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Thumb Sucking—A Most Common Habit

Little Baby Sucking Their ThumbWhat’s the most common thing nearly half of American toddlers do when they’re tired, relaxing, sleeping or being scolded? They suck their thumbs!

Thumb-sucking is the earliest and most common habit among children. It’s nothing for parents to worry about—unless the habit persists. Only after age four does thumb-sucking threaten to damage children’s teeth

Some thumb-suckers simply rest the thumb in the mouth, sucking only at certain times. Others work at the habit, and can displace teeth severely. If, when you remove the thumb from your child’s mouth you hear a “popping,” it signals a great deal of pressure on the teeth that may cause an overbite or underbite. If the child is over four, you may want to discuss the habit with an orthodontist.

To help break a child of thumb-sucking, parents should:

  • Avoid punishing the child
  • Provide play materials to occupy the child’s hands
  • Keep supervision to a minimum
  • Keep the home environment happy

One of the worst approaches is parental pressure—it can have a negative effect. On the other hand, peer pressure often works well, encouraging the child to imitate “grown-up” behavior.

Sometimes an orthodontic appliance can prevent or replace a thumb-sucking habit. Once a child becomes accustomed to the appliance, he or see may no longer interested in thumb-sucking.

The first step is to determine when and why a child is thumb-sucking. We’ve had lots of experience. Give us a call—we may be able to help.

About Yuri Kaneda, DDS

Dr. Yuri Kaneda was born in Japan and immigrated to the US when she was 4 years old with her family. She lived in Ohio, Nebraska, and Illinois before finally settling in the San Diego area. A graduate of Bonita Vista High School, she went on to the University of California Berkeley where she obtained her Bachelors in Microbiology and Immunology. After working for 2 years in growth plate research at University of California San Diego, she went to the University of California San Francisco Dental School for her Doctor of Dental Surgery degree. Upon graduation, she returned to San Diego where she worked as an associate in the practice of Drs. Morimoto and Yaryan, her childhood dentist. She then started her own practice in 1995 and has been at her present location since 1999 which happens to be across the street from her high school!

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