Thumbsucking is very normal for infants and toddlers, but should be decreases by the ages of three to four, and stop by the age of five. It is very normal response form anxiety and stress of one child. It is also very reassuring to them.
When child reaches the age where he/she should stop thumbsucking, but still continue doing it, parents should use some tactics to avoid the continues of this habit. And because of this some of you should have at least parenting advice to help their children. prolonged thumb sucking of your child can produces some significant problems with chewing, speech and facial appearance.