The formation of dental calculus is mainly related to the deposition of various types of inorganic salts, the composition of which mainly includes plaque and tartar deposits, usually do not pay attention to oral hygiene, oral injuries and infections, and other factors can increase the risk of the onset of the disease. Dental calculus refers to the calcification process or has been calcified plaque and soft scale deposits on the surface of the teeth. Among them, plaque is mostly formed when oral hygiene is not good, by the decomposition of bacteria and food and the formation of substances, if not removed in a timely manner, it can continue to accumulate, calcification, and ultimately the formation of dental calculus. Tartar deposits can be formed by a variety of reasons, such as saliva in the oral cavity under the action of bacteria, prompting the decomposition of protein substances, resulting in calcium salt deposits; degradation of cellular phosphate enzymes to promote the hydrolysis of organic phosphorus, thus generating phosphorus precipitation accumulation on the surface of the teeth; saliva in the lower concentration of CO2, prompting the deposition of calcium salts in the surface of the teeth and so on. Dental calculus not only affects the aesthetic appearance, but also induces gum swelling, bleeding, and is also an important factor in the occurrence and development of periodontal disease, and in severe cases, it can even lead to the complete destruction of periodontal tissues, so it is recommended that the patient seek medical treatment in a timely manner.