A comparison of sagittal and vertical effects between bonded rapid and slow maxillary expansion procedures


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Akkaya S., Lorenzon S., Ucem T.

EUROPEAN JOURNAL OF ORTHODONTICS, cilt.21, sa.2, ss.175-180, 1999 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 21 Konu: 2
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1093/ejo/21.2.175
  • Dergi Adı: EUROPEAN JOURNAL OF ORTHODONTICS
  • Sayfa Sayıları: ss.175-180

Özet

The purpose of this study was to determine the vertical and sagittal effects of bonded rapid maxillary expansion (RME), and bonded slow maxillary expansion (SME) procedures, and to compare these effects between the groups. Subjects with maxillary bilateral crossbites were selected and two treatment groups with 12 patients in each were constructed. The Hyrax screw in the RME treatment group and the spring of the Minne-Expander in the SME treatment group were embedded in the posterior bite planes, which had a thickness of 1 mm. At the end of active treatment these appliances were worn for retention for an additional 3 months. Lateral cephalometric radiographs were taken at the beginning and end of treatment, and at the end of the retention period.