Dr. Kurzweil performed root canal and put a crown for me. I was very nervous about pain, but was surprised... no pain at all. This is without any exaggeration; the tiny needle and biting the x-ray sensor down was the only discomfort I felt. No pain during recovery, didn't take any pain pills.. I am still surprised.
Really cool office, friendly staff.. you can view your x-rays right infront of you on large screens... about 90% less radiation than conventional x-ray.