Few years back DDS Michael Ryan did a root canal and it started hurting again so I called him and without even looking at my recent xrays he started to brainstorm reasons why my tooth was in bad condition. He refused to see me even for a consultation.I think because he checked with my insurance company and they will not pay him for a retreatment on that tooth . I checked with another DDS and I was told that root canal was not done properly from him so I might risk to loose my tooth for good. Do not trust this dentist with your teeth.