The benefit is two fold. First, when used after meals, chewing the gum will stimulate salivary flow that has protective benefits to the teeth primarily by washing
the teeth free of food and creating a less acidic environment. Secondly, chewing the gum tends to decrease your desire to continue eating foods through out the day which leads to multiple acid exposures and an increase risk of decay.
When looking for sugar free gum, check for products containing xylitol. This is a naturally occurring sugar alcohol
sweetener used as a sugar substitute
. Research has shown that this compound has beneficial effects in maintaining your oral health