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Published Date: 5-Feb-2009

Many Youngsters Suck Their Thumbs

Babies and young children often suck their thumbs. It's perfectly normal, even though some parents worry about it. As children get older, thumb-sucking becomes less common, but a small number still suck their thumbs up to the age of 5 years. The habit is harmless if the child does it occasionally, such as at bedtime, or during a stressful event.

When thumb-sucking is a problem

Older children who continue to suck their thumbs or fingers may need guidance from parents, a dentist, or an orthodontist to stop the habit. That's because chronic thumb-sucking can cause the child's permanent teeth to push forward, creating an overbite.

If you're not sure how to stop the thumb-sucking, talk with your child's dentist. If your child is already thumb-sucking less often, you probably don't need to do anything. That's particularly true if the child still has baby teeth.

If the habit stops before your child gets permanent teeth, dental problems usually correct themselves.

Treatment may be needed between the ages of 3 and 6 years. Children usually begin to get permanent teeth at about age 6. 

Some children may want to stop themselves. They may want to avoid being teased, which may occur, according to the American Academy of Pediatrics.

How to break the habit

  • Try ignoring the behavior. In other words, Some children suck their thumbs in order to get attention, even if it's negative.

  • Cover your child's hand. You might try a sock or a glove. You also can buy special mittens or a plastic thumb guard, either of which makes sucking difficult.

  • Praise your child whenever you notice that he or she is not sucking the thumb. You might mark a star on a calendar when the child goes without thumb-sucking for a day or leaves the sock or glove on all night. Stars could earn an extra story, a trip to the library, or some other reward.

  • A dentist or orthodontist can advise you how to gradually phase out these methods to keep the habit from returning.

  • The orthodontist may need to place a device inside the child's mouth that holds the thumb slightly away from the roof of the mouth. This interferes with the suction produced when thumb-sucking. The device may need to be used for 6 to 10 months.


Online Medical Reviewer: Holloway, Beth, RN, M.Ed.
Online Medical Reviewer: MMI board-certified, academically affiliated clinician
Last Review Date: 04/27/2014
© 2000-2014 Krames StayWell, 780 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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