Look at the different parts of it. It is not a smooth surface, and all those bumps and crevices can harbor bacteria. Half the bacteria in your mouth lives on your tongue. This can form a film over your tongue, and contribute to a variety of health problems. Your tongue should be pink, and stark discolorations should be taken note of and remedied. Be sure to see an oral health professional if you experience any of these things:  Strong concern regarding changes in the appearance of your tongue. Tongue coating persists longer than two weeks. If you experience persistent tongue pain. White areas or desquamation on the surface of your tongue. When you use a cleaner on your tongue, you do more than just help fight bad breath. You break up the tissue on the tongue, which helps to avoid hairy tongue. You also remove bacteria that can contribute to tooth decay. Poor oral hygiene has been linked to a variety of health issues, and this includes cleaning your tongue.  It controls unwanted bacteria that can contribute to tooth decay. It fights bad breath. Improves your sense of taste. You get a better aesthetic when smiling or laughing. They will be able to answer your questions thoroughly. Don't just passively sit there during your dental appointments, ask questions when you get a chance. There is no substitute for the expertise of these individuals. Your regular dental health professionals will also be to advise you on questions specific to your health.

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Write a summary of the previous text in Vietnamese:
Kiểm tra lưỡi của mình. Biết cách vệ sinh lưỡi sẽ rất hữu ích cho bạn. Thường xuyên đi khám chuyên viên hoặc bác sĩ nha khoa.