The manifestation of dental calcification, on the one hand, is physiological, referring to the remineralization of demineralized tooth tissue, on the other hand, is pathological, that is, the calcification of plaque to form dental calculus, and so on. 1. Physiological: when the teeth due to poor oral hygiene or like to eat acidic foods, carbonated beverages, will lead to demineralization of the teeth, manifested in the chalky surface of the teeth, the opposite is the remineralization of the teeth (calcification), i.e., when the dietary habits to improve, by the saliva within the mineral remineralization of the demineralized teeth, or the use of remineralization solution to make it remineralized, can repair the demineralized areas. 2. Pathological: When the plaque on the surface of the teeth is not cleaned in time, it will lead to calcification of plaque in the saliva environment, forming more difficult to clean the calculus, the accumulation of calculus on the surface of the teeth will stimulate the gums and other periodontal tissues, and at the same time provide a better place for bacterial reproduction, which is easy to cause periodontitis. It is recommended that patients with abnormal calcification of dental calculus and other abnormalities go to the hospital stomatology department for diagnosis and treatment by a professional physician, and undergo treatment such as dental cleaning.