Hi bsexton7
That's a good question.
Even though I am a mouth breather, they tried all types of masks on me. From the nose masks to the full face.
I am a mouth breather. I wasn't comfortable with the nose masks, the full face were better, but not quite, until the doctor found one with a ledge for my chin to rest on.
So to answer your question, your doctor may offer you a choice. He or she may make suggestions and you may choose nose or full faced.
When you do though, think of your overall health and which would provide the best care for you.
Ask questions and check out what they have. Get the one that will best suit you.
I hope you have a restful night.
Janet (SleepApnea.Sleep-Disorders.net Team Member)