DENTAL GRID Notice that in the photograph of the grid in the mouth, the edge of the grid lines up with the corner of the smile. This is another compound Golden Proportion showing that the width of ALL the 8 front teeth together are in the Golden Proportion to the width of the smiling lips. The anterior aesthetic segment, from 1st premolar to 1st premolar, is highlighted against the backdrop of the smiling lips, with two neutral parts laterally between lips and teeth. The white of the 8 front teeth is in the Golden Proportion to the width of the smile.