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Odontología Vital

versión On-line ISSN 1659-0775versión impresa ISSN 1659-0775

Resumen

ESPINOSA HOLGUIN, Stefanny; GURROLA MARTINEZ, Beatriz  y  CASASA ARAUJO, Adán. Management of the patient with severe crowding and bilateral posterior cross bite with maxillaryexpander type Hyrax. Odontología Vital [online]. 2018, n.29, pp.49-58. ISSN 1659-0775.

Causes of transverse discrepancies of the maxilla can be genetic or environmental. We present a patient of 17 years 7 months of age. In his clinical and radiographic analysis he was diagnosed as: Skeletal Class I, hyperdivergent, malocclusion class II bilateral molar and canine, bilateral posterior cross bite, severe upper and lower crowding, crossed dental organ. The treatment consisted of maxillary expansion and alignment, opening of space for 22, leveling, detailing and retention. The appliances used were brackets prescription Roth .022 x .028, maxillary expander type Hyrax, molar bands in the upper molars 6s, tubes in 6’s and 7’s upper and lower, open coil of Niti. The retention in charge of upper and lower circumferential retainer and a bonded retainer from 13- 23 and 33-43, time of active treatment 1 year 11 months.

Palabras clave : Skeletal class II; severe crowding; maxillary expansion.

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