I came in for some tooth pain, and ended up having to get my first root canal. I was very anxious, but Dr. Cheung was very professional, personable, and efficient and the experience was much less painful and uncomfortable than I had expected. She also replaced some old fillings for me, to ensure that I wouldn't be faced with further complications on those teeth. Dr. Cheung and her staff are all very helpful and always let me know what the costs of procedures will be up front. You will be in great hands at Reston Dental Care!