ADHP Cariology Practice Test

Xylitol is used because it disrupts the activity of caries-causing bacteria. It isn’t fermented by Streptococcus mutans to produce the acids that erode enamel, so frequent exposure with xylitol lowers the acid attack on teeth. For expectant mothers, this helps reduce caries development at a time when diet and oral bacteria can shift, and it may also lessen transmission of cariogenic bacteria to the infant, lowering the child’s future caries risk. That combination makes the statement that xylitol helps reduce the development of dental caries the best description. It isn’t primarily about reducing plaque formation, it isn’t a fluoride source, and it doesn’t increase sugar fermentation.