Introduction
Thank you for choosing the Narval CAD/CAM (computer aided design and computer aided
manufacturing) oral appliance. This document provides instructions for patients using the Narval CC
™
appliance. Please read the entire instructions for use before using your device and, if you have any
questions, contact your dental practitioner.
Mechanism of action
Your Narval CC appliance maintains the lower jaw (mandible) in a forward position, which in turn draws
the base of the tongue forward and widens the airways in the pharyngeal area behind the tongue.
It is designed to help open up the space behind the tongue and increase the tension of relaxed soft
tissues to help reduce snoring and decrease the number of apnoeas and hypopnoeas that may disturb
the physiological sleep cycle.
Indications
The Narval CC appliance is a custom-made
mandibular advancement device (MAD),
available under medical prescription, and
intended to treat adults with:
• Mild to moderate obstructive sleep apnoea
(OSA)
• Severe obstructive sleep apnoea in the case
of continuous positive airway pressure (CPAP)
failure, non-compliance or refusal (second-line
treatment)
• Snoring
Contraindications
The Narval CC appliance is contraindicated for
patients who:
General contraindications
• Have central sleep apnoea
• Have severe respiratory disorders
(other than OSA)
• Are under 18 years of age
Dental contraindications
• Have loose teeth or advanced periodontal
disease
• Have a completely edentulous lower arch unless
a complete denture mechanically retained is
present (e.g. retained by implants)
• Have a completely edentulous upper arch
unless a complete upper denture is present
• Have short teeth and/or insufficient undercuts
to retain the device
ENGLISH 3
ENGLISH
Healthy patient
(airway open)
Airway states
Patient with
untreated OSA
(airway closed - apnoea)
Patient treated
with Narval CC
appliance
Patient with
untreated snoring
(airway partially closed)
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