The majority of patients who complain of toothache and itchy teeth clinically are suffering from periodontitis, and many patients with periodontitis will feel periodontal discomfort and itchy teeth, while the cervical part of the teeth is exposed due to loss of attachment and gum atrophy, at which time the dentin exposure will cause painful hot and cold stimulation and toothache. The best treatment for this situation is to go to a professional dentistry for periodontal system treatment, generally to periodontal scaling, also known as supragingival scaling, after the supragingival scaling for periodontitis also need to be supplemented with subgingival scaling, joint root surface leveling method to remove all the plaque and tartar from the periodontal period.