A standard smile is a smile that can be seen from three meters away. It is a pleasant smile with the corners of the mouth slightly turned up, showing eight/six of your upper teeth. Be careful to keep your teeth clean as a sign of respect.

International smile standards, men require "stand like a pine", stalwart and free; women should be elegant and beautiful, pavilion. Training in line with the norms of etiquette standing posture, is to cultivate the beauty of the starting point, the essentials of its action is also to cultivate the basis of other beautiful manners.

Expanded Information:

Smile Skills:

Smile, look at the center line: If the upper incisors of the middle seam and the middle of the person, the yank of the lip pearl is in the same vertical line, i.e., the center line is aligned, then the teeth neatly. If the center line is aligned, then the teeth are neat.

Clench your teeth and look at the bite: a normal bite is one in which the tips of the upper row of teeth bite into the fossa of the lower row of teeth, and the upper row of teeth covers about one-third of the lower row of teeth.

Looking in the mirror, look at the face: the face is facing the mirror, as shown in the figure will be divided into three parts of the face, not affected by the development of teeth of the normal face, the three parts of the normal situation is for the equal parts.

Baidu Encyclopedia - Standard Smile