question: What prevents the destruction of tooth enamel?
choices.text: protection treatment Flouride the cervix keratin estrogen Soda Nitrogen
choices.label: A B C D E F G H
fact2: Tooth decay is a destruction of the tooth enamel.
combinedfact: Flouride prevents the destruction of tooth enamel. 
formatted_question: What prevents the destruction of tooth enamel? (A) protection (B) treatment (C) Flouride (D) the cervix (E) keratin (F) estrogen (G) Soda (H) Nitrogen