tau kom qee cov hniav kom siab tshaj plaws ntawm 1-2 tones, lub teeb - rau 5-14 tones.