I have been a twice-yearly patient of Dr. Duncan's for over seven years and would never consider changing. Originally, several procedures had to be done to correct damage done to my gums. Dr. Duncan made sure I was comfortable, and was very sensitive to my stress level! Since then, the maintenance program has kept me trouble-free. Dr. Duncan is friendly, calm, and GENTLE. His staff is caring and supportive, and I have never once felt anything less than total confidence in Dr. Duncan's recommendations and treatments.