I have to warn you that I spent a lot of money on one of those and it simply did not work.
CPAP was my salvation.
Glad to see it works for some people, but for me I felt scammed by the doctor that after a while simply said "you should find a way to control your jaw while asleep, it's a mental thing".
The doctors at the sleep center were happy to prescribe the CPAP machine (which their "partner" business supplied), as well as prescribing sleep meds and scheduling regular checkups on me.
Interestingly enough, at the end of my sleep study the technician commented to me that I appeared to have a deviated septum and perhaps I should have that looked at. The doctor who reviewed my study didn't mention that and never suggested I see an ENT for a second opinion.
Instead, I was pitched an implanted device that would ostensibly "cure" the apnea (no thank you!).
I did see an ENT, did get surgery and now sleep soundly. I've never gone back to that sleep center where they were only interested in extracting as much money from me as possible.
The first time I tried a CPAP, it just did not work for me.
Instead I bought a "boil-n-bite" mouthguard off of amazon and it worked great! ... for about 6 months or so.
At that point, I went back and pursued a CPAP and by changing from the over-the-nose headgear to the nasal pillows I finally found something that works for me.
("nasal pillows" - a euphamism if I've ever heard one)
CPAP was my salvation.
Glad to see it works for some people, but for me I felt scammed by the doctor that after a while simply said "you should find a way to control your jaw while asleep, it's a mental thing".