Tartar odor may be caused by physiological factors, but also may be caused by dental caries, pulpitis, gastric ulcers and other diseases. 1. Physiological factors: if you do not pay attention to oral hygiene, do not pay attention to brush your teeth after eating, so that food residues left behind can appear tartar stinks. 2. Dental caries: If you eat food containing more sugar, it may make the sugar stay in the hidden parts of the teeth, and the phenomenon of tartar stinks. 3. Pulpitis: it is a more common disease in stomatology, often caused by bacterial infection, mainly manifested as tooth pain, mostly paroxysmal pain or pain at night, which may be accompanied by tartar odor, tooth loosening and other symptoms. 4. Gastric ulcer: mainly caused by Helicobacter pylori infection, can appear stomach discomfort, pain, bloating and other symptoms, can be accompanied by tartar odor phenomenon. Tartar stink if the symptoms continue to be unrelieved, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to take treatment, to avoid delaying the condition.