Does snoring stop you sleeping?

I've basically had trouble getting what I would call a good night's sleep for several years now. However, I can largely date it back to two years ago, when I got my brace.

I have to have a brace because my bottom jaw is too short, and the corrective surgery (which I am getting this December) requires my teeth to be moved forward. However, since January '12, I can largely remember yawning all day from around then, and from September last year I started noticing my sleep is terrible-usually around 3-5 hours maximum, around half what I would normally get.

I've also seen TV programs where people who snore have it largely resolved by using a device in their mouth that brings their bottom jaw forward. I've been told I snore before, and since my teeth have been moved I've been told I really snore.

As I could have it resolved soon (time will tell after my op) I just wanted to ask if snoring could be the cause of my insomnia. I've ruled out a number of other causes-I've tried numerous mattresses and pillows, I haven't had any significant stressful events, I usually wear an eye mask and earplugs (they don't work, and I never needed them before). I've tried reading, non-prescription sleeping pulls, exercise and the like before bed (exercise generally not right before bed) but they don't help.

And if anyone asks why I haven't seen a doctor...I lived in a place where the doctors would dismiss me , because I was a student with my A-levels at the time my sleep troubles started, so they would have put it down to exam stress. As I had virtually no pressure on the exams (because thankfully I had done so well before) I felt no pressure whatsoever.

Many thanks for any response you can give.