人的口腔比身体的其它部分更需注意.它经常不清洁,比身体其它的组织库封器官更常患病餐后食物残渣往往留在口腔内,如果不加清刷,食物残渣就就会腐烂或发酵.食物腐烂的产物对牙齿及其支持结构往往有毒和有害。这是人类最流行的两种疾病龋齿和牙周疾病的主要原因. More attention should be given to the human oral cavity than other parts of the body, which are often unclean and more often than the other organs of the body that seal the organs. Food residues tend to remain in the oral cavity, leaving the food residue without a brush Decayed or fermented Food rotting products are often toxic and harmful to the teeth and their supporting structures. This is the leading cause of both caries and periodontal disease in two of the most prevalent human diseases.