Sleep and Breathing

, Volume 20, Issue 2, pp 689–694 | Cite as

Long-term efficacy of an oral appliance in early treated patients with obstructive sleep apnea

Sleep Breathing Physiology and Disorders • Original Article

Abstract

Purpose

The purpose of the present study was to evaluate the long-term efficacy of oral appliances (OAs) in early treated patients with obstructive sleep apnea (OSA).

Method and patients

Polysomnographic sleep recordings without and with an OA were performed at treatment start and in patients who had been continuously treated with OAs for at least 15 years.

Results

Nine patients (eight men) with a median age of 68.1 years (interquartile range (IQR) 60.0 to 76.3 years) and a median treatment time of 16.5 years (IQR 16.3 to 18.0 years) were included. The apnea–hypopnea index decreased from a median of 17.3 (IQR 9.7 to 26.5) to 7.2 (IQR 4.0 to 9.6; p = 0.03) at the short-term follow-up. After long-term use, the apnea–hypopnea index was 32.4 (IQR 22.2 to 58.8) without the device and 35.1 (IQR 13.6 to 46.2) with it (p = 0.08). There were increases in the apnea–hypopnea index, both without the device (p = 0.02) and with it (p = 0.008). The degree of mandibular advancement did not differ between the two study occasions (p = 1.0).

Conclusions

Patients treated with oral appliances may experience deteriorations in disease severity and treatment efficacy during continuous long-term OA treatment. Regular follow-up schedules with renewed sleep apnea recordings should be considered for these patients in order to avoid suboptimal or a total loss of effects on sleep apneas.

Keywords

Obstructive sleep apnea Mandibular advancement device Oral appliance Long-term 

Abbreviations

AHI

Apnea–hypopnea index

BMI

Body mass index (kg/m2)

OA

Oral appliance

OSA

Obstructive sleep apnea

Notes

Compliance with ethical standards

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Conflict of interest

The author certifies that she has no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaux; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.

Funding

The County Council of Västerbotten provided financial support in the form of grants. The sponsor played no role in the design or conduct of this research.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of OdontologyUmeå UniversityUmeåSweden

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