Stability of surgically assisted rapid maxillary expansion and orthopedic maxillary expansion after 3 years' follow-up

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Kurt G., Altug-Atac A. T., Atac M. S., Karasu H. A.

Angle Orthodontist, vol.80, no.4, pp.613-619, 2010 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 80 Issue: 4
  • Publication Date: 2010
  • Doi Number: 10.2319/092409-530.1
  • Journal Name: Angle Orthodontist
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.613-619
  • Ankara University Affiliated: Yes


Objective: To evaluate the stability of surgically assisted rapid palatal expansion (SARME) and orthopedic maxillary expansion (OME) after 3 years of follow-up, and compare these changes with a control group. Materials and Methods: The subjects of the study were divided into three groups. Group 1 was composed of 10 patients (6 males, 4 females) with a mean age of 15.51 years (range: 13.33-17.58 years) and treated with OME, Group 2 comprised 10 patients (7 males, 3 females) with a mean age of 19.01 years (range: 16.25-25.58 years) and treated with SARME. Group 3 was the control group, consisting of 10 untreated, skeletal Class 1 subjects (6 males, 4 females) with a mean age of 15.27 years (range: 13.42-17.00 years) and matched to the OME group for sex and age. Lateral cephalometric and posteroantererior films were taken before expansion (T1), postexpansion (T2), and 3 years after the retention period (T3). Results: After OME and SARME, significant increases were observed for both dental and skeletal transverse widths (P <.01). After 3 years of follow-up, maxillary basal width decreased 1.35 ± 0.44 mm in the SARME group and 1.19 ± 0.41 mm in the OME group, while upper molar width decreased 2.23 ± 1.24 mm in the SARME group and 2.79 ± 1.01 mm in the OME group. Conclusions: Both the OME and SARME procedures remained stable after 3 years of follow-up with some amount of postretention relapse, compared with the control group. © 2010 by The EH Angle Education and Research Foundation, Inc.