10/17/2025
In a nutshell…
Tooth decay isn’t just caused by sugar or bad brushing—it’s an infectious disease. The cavity causing bacteria Streptococcus mutans feed on sugars, releasing acids that erode enamel and create cavities over time.
These bacteria spread through saliva, often from parent to child by kissing, sharing utensils, or blowing on food. A baby’s mouth is sterile at birth—bacteria enter only through contact.
Once inside, they attach to teeth and multiply rapidly in sugary environments. Early colonization means even milk teeth can decay quickly if hygiene and feeding habits aren’t carefully managed.
_________
Disclaimer: This information is for educational purposes only and should not replace professional dental advice.