The introduction of a preformed removable quadhelix appliance with curved rotation sheaths for insertion and removal has overcome many of the clinical problems associated with the fixed quadhelix appliance.
The design, fitting and activation of the appliance are described. Various applications and modifications are discussed.
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References
1.
BellR. A. and Le CompteE. J. (1981) The effects of maxillary expansion using a quadhelix appliance during the deciduous and mixed dentitions, American Journal of Orthodontics, 79, 152–161.
2.
BenchR.W., GuginoC. F. and HilgersJ. J. (1978) Bioprogressive therapy. Parts 8 and 11, Journal of Clinical Orthodontics, 12, 279–298 and 505–521.
3.
BirnieD. J. and McNamaraT. G. (1980) The Quadhelix Appliance, British Journal of Orthodontics, 7, 115–120.
4.
CoffinW. H. (1881) A generalised treatment of irregularities.Transactions of the International Congress of Medicine, London; J. W. Klackmann, 3, 542–547.
5.
FrankS. W. and EngelG. A. (1982) The effects of maxillary quadhelix appliance expansion on cephalometric measurements in growing orthodontic patients. American Journal of Orthodontics, 81, 378–389.
6.
FrielS. and McKeagH. T. A. (1939) The design and construction of fixed orthodontic appliances in stainless steel, Dental Record, 59, 359–388.
7.
GuginoC.F. (1977) An Orthodontic Philosophy, Rocky Mountain publications Ltd., 11th Edition part 8, 33.
8.
RickettsR. M. (1973) Features of the Bioprogressive Therapy. Rocky Mountain Orthodontic Publications, 33–36.
