口腔是延续人类生命的第一器官,牙齿是口腔的门户,牙齿美作为人类一美,伴随着社会进步和生活水平的提高,越来越受到人们的重视。自古以来,人们常用“明眸皓齿”、“牙似排玉”、“朱唇玉齿”等来赞美牙齿的美、精、气、神之贯注。然而,古今中外,由于民族、地区、信仰和审美观不同,人们对牙齿美的感受和审美情趣存在着很大差 Oral cavity is the first organ that continues human life. Teeth is the mouth of the mouth. As a human beings, the beauty of tooth is more and more valued by people with the progress of society and the improvement of living standards. Since ancient times, people often use “bright eyes white teeth”, “Tooth like rows of jade”, “lips with jade teeth” and so on to praise the beauty of the teeth, refined, gas, God’s note. However, at all times and in all countries, because of differences in nationalities, regions, beliefs and aesthetics, there is a great difference between people’s feelings about the beauty of the teeth and aesthetic taste