###Human: Why am I having creamy and black teeth with bad smell? ###Assistant: Hi. I read your query and can understand your concern. It seems like you have staining of teeth and plaque accumulation. Our mouth contains a great number of resident bacteria. Sometimes some individuals have staining bacteria which leads to physiological stains. This is not any pathology or disease. This staining often leads to plaque accumulation and bad smell from the mouth. You need professional teeth cleaning (scaling and polishing) regularly (usually every six months). Continue brushing twice daily with any toothpaste that suits you.