Thumb sucking is normal in infants and toddlers—but when should parents be concerned?
- Normal Development: Most children stop thumb sucking between ages 2–4.
- Risks if it Continues: If the habit persists beyond age 4, it may cause:
- Open bites
- Overbites
- Misaligned teeth
- Speech difficulties
- Research Evidence: A study in the American Journal of Orthodontics & Dentofacial Orthopedics (2016) confirmed prolonged thumb sucking increases risk of malocclusion.
- Gentle Approaches: Positive reinforcement works better than punishment. Sometimes dentists can provide habit-breaking appliances if needed.
👉 About 15% of children still suck their thumbs after age 5 (AAPD).
No need to panic if your toddler sucks their thumb—but if it continues past preschool years, talk to your dentist.
