Snoring: An Annoyance or a Serious Health Problem (Obstructive Sleep Apnea)?

[...]ventilation may be decreased (hypopnea) or absent (apnea) for several seconds until upper airway muscle tone increases, allowing the resumption of normal ventilation. Some appliances such as palatal lift appliance elevate the soft palate and prevent its vibration which is the most frequent cause of snoring. [...]although not all snorers have OSA, snoring is a cardinal symptom of OSA and is now recognized as a clinical entity that may be related to conditions with increased morbidity.