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

2010; E.H Angle Education and Research Foundation; Volume: 80; Issue: 4 Linguagem: Inglês

10.2319/092409-530.1

1945-7103

Gökmen Kurt, A. Ataç, Mustafa Sancar Ataç, Hakan Alpay Karasu,

Craniofacial Disorders and Treatments

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.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).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.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.