Dental caries will produce bad breath, because dental caries is due to oral impurity, bacteria combined with food residues acid production after corrosion of the teeth, teeth with cavities, cavities because of inflammatory substances, and is not easy to clean, will emit a foul odor. If you want to get rid of the odor of dental caries, you can only rely on mouthwash or chewing gum, etc., which can only provide temporary relief, but not a complete solution to the problem. To completely solve the problem of bad breath caused by dental caries, you must go to a regular hospital for treatment, use professional tools to remove caries, and fill with compatible materials, after filling, the teeth will not continue to decay, and the teeth suffering from caries are repaired, so there will be no more bad breath caused by dental caries.