Skip Navigation



The European Journal of Orthodontics Advance Access published online on October 1, 2009
The European Journal of Orthodontics, doi:10.1093/ejo/cjp057
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Ramoglu, S. I.
Right arrow Articles by Sari, Z.
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ramoglu, S. I.
Right arrow Articles by Sari, Z.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2009. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Maxillary expansion in the mixed dentition: rapid or semi-rapid?

Sabri Ilhan Ramoglu* and Zafer Sari**

* Department of Orthodontics, Faculties of Dentistry, Erciyes University, Kayseri
** Department of Orthodontics, Faculties of Dentistry, Selçuk University, Konya, Turkey

Address for correspondence Dr Sabri Ilhan Ramoglu, Dishekimligi Fakültesi, Erciyes Üniversitesi, Ortodonti A.D., Melikgazi, Kampüs, Kayseri 38039, Turkey, E-mail: ilhanramoglu{at}yahoo.com


  Abstract

The purpose of this study was to investigate the effects of rapid maxillary expansion (RME) and semi-rapid maxillary expansion (SRME) in the mixed dentition period. The SRME group consisted of 18 patients (11 girls and 7 boys) with a mean age of 8.63 ± 1.09 years and the RME group 17 patients (11 girls and 6 boys) with a mean age of 8.78 ± 1.21 years. A splint type tooth- and tissue-borne modified bonded RME appliance was used, with the patients activating the screw two-quarter turns per day for the first week, followed by one-quarter turn every other day in the SRME group and two-quarter turns per day throughout treatment in the RME group. The average treatment time was 57.16 ± 21.52 and 21.23 ± 8.36 days for the SRME and RME groups, respectively. A Wilcoxon signed rank test was used to evaluate the treatment effects [pre-(T0) – post-(T1) treatment changes] for both the SRME and RME groups and a Mann–Whitney U-test to determine the differences between the two groups (T0–T1 changes SRME versus T0–T1 changes RME).

For both groups, the maxillary base, nasal cavity width and upper intercanine and intermolar distances were increased, and the upper molars tipped buccally. The only statistically significant (P < 0.05) difference between two groups was in inferior movement of posterior nasal spine (PNS) relative to the SN plane (SNboxhuPNS). This measurement increased in both groups yet significantly more in the RME group. The results suggest that RME and SRME have similar effects on dentofacial structures both in the transverse, vertical, and sagittal planes.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.