*13.3.2. Fabricated TRD appliance construction*


TRD-type appliances are found to be effective in mild to moderate OSA treatment. They decrease AI, HI, AHI, oxygen desaturation, and excessive daytime sleepiness and increase minimum oxygen desaturation and genioglossus muscle activity. But the patient compliance is low with TRDs because of the irritation in the tongue, hypersalivation, uncomfortable feeling, and non-esthetic appearance.
