Abantu bajwayele ukukholelwa ukuthi ama-caries acasulwa iziphuzo ezinoshukela. Ochwepheshe base-Australia bayiphikisa le nganekwane. Ososayensi baye babonisa ukuthi uswidi neziphuzo ezibandayo ezingenashukela ziyingozi kakhulu emazinyweni kunezinye ezinoshukela. Ucwaningo lwenziwa eMelbourne. Phakathi naso, ososayensi bahlola iziphuzo ezingaphezu kwamashumi amabili.
Kwakungekho ushukela noma utshwala ekubunjweni kwabo, kodwa kwakukhona i-phosphoric ne-citric acid. Zombili zazibeka engcupheni impilo yamazinyo. Ngaphezu kwalokho, ngezinga elikhulu kakhulu kunoshukela, osolwa ngama-caries. Abantu bavame ukutshelwa ukuthi izifo zamazinyo ngokuvamile zibangelwa uswidi, kusho odokotela. Eqinisweni, lokhu kukude necala. Imvelo ene-asidi idala umonakalo omkhulu koqweqwe lwawo. Amagciwane adala izifo asebenzisa ushukela ekudleni. Futhi kuphela lapho egcwele, amagciwane ayingozi akhiqiza i-asidi, okuholela ku-koqweqwe lwawo olungenampilo. Ukungabikho kukashukela eziphuzweni kuqeda isixhumanisi sokuqala eketangeni. Amagciwane abangela izifo awakhiqizi i-asidi. Isivele ikhona eziphuzweni, amazinyo "geza" kuwo.
Ngenxa yalokho, ukuhlushwa okuphezulu kwama-acids nama-microorganisms kukhuthaza ukuqala kwe-caries. Ezimweni ezinzima kakhulu, iyakwazi ukuveza i-pulp ebucayi yezinyo futhi ingene ngokujulile ku-koqweqwe lwawo, ibhubhise ngokuphelele izinyo. Ukuze ugweme imiphumela enjalo empilweni yamazinyo, ososayensi bayeluleka ngokumelene nokudla iziphuzo ezingenashukela noma i-asidi ephezulu.