For babies and toddlers, thumb sucking and pacifiers can be a normal part of self-soothing. The concern is usually not that the behavior exists, but how long and how strongly it continues as the mouth develops. Through infant oral care, our team at Pediatric Dentistry of Burke can watch the teeth and bite as your child grows. Dr. David Treff is a board-certified pediatric dentist who completed specialty training in pediatric dentistry at Louisiana State University Health Sciences Center.
When Can Thumb Sucking or Pacifier Use Affect the Bite?
Early pacifier and finger sucking are considered normal. According to AAPD guidance, pacifier use beyond 18 months can influence the developing mouth, and children who continue non-nutritive sucking beyond age 3 have a higher incidence of bite problems.
Finger sucking and pacifier use do not always affect the mouth in the same way. The AAPD notes that finger habits are more strongly associated with increased overjet and a bite where the upper teeth sit farther forward than pacifier habits.
Possible changes include:
- An open bite, where the upper and lower front teeth do not meet when the mouth closes
- A posterior crossbite, where the upper and lower back teeth do not line up as expected
- Increased overjet, where the upper front teeth sit farther forward
Age is only part of the picture. How often your child sucks a thumb or uses a pacifier, how forcefully they do it, and how long each episode lasts can also affect what we see during an exam. Two children with a similar habit may not develop the same bite changes.
When Should You Ask a Pediatric Dentist?
You do not have to wait until the front teeth visibly shift. Bring up continued thumb sucking or pacifier use during periodic exams and cleanings, particularly as your child approaches age 3.
Regular visits give us a chance to compare changes over time rather than judging the bite from a single moment. If tooth or jaw alignment begins to change, orthodontic planning can guide whether continued observation is enough or whether the behavior needs more attention. These conversations are also part of broader pediatric oral health care, where parents can ask what is normal for their child’s stage of development.
Ask Us About Thumb Sucking or Pacifier Use
If you are wondering whether thumb sucking or pacifier use is beginning to affect your child’s teeth, we can look at the bite and explain what we see. Contact us at Pediatric Dentistry of Burke or call 703-712-8077 to arrange a visit with Dr. Dave in the Burke and Springfield, VA, area.
