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. 2014 Mar 19;44(2):88–95. doi: 10.4041/kjod.2014.44.2.88

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© 2014 The Korean Association of Orthodontists.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The maxillary en-masse retraction. A, Headgear group. Extraction space is closed partially by maxillary molar loss. Class II elastics are used to correct the anteroposterior relationship of the dentition. B, Miniscrew group. The combination of two midpalatal miniscrews and a modified transpalatal arch serve as a skeletal anchorage. This miniscrew anchorage system allows the maxillary anterior teeth to be retracted effectively without undesirable side-effects such as anchorage loss. There is no need to wear Class II elastics to retract the maxillary incisors and to maintain the molar relationship.