Most children should grow out of thumb sucking and pacifier use between the ages of 3 to 4. As long as the habit is discontinued well before their permanent teeth come in, your child should be fine. If, however, they continue this habit as their permanent teeth come in, more damage can occur, and it is important to help your child discontinue their habit.
The most effective way to accomplish this is to simply explain to your child that they must do so in order for their teeth to come in straight. You would be surprised at how effective simply explaining this to your child can be. When they do suck their thumb or use a pacifier give them a gentle verbal reminder.
Under no circumstances should you give negative reinforcement or punish a child for this behavior as this often causes the child to further continue the habit. Many professionals urge parents to tape their children's fingers or apply bitter tasting solutions to the fingers to prevent thumb sucking. We don't recommend this method. It is not as effective as providing positive reinforcement when children are trying to stop sucking their thumb.
A gradual slowing down of the use is recommended. Take small segments, during a TV program, one hour before dinner, etc., and have them stop sucking their thumb or using the pacifier. Then extend the time to other times of the day. Gradually increasing the number of hours in which they don't use the pacifier or suck their thumb will be an easier transition until they only need it to go to bed, which will be the last time period to eliminate.
A reward system is helpful when they comply. Also, when kids have colds, are congested, and can't breathe is a time for them to understand that thumb/pacifier usage is uncomfortable and there is a reason to stop. The habit then can be transfered to the security of a stuffed animal, doll, etc. This can be very helpful. Remember, sucking fingers and pacifiers are a security system for the child, and touching, hugging and spending time building a child's self esteem by parents will go a long way in growing a well adjusted and fun child.
© Copyright The Center for Pediatric Dental Care