Tshawb nrhiav "qab zib".
… Xyoo 1947, Lub Chaw Rau Kev Tshawb Fawb Qab Zib tau tshaj tawm kaum xyoo, $ 57 kev tshawb fawb los ntawm Harvard University kom paub seb cov piam thaj ua rau cov hniav thiab yuav ua li cas kom tsis txhob muaj. Xyoo 1958, Lub Sijhawm magazine tau luam tawm cov txiaj ntsig ntawm kev tshawb fawb uas tau tshwm sim nyob rau hauv Dental Association Journal. Cov kws tshawb fawb tau txiav txim siab tias tsis muaj txoj hauv kev los daws qhov teeb meem no, thiab nyiaj txiag rau qhov project tau raug tso tseg tam sim ntawd.
“… Txoj kev tshawb fawb tseem ceeb tshaj plaws ntawm cov piam thaj hauv tib neeg lub cev tau ua tiav hauv Sweden xyoo 1958. Nws tau hu ua "Vipekholm project". Ntau tshaj 400 tus neeg mob hlwb noj qab haus huv tau ua raws li kev tswj hwm kev noj haus thiab raug soj ntsuam rau tsib xyoos. Cov kev kawm tau muab faib ua ntau pawg. Qee tus noj cov carbohydrates yooj yim thiab yooj yim tsuas yog thaum noj mov, thaum lwm tus noj mov ntxiv uas muaj sucrose, chocolate, caramel lossis toffee nyob nruab nrab.
Ntawm lwm tus, txoj kev tshawb no coj mus rau qhov xaus hauv qab no: Kev siv sucrose tuaj yeem pab txhawb kev loj hlob ntawm caries. Qhov kev pheej hmoo yog nce ntxiv yog tias sucrose tau noj nyob rau hauv daim ntawv nplaum, uas nws adheres rau saum npoo ntawm cov hniav.
Nws muab tawm tias cov khoom noj uas muaj qhov siab ntawm sucrose hauv daim ntawv nplaum ua rau cov hniav puas tsuaj ntau tshaj plaws, Thaum lawv tau noj cov khoom noj txom ncauj ntawm cov zaub mov tseem ceeb - txawm tias qhov kev sib cuag ntawm sucrose nrog cov hniav ntawm cov hniav yog luv. Caries uas tshwm sim vim kev noj ntau dhau ntawm cov khoom noj uas muaj sucrose tuaj yeem tiv thaiv tau los ntawm kev tshem tawm cov khoom noj tsis zoo los ntawm kev noj zaub mov.
Txawm li cas los xij, nws kuj tau pom tias muaj qhov sib txawv ntawm tus kheej, thiab qee zaum, cov hniav lwj tseem tshwm sim txawm tias tshem tawm cov suab thaj ua kom zoo los yog qhov kev txwv siab tshaj plaws ntawm cov piam thaj thiab carbohydrates.