Unilateral posterior crossbite often involves only one tooth, especially upper first molar; in these cases it is never easy to obtain an asymmetrical movement of a molar and a proper planning of the orthodontic device with its anchorage is necessary to avoid arch overexpansion. Thanks to its simplicity and efficacy, the modified Quad Helix here described represents a valid therapeutic tool in cases of isolated posterior crossbite.
Asymmetric Expansion with a Modified Quad Helix for Treatment of Isolated Crossbite / Magnifico, Marisabel; Di Blasio, Alberto; Cassi, Diana; Di Blasio, Chiara; Gandolfini, Mauro. - In: CASE REPORTS IN DENTISTRY. - ISSN 2090-6447. - 2017(2017), p. 7275846. [10.1155/2017/7275846]
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