I have had braces. I had them for a long time -- I got them in when I was about eight or so. At first it was just my four front teeth on my upper jaw, and a rubber or spring in the other wire (and boy, did the spring hurt my mouth. Ouch). My teeth had been pretty bad. My top row of teeth was behind my bottom row of teeth, and my upper jaw had to be expanded. Not only did I get braces, I had to get a device to expand my upper jaw twice, wore a retainer for a little bit, and I wore headgear twice (once just at night, one when I could).
As of now, I have a cemented bottom retainer and a removable top retainer, which I only wear at night. I don't have any appointments to go to the orthodontist. I'm pretty much done. Thank goodness.