Demineralization: Acid breaks down the mineral matrix of the tooth. That is the exact scientific cause of decay.
Answered 1/24/2014
4.5k views
Bacteria and sugar: Decay is caused by bacteria which are naturally occurring in your mouth. When the bacteria are fed sugar, either simple like sweets or complex like bread or sugar, they produce acid which eats into the tooth.
Answered 11/26/2016
873 views
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