European Archives of Oto-Rhino-Laryngology

, Volume 273, Issue 3, pp 679–687 | Cite as

Rapid-maxillary-expansion induced rhinological effects: a retrospective multicenter study

  • Melih Motro
  • Michael Schauseil
  • Björn Ludwig
  • Berna Zorkun
  • Saskia Mainusch
  • Mustafa Ateş
  • Nazan Küçükkeleş
  • Heike Korbmacher-Steiner
Rhinology
First Online:
Received:
Accepted:

Abstract

Conventional dental-borne rapid maxillary expansion (RME) leads to a widening of the airways, followed by improved nasal breathing. Although combined skeletal–dental appliances are nowadays being inserted increasingly often and provide a force at the center of resistance in the nasomaxillary complex, no study exists so far that shows whether this treatment may improve the expansionary effect on the airways. In this study, low-dose computed tomography (CT) images from 31 patients (average age 14.63 ± 0.38 years) were examined retrospectively. Both records (T0 = before expansion and T1 = immediately after maximum expansion) were taken in a time interval of 25 days to avoid growth influence. Five patients were treated with Hyrax RME, 6 patients with Hybrid RME, and 20 patients with acrylic cap RME. The total airway volume increased highly significantly (mean +7272.6 mm3; P < 0.001, power = 0.998), representing an average airway expansion of +11.54 % (2.35 %/mm activation). While the nasopharynx and oropharynx showed highly significant expansion (P < 0.000, power = 0.999), the airway at the laryngopharynx did not change significantly (P > 0.779, power = 0.05). Although the patients were significantly older in the Hybrid RME group (P = 0.006), the positive rhinological effects were comparable within all groups of different appliances (P > 0.316). Hybrid RME may, therefore, be an advisable procedure in patients with nasomaxillary impairment and pronounced patient’s age.

Keywords

Rapid maxillary expansion RME Hybrid RME Airway expansion Orthodontic interdisciplinary treatment 
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Notes

Acknowledgments

The authors are grateful to Dr. Michael Robertson for editing the English of the study.

Conflict of interest

The authors hereby declare that they have no conflicts of interest.

Ethical standard

Formal consent is not required for this type of study. The retrospective processing and analysis of low-dose CTs was reviewed and approved by the ethics committee for the state of Saarland (Homburg, Germany; license number 170/12).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Melih Motro
    • 1
  • Michael Schauseil
    • 3
  • Björn Ludwig
    • 4
    • 5
  • Berna Zorkun
    • 6
  • Saskia Mainusch
    • 3
  • Mustafa Ateş
    • 2
  • Nazan Küçükkeleş
    • 2
  • Heike Korbmacher-Steiner
    • 3
  1. 1.Department of Orthodontics, Henry M. Goldman School of Dental MedicineBoston UniversityBostonUSA
  2. 2.Department of Orthodontics, Faculty of DentistryMarmara UniversityIstanbulTurkey
  3. 3.Department of Orthodontics, Faculty of DentistryMarburg UniversityMarburgGermany
  4. 4.Orthodontic praxisTraben-TrarbachGermany
  5. 5.Department of Orthodontics, Faculty of DentistryHomburg UniversityHomburgGermany
  6. 6.Trakya UniversityEdirneTurkey

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