Cleaning up your teeth per year

I have cleaned up my teeth by doctor last weekend, and now my teeth looks wight and clean. Some people dislike cleaning teeth in hospital, perhaps they dislike the uneasiness and pain. And the others said someone would not better do the teeth's cleaning by doctors because of the distory of teeth's around. I prefer to clean up my teeth per year, because I often watch the uncommon color and some bad things on my teeth, and they could make you ugly and uneasy. So, for your healthy and beauty, you'd better go to advise your docor about the teeth!