| Thumbsucking
You may be concerned about your child's thumbsucking and wonder if it is harmful, at what age your child should stop, or what could happen if your child doesn't stop.
Sucking is a natural reflex for children. As infants get older it serves many purposes. Sucking on their thumbs, fingers, pacifiers or other objects may make babies feel secure and happy and help them learn about their world. Young children may also suck to soothe themselves. Since thumb sucking is relaxing, it may help them fall asleep.
After the permanent teeth come in, sucking may cause problems with the proper growth of the mouth and alignment of the teeth. It can also cause changes in the roof of the mouth. The intensity of the sucking is a factor that determines whether or not dental problems may result. If children rest their thumbs passively in their mouths, they are less likely to have difficulty than those who vigorously suck their thumbs. Some aggressive thumbsuckers may cause problems with their baby (primary) teeth. If you notice changes in your child's primary teeth, consult your dentist.
Children should have ceased sucking by the time the permanent front teeth are ready to erupt. Usually children stop between the ages of two and four years.
Pacifiers can affect the teeth essentially the same ways as sucking fingers and thumbs. However, it is often an easier habit to break.
Resource: American Dental Association
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