Dental and Medical Problems

Dent Med Probl
Index Copernicus (ICV 2021) – 132.50
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CiteScore (2021) – 2.0
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ISSN 1644-387X (print)
ISSN 2300-9020 (online)
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Dental and Medical Problems

2022, vol. 59, nr 4, October-December, p. 583–591

doi: 10.17219/dmp/133513

Publication type: original article

Language: English

License: Creative Commons Attribution 3.0 Unported (CC BY 3.0)

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Rabah N, Al-Ibrahim HM, Hajeer MY, Ajaj MA. Evaluation of rapid versus slow maxillary expansion in early adolescent patients with skeletal maxillary constriction using cone-beam computed tomography: A short-term follow-up randomized controlled trial. Dent Med Probl. 2022;59(4):583–591. doi:10.17219/dmp/133513

Evaluation of rapid versus slow maxillary expansion in early adolescent patients with skeletal maxillary constriction using cone-beam computed tomography: A short-term follow-up randomized controlled trial

Nancy Rabah1,B,D,E,F, Heba Mohamed Al-Ibrahim1,A,C,D,E,F, Mohammad Younis Hajeer1,A,C,D,E,F, Mowaffak Ahmad Ajaj1,C,D,E,F

1 Department of Orthodontics, Faculty of Dentistry, University of Damascus, Syria


Background. Maxillary expansion is one of the treatment options for the correction of the skeletal constriction of the upper jaw. However, evidence regarding the best treatment effects with the use of rapid vs. slow maxillary expansion in the early adolescence period (i.e., between the age of 12 and 16 years) is still lacking in the available literature.
Objectives. The aim of the present study was to investigate the effectiveness of rapid and slow maxillary expansion in treating posterior skeletal constriction, and to compare the 2 techniques in terms of skeletal and dentoalveolar changes by using cone-beam computed tomography (CBCT).
Material and methods. The sample consisted of 34 patients (15 males and 19 females) suffering from posterior skeletal constriction. They were randomly allocated either to the rapid maxillary expansion (RME) group (17 patients aged 13.76 ±0.32 years) or to the slow maxillary expansion (SME) group (17 patients aged 14.02 ±0.28 years). The skeletal and dental landmarks, and changes in the posterior dimensions were examined using CBCT radiographs at the beginning of treatment (T1) and at the end of the observation period (T2).
Results. There were no significant differences between the 2 groups in terms of skeletal and dental changes except the amount of change in the inter-premolar width at the root apex, which was greater in the SME group (p = 0.007), as well as the amount of change in the skeletal palatal width in the molar region, which was also greater in the SME group (p = 0.008).
Conclusions. Both maxillary expansion protocols were effective in treating posterior skeletal constriction. The average changes in the skeletal and dental widths were generally similar in both groups. Therefore, SME can be considered as an alternative to RME in patients with skeletal maxillary constriction in the early adolescence period.

Key words

cone-beam computed tomography, maxilla, palatal expansion technique, constriction

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