19/05/2026
Babies are NOT born with cavity-causing bacteria…
They get them from their parents.
The main culprit is Streptococcus mutans — a bacteria strongly linked to tooth decay. It can transfer through saliva during everyday habits like kissing on the lips, sharing utensils, tasting food before feeding, or even blowing on hot food.
Once these bacteria colonize a child’s mouth, the risk of early childhood cavities increases significantly.
This is why a parent’s oral health directly shapes a child’s future teeth. Higher cavity levels in caregivers mean a higher bacterial load passed to the child. It’s not just genetics — it’s microbial transmission.
Small daily habits matter more than most people realize. Reducing saliva-sharing behaviors and maintaining good oral hygiene as a caregiver can significantly lower a child’s exposure to harmful bacteria during these early years.