A) CPAP - The recommended treatment for OSA is a positive pressure treatment called The patient wears a mask over the nose that allows a machine to keep a small amount of pressure at the back of the throat. The tongue floats on a cushion of air and prevents the pauses in breathing associated with OSA.  

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B) Oral Device - Dental Devices work by moving the lower jaw forward, which pulls the tongue away from the back of the throat.  The higher the apnea/hypopnea index the less effective the treatment.  This treatment may be less effective than CPAP therapy, especially in patients who are obese. 

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C) Surgery - is now not commonly performed for treating OSA. It is often not effective, and CPAP may not work as well after surgery.

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