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Put the kibosh on thumb-sucking

Most infants stop sucking their thumbs by age 2. But if the habit continues past age 3, seek help from a pediatrician or pediatric dentist. The habit can cause crooked teeth or problems with your child’s bite. To help him or her kick the habit, offer up praise for not sucking a thumb. Your child’s doctor may also give you a device that makes it uncomfortable to suck on fingers. Never use punishment to get a child to kick the thumb-sucking habit.