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Smile design is to find the ideal smile for the person by applying medicine and art together. It is to plan a healthy smile by combining the personal wishes of the person with health and naturalness.
Factors that determine the aesthetic smile expression that suits the person:
First of all, it is determined which geometric shape the face line fits into the smile design. The lines on the patient's face hide clues as to which form the tooth should be preferred.
Criteria for Smile Design
In an ideal smile, the line passing through the pupils and the line passing through the middle of the teeth are usually parallel to each other.
Symmetry is very important as the inconsistency in the shape and size of the anterior incisors is easily noticed. For this reason, achieving symmetry as much as the facial features allow adds a noticeable charm to the smile.
The curve drawn to join the incisors of the front teeth should match the curvature of the lower lip. The more harmony in these lines is achieved, the more youthful and attractive the person will have a smile.
The gingival line that emerges and appears during smiling should be parallel to the upper lip line. The gum line is like the frame surrounding a beautiful painting. It adds meaning to the smile, it is very important at what rate it appears. If it looks too much, it can make the person look old, even if it looks less, it will cause an artificial smile on the person.
In order to provide an aesthetic smile, it should be ensured that the teeth on the back appear in certain proportions within the smile line. If this does not happen, the dark areas in the corners of the mouth will not show a good appearance.
The regions called embrashurs can be defined as natural and triangular spaces between the tips of the teeth. For an aesthetic and ideal smile, the volumes of the embrasures should increase from the anterior teeth to the posterior teeth.
The width and height of the upper incisors in the visible parts should be 1/16th of the width and height of the face. In addition, there is the ratio known as the number of phi (φ=1.618...) among some geometric forms in nature. For an aesthetic smile, the teeth should also be aligned according to this rule. For example, the ratio between the widths of the anterior incisors and the lateral incisors (1.618/1=1.618... =phi number), the ratio between the widths of the canines and the lateral incisors (0.618/1 = 0.618, which is obtained from the division of the phi number by one). equal to the result or the number to be obtained by subtracting 1 from the number of phi. 1/phi = phi-1)
The ratios of the widths to the heights of the front two teeth should again proceed from the golden ratio rule, namely 0.618/1 = 0.618, which is equal to the result obtained by dividing 1 by the number of phi. The apparent volume of the tooth should always be greater than its width.
Teeth are not a single color. A natural tooth is never just pure white. The color and transparency of the tooth differs according to the regions. If we evaluate the body of a tooth in three regions: