The Quad-helix appliance and their variations

Mario Sergio DUARTE

The aim of this present article was to show the efficiency of several drawings of Ricketts Quad-helix appliance in the correction of dentoalveolar disharmonies. Due its varied forms, as well as its activation, the Quad-helix became a useful accessory not only in overcorrecting the transversal discrepancy and sagittal, but also in treating Angle Class II Division 1 malocclusions, mainly when molar rotation is a necessary part of the treatment. It is also relevant its effect in the treatment of anterior open-bites. It gives support in the treatment of environmental factors that contribute to exacerbate the development of malocclusions. In relation to dental arch alignment, the Quad-helix appliance abbreviate this treatment phase in 4 to 5 months, what would take, otherwise, much more time and at least a great series of changes of arches in conventional mechanics of leveling. Therefore, this work has the purpose of showing some of the possible activations, as well as some variations, of the Quad-helix appliance that contribute to get long-term stable results.

Keywords: Quad-helix. Expansion. Bioprogressive technique.

Sunday, December 29, 2024 00:49