Obstructive sleep apnea is a medical condition involving repeated airway obstruction during sleep. Snoring, tiredness, or the appearance of the mouth cannot establish the diagnosis or measure its severity. Medical assessment and appropriate sleep testing guide that part of care. A dental sleep assessment asks whether the mouth and jaw can support a suitable oral appliance and what oral risks need to be addressed.
If you have a diagnosis or a recommendation from a sleep clinician, bring the relevant report and treatment history. If sleep apnea is only suspected, the next step may be medical referral before an appliance decision. The dental findings, your preferences, and the medical treatment plan are considered together. An ordinary nightguard is not a substitute for a prescribed sleep apnea appliance, and reduced snoring does not by itself show that apnea is controlled.