Hi L..
Welcome to Rochester! Webster is beautiful, and incidentally Webster has a great school system (I taught there briefly in 1995).
I go to Q Dental Group and they are wonderful, although I don't know if they're accepting new patients. They have offices in Penfield, Gates, Greece, and I think in Irondequoit. I go to the one in Penfield, right on Route 441. The best thing about them is that in many cases they only charge what your insurance will cover. I pay nothing for a regular cleaning twice a year with X-rays, and I think I paid $3 for a filling a few years ago. I had my wisdom teeth pulled recently, too, and only paid $5 per tooth. I do know they charge more for major work like root canals and stuff, but in general they are very reasonable. And they offer sedation if that is a factor for you. My daughter is too young yet for the dentist, but my sister takes her kids to the one in Greece.
Hope you find a good dentist. Good luck.
P.