I was referred to Dr. Nazeri from my regular dentist because my root canal on my abscessed bicuspid was going to be too difficult to do without the microscope.
I've had root canals before, and for the most part they're mostly painless if you can handle the vibration in your head when they're grinding the inside of your tooth away.
I was in and out in literally 30 minutes. They did a temporary filling as I am going back to my regular dentist in a week. They were very fair with me on the price as it was an emergency procedure and I don't have health insurance through my employer yet.
I felt ZERO pain and the dental assistants were very nice, they played music, and were very attentive to my needs.
Also you can ask for the shot that doesn't contain the epinephrine such as I had to do because of my sensitivity to stimulants.
Highly recommend if you need very specific and complicated dental work.