微笑是人类共同的语言。和谐自然，怡人的微笑是人体美学的重要部分。在人际交往中它能给人留下良好的最初印象，因而增加了个体在社会中被接受的机会。作为最重要的面部表情，微笑是表达友好、赞同和欣赏的基本方式。国际知名正畸专家，挪威奥斯陆大学的Dr．Bjorn．VZachrisso Smile is the common language of mankind. Harmony and natural, pleasant smile is an important part of human aesthetics. It gives a good initial impression of interpersonal communication and thus increases the chances that an individual will be accepted in society. As the most important facial expression, smiling is the basic way to express friendship, approval and appreciation. Internationally renowned orthodontic expert, Dr. Oslo University of Norway Bjorn. VZachrisso