Another method of expansion is the use of RME. In case of constricted maxillary arch and posterior crossbite RME [Rapid Maxillary Expansion] should be given to expand the maxillary base. A fixed appliance can be put along with RME and the space available by expansion can be utilized to decrowd or to retract anterior teeth.Nicholas Germane et al say: A non- extraction orthodontic treatment plan incorporating dental arch expansion is often initiated in patients who exhibit minimal crowding or who benefit from the increased lip support afforded by incisor advancement.
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