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Erschienen in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie 1/2015

01.01.2015 | Original article

Effects of varying mandibular protrusion and degrees of vertical opening on upper airway dimensions in apneic dentate subjects

verfasst von: B. Piskin, PhD, O. Karakoc, MD, H. Genc, MD, S. Akay, MD, C. Sipahi, PhD, M. Erdem, MD, B. Karaman, MD, S. Gorgulu, PhD, S. Yetkin, MD, S. Ayyildiz, PhD

Erschienen in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Ausgabe 1/2015

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Abstract

Introduction

Despite numerous studies investigating the dimensional and therapeutic effects of mandibular advancement splints (MASs), data regarding the effects of differently designed individual and non-adjustable MASs on the upper airway in fully dentate apneic subjects in the sagittal plane including comparison of these effects with a placebo device are sparse. The present study aimed to determine the dimensional changes in the sagittal plane created by differently designed MASs in the upper airway in fully dentate apneic subjects and to compare these changes with the effects of a placebo device.

Materials and methods

Magnetic resonance (MR) images of 9 dentate apneic subjects with 5 differently designed MASs and without a MAS were obtained. We measured the area of the entire pharynx (velopharynx, oropharynx, hypopharynx) on these MR images and compared the dimensional changes.

Results

The dimensional changes triggered by two specific MASs (75 % of the maximum mandibular protrusion with 5 mm vertical opening, and 75 % of the maximum mandibular protrusion with 10 mm of vertical opening) in the entire pharynx in the sagittal plane were statistically significant compared to the other MASs (p < 0.05). The MAS effecting 75 % of the maximum mandibular protrusion and 10 mm of vertical opening created a significant dimensional increase only in the velopharyngeal area among the three pharyngeal sites (p ≤ 0.003).

Conclusion

While the degree of mandibular protrusion created by the MAS affects the dimensions of the upper airway, the degree of the vertical opening exerts no significant dimensional effect in the sagittal plane in fully dentate apneic patients. The mandibular protrusion effect is comparatively larger in the velopharyngeal region.
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Metadaten
Titel
Effects of varying mandibular protrusion and degrees of vertical opening on upper airway dimensions in apneic dentate subjects
verfasst von
B. Piskin, PhD
O. Karakoc, MD
H. Genc, MD
S. Akay, MD
C. Sipahi, PhD
M. Erdem, MD
B. Karaman, MD
S. Gorgulu, PhD
S. Yetkin, MD
S. Ayyildiz, PhD
Publikationsdatum
01.01.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Ausgabe 1/2015
Print ISSN: 1434-5293
Elektronische ISSN: 1615-6714
DOI
https://doi.org/10.1007/s00056-014-0259-z

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