Dental Proportions
The width of the central incisor is in golden proportion
to the width of the lateral incisor (as seen from the
front), which in turn is in golden proportion to the
part of the canine that is visible from the front.
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The dark space between the corners
of the mouth and the outer surface of the canines
during a smile (blue line 1.0) is called negative
space. The negative space is in Golden Proportion
with one half of the width of the upper anterior
segment (blue line 1.618).
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Even though the negative space escapes the attention
of the publice, it cannot be ignored. It creates
a balance between cohesive and segregative forces
in a smile and provides a harmonious relationship
between the smile and other facial features. This
example indicates that some fundamental principles
are more easily perceived than others.
The presence of a lateral negative space gives
depth and mystery to a smile, while its absence
displays exuberance and brilliance paired with
functional disturbances.
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