In growing individuals who have maxillary deficiency, consideration can be given to treatment procedures which will encourage orthopedic change within the maxillary bone (Pig. 8.22). These can include rapid maxillary expansion, and the use of reverse headgear, but there is much controversy and uncertainty surrounding the effect and stability of this type of treatment. However, there is some evidence in the literature7 that favorable mesial change in the maxilla can be produced, thereby assisting in mesial movement of the upper incisors toward PIP.
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