Baking soda, chemically known as sodium bicarbonate, usually does not remove black plaque. 1. Black plaque is associated with medication, bacterial infection, and lack of oral hygiene. Sodium bicarbonate does not usually remove black plaque because it does not clean the teeth. If patients do not use sodium bicarbonate correctly, it is easy to cause irritation to the oral mucosa, which increases the risk of oral diseases and is not conducive to the health of the body. 2. For some black plaque, mainly due to caries, gingivitis, etc., the patient needs to cooperate with the doctor to use medication or surgical treatment, so the use of sodium bicarbonate can not remove black plaque. Sodium bicarbonate, as a pharmaceutical raw material, can be used to treat hyperacidity, metabolic acidosis and so on. It is recommended that people with black dental plaque should consult a doctor for examination, and follow the doctor’s instructions for treatment after clarifying the cause of the disease. Pay attention to daily oral care, brush your teeth and rinse your mouth in time after meals.