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龋齿是人类一种发病率很高的疾病。从整个世界范围内展望,龋齿有急剧增长的倾向,据统计,我国儿童龋齿发病率高达70—80％,成年人,老年人亦常常患此病。龋齿不仅毁坏牙齿,而且还可以引起牙髓感染,增加病人的痛苦,甚者又可造成口腔颌面部的感染,严重地影响人民的健康。儿童乳牙患龋病不仅影响咀嚼功能和颌骨的发育,而且又能引起恒牙列不整齐,恒牙发育不良,影响少年儿童的生长发育。因此,长期以来,研究龋齿的发病因素、发展规律及有效
Dental caries is a highly morbid disease in humans. From the perspective of the whole world, dental caries have a tendency of rapid growth. According to statistics, the incidence of dental caries in children in our country is as high as 70-80%. Adults and the elderly often also suffer from this disease. Dental caries not only destroy the teeth, but also can cause pulp infection, increase the patient’s pain, worse it can cause oral and maxillofacial infection, seriously affecting people’s health. Dental decay in children with dental caries not only affects the development of chewing function and jaw, but also can cause irregular dentition, permanent teeth dysplasia, affecting the growth and development of children. Therefore, for a long time, the study of the incidence of dental caries, the development of laws and effective