Best Pediatric Dentist in Chennai. Thumb Sucking & Pacifiers – Are They Bad for Teeth? In short: not always—but they can be if they go on too long. ✅ The Good: Natural Soothers: Both thumb sucking and pacifiers can help calm and comfort babies. They’re completely normal habits during infancy. SIDS Prevention: Pacifier use at bedtime has been linked with a reduced risk of sudden infant death syndrome (SIDS). 🚫 The Not-So-Good (if the habit continues beyond age 2-4): Teeth Alignment Issues: Prolonged sucking—especially of the thumb—can affect how the teeth and jaws develop, leading to: Open bite Crossbite Protruding front teeth Speech Problems: These habits can sometimes interfere with proper speech development. Thumb vs. Pacifier: It's usually easier to wean a child off a pacifier than a thumb! 👩‍⚕️ Tips from a Pediatric Dentist: Try weaning off the pacifier by 18 months to 2 years. Thumb sucking should ideally stop by age 4 to avoid dental issues. Use positive reinforcement—not punishment—to help kids quit the habit. Visit your pediatric dentist early for advice tailored to your child. Best kids dentist near me