we've been in this since he was 5 months, and, 6 weeks later, it's subsiding somewhat. I still nurse him several times a night, mostly between 2 and 6 a.m. Plus, he's been peeing gallons at night lately--I double up prefolds, and he still soaks them a few times a night.
He's still not a great sleeper (maybe 2 hrs of naps during the day, and 9-10 hrs a night, but not all at once, of course), but things are getting better--or maybe I've just lost it and am adapting to being sleep deprived! Also, you probably already do this, but I just lie on my side to nurse (and we cosleep), so I can still be half asleep.
I don't think it's the teething as much as the desire to practice new skills at all hours. My husband put it this way: if we had just learned to fly practically over night, wouldn't we all be waking up in the night to practice our cool new skill?
Partial solution: I've been trying to put him to bed very early--easier now that it's getting dark earlier. I've gotten it to about 7:45 or 8, which is miraculous considering how things have been going. I'm still letting his nap schedule fluctuate based on when he wants to rest, but try to keep it within a certain range, so that he's not napping anywhere near bed time. Also, I try not to schedule more than one grown up activity per day (like running errands, or attending a LLL meeting), which works for me since I don't have other kids yet. This makes him more relaxed, and gives more time for crawling around during the day, which helps with bed time and more solid sleep. We also go for a walk in the evening with our sling, which helps calm him and often puts him to sleep.
I got "The No Cry Sleep Solution" at the library--but accidentally got the toddler version, not the baby version. Still, it's helpful. It's a decent balance between being very attached to your baby yet also having a little bit of time for yourself. I've also read things by the Searses, and I agree with them most of the time, but goodness, that Mrs. Sears must have had really easy babies, or else been made of superhuman stuff.