JCO Journal of Clinical Orthodontics
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Locking the Screw after Rapid Palatal Expansion: A Superfluous Procedure?

VOLUME 45 : NUMBER 12 : PAGES (657-661) 2011

LUIS TOMAS HUANCA GHISLANZONI, DDS, MS

LORENZO FRANCHI, DDS, PHD

TIZIANO BACCETTI, DDS, PHD

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The rapid palatal expander (RPE) is widely used to correct maxillary constriction. Clinically, there are only a few differences among the various expansion protocols, including the number and frequency of turns (activation rate) of the midline jackscrew for rapid or slow expansion, the attachment method (banded or bonded acrylic), and the decision whether to use deciduous or permanent teeth for anchorage.

The screw of an RPE is com...

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