Very disappointed with Dr. Steven Nguyen, he performed a root canal and crowned the tooth. Soon after the gum around that tooth/crown began swelling and I felt discomfort from the root canal. Went to (2) other Dentists only to be told it was a failed root canal with an infection deep where he performed the root canal. Went back to Dr. Steven Nguyen to have it repaired and was told the tooth was broke, and was not a failed root canal the tooth needs to be pulled. 3 Dentists have taken X-Rays confirming the tooth is NOT cracked, but a failed root canal. Do NOT trust this Dentist! Now I have to pay another Dentist to repair his substandard work. Never again, a complete waste of time and money.