Dr. Au is a nice guy--warmhearted, nice to patient, as well as fair treatment charge. However,I'm afraid I can't give credit to his treatment to me based on my unhappy experience in his office. Actually, It's a common procedure to filling two bad teeth. Both of them are not complex cases--very small teeth. But I suffered from teeth pain for more than two weeks after I was treated... Even it's still painful now. I don't know how it could happen. But I think I won't, and won't recommend my friends either to his office anymore