Dental caries

Dental caries is a progressive tooth hard tissue damage caused by the combined effect of multiple factors in the oral cavity. It is manifested as inorganic demineralization and decomposition of organic matter. With the development of the course, there is a color change to form a substantial lesion. Evolution. It is characterized by a high incidence and wide distribution. The average prevalence of caries can be around 50%. It is the main common disease in the oral cavity and one of the most common diseases in humans. The World Health Organization has listed it with cancer and cardiovascular diseases as the three major human diseases.