The symptoms of eating sweet toothache may be related to the exposure of dentin and dental nerve, which are more sensitive to acid, sweet, cold and heat, etc. Eating sweet may trigger toothache. Common causes of this situation are improper brushing, dental caries, periodontitis, pulpitis, etc. 1, improper brushing: If you brush your teeth horizontally for a long time and with greater force, it may lead to enamel destruction and wedge-shaped defects, resulting in dentin exposure. You can improve the way you brush your teeth by brushing in the up-and-down direction, which can better clean your teeth and avoid damage. You can also choose anti-sensitive toothpaste to improve the symptoms, according to the specific situation, you can also carry out desensitization restoration, porcelain crown and other ways of treatment in the regular hospital if necessary; 2, dental caries: also known as the old people’s cavity, worm teeth, generally diagnosed, should be timely fillings to avoid the aggravation of symptoms. Caries is mainly divided into shallow caries, medium caries and deep caries, which mainly manifests as brown-black caries and cavity, which can lead to dentin exposure or lesion, thus causing the symptom of sweet toothache. If the caries is superficial or medium caries, the restoration of the tooth is usually sufficient. If it is deep caries and there is obvious excitation pain, it is necessary to carry out soothing treatment first and carry out cushion restoration after the pain is relieved, if there is no obvious pain or excitation pain, it is enough to carry out cushion restoration directly; 3, periodontitis: it mainly includes chronic periodontitis, invasive periodontitis, periodontitis reflecting systemic disease, etc. The main symptoms are bad breath, gum bleeding, periodontal pocket, loose teeth, etc. And due to the appearance of gum recession and The phenomenon of alveolar bone resorption can lead to partial root exposure, triggering the symptoms of eating sweet toothache. The specific symptoms can be treated with supragingival scaling, subgingival scaling, iodophenol liquid cautery periodontal pockets, periodontal surgery, etc. If there is an abscess, it should be incised and drained, and with the application of metronidazole, tinidazole and other antibacterial drugs for comprehensive treatment; 4, pulpitis: mainly divided into acute pulpitis and chronic pulpitis, the symptoms of sweet tooth pain, usually indicates that suffering from chronic pulpitis, due to The presence of infection in the dental pulp can lead to eating accompanied by pain or bleeding and other phenomena. It is recommended that such patients undergo root canal treatment in a timely manner to remove the infection in the pulp cavity and to preserve the affected tooth as much as possible after filling.