Unlike many dentists I have seen, Dr. Woo does all of the cleaning work. The time and effort that he spends closely examining my teeth guarantees that nothing will be missed. Some may say that Dr. Woo is a bit rigorous in his efforts- all I have to say is that its hard beat that clean mouth feeling that I get after leaving his office. It lasts for months. Dr. Woo has fine attention to detail and backs his work 110 percent.