Tooth decay is the most common chronic disease affecting children, and adults are also vulnerable to cavities. Dental sealants and topical fluoride treatments provide helpful defenses, but the most useful cavity-fighter might be right under your nose. Research from the American Society for Microbiology suggests that a key ingredient in saliva can help to protect your teeth from the bacteria that causes tooth decay. Keep reading to find out about the study and what it means for your oral health!