Occasionally, we see people who cannot seem to close their mouth. Many of these people have a problem called Apertognathia, or "Open Bite". This is caused by excessive growth of the back part of the upper jaw, resulting in the molars being positioned lower than the front teeth. When the mouth attempts to close, the molars are the first to contact, preventing the front teeth from coming together. This causes a functional problem in that the incisors are not able to do their job of cutting food. The inability to close the mouth also makes pronunciation of certain words impossible. In addition, it affects the person's appearance.
Dr Chan demonstrates how these problems are overcome in a 21 year old young man in this makeover video case study.
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