Teeth can not eat, may be related to tooth sensitivity and gingivitis, etc., according to the different causes, symptomatic treatment. 1. Tooth sensitivity: clinically known as dentin hypersensitivity, is a variety of reasons leading to damage to the integrity of the enamel, exposing a variety of dental diseases, the treatment is to use fluoride to deal with dentin hypersensitivity, and then closed dentin tubules. Repeated drug desensitization ineffective filling or artificial crown restorative treatment. 2. Gingivitis: chronic inflammation of the gingival tissues will be manifested as redness, swelling and pain of the gums, teeth may not be able to eat when the performance, the treatment is mainly to remove the cause of the disease, through the scaling technique to completely remove dental plaque, together with local drug therapy. Clinical commonly used 1% hydrogen peroxide or compound chlorhexidine rinse, acute inflammation can be used with antibiotics, such as amoxicillin, metronidazole. Appear teeth eating is not strong, it is recommended to go to the stomatology department to find out the reason, so as not to affect the normal chewing function of the teeth, the above drugs must be used under the guidance of a physician.