I had a root canal and cleaning done at his office. The cleaning, done by his hygenist, was very thorough although also painful. The root canal was a rush job. He had other patients waiting while he did my root canal. When he inserted the needle, he grabbed my gums and shook them--that hurt really bad. He was very rough throughout the procedure, pressing too hard on the tooth and rushing through the job. The root canal failed and I eventually had to get the tooth removed by an oral surgeon. The surgeon said I had a hole in the top of my tooth with some gauze in it. He said that dentists usually filled the hole after doing the root canal.
Dr. Tungol schedules a ton of patients and then rushes through his work. That can cause problems considering he's using a drill and filling teeth.
I do not recommend him-go elsewhere. There are plenty of other dentists in town.