A cephalometric study of the effects of screw height on rapid maxillary expansion. | [Biomedica • 2004]

Author(s):

1. Qasim Saeed: Departments of Orthodontics and Oral Surgery, Lahore Medical and Dental College, Lahore, Pakistan

2. Riaz Qazi: Sir Ganga Ram Hospital, Lahore, Pakistan

3. Aqib Sohail: Sir Ganga Ram Hospital, Lahore, Pakistan

Abstract:

This study was undertaken to compare the skeletal expansion effects of rapid maxillary expansion (RME) using either a shallow or deep height of Hyrax expansion screw. The study includes i6 patients with narrow maxilla and mild to moderate crowding of the maxillary arch. Rapid maxillary expansion was performed in half of the patients with the shallow Hyrax expansion screw and other half with the deep screw. The angular and linear changes related to the maxilla were analyzed with Wilcoxon signed ranking test comparing posterior anterior (PA) cephalometric films obtained before and after rapid maxillary expansion. Both appliances were equally effective in skeletal expansion of maxilla. The deep screw appliance was more effective in increasing the nasal width.

Page(s): 99-103

DOI: DOI not available

Published: Journal: Biomedica, Volume: 20, Issue: 2, Year: 2004

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