牙医师和研究人员提出了完美笑容的黄金比例，从每个牙距离弯曲的尺寸、宽度、牙齿的颜色、形状及微笑是的宽度。
所追求的完美微笑应该隐藏牙床，拒绝漂白牙齿，掩盖最里面的牙齿并且他们的嘴唇要达到合适的角度。“最完美的笑容是每个人梦寐以求的，洁西卡 辛普森是我们所知道的能笑的最完美的人”，Loma Lida 大学的医学院的戴维斯 尼古拉斯博士说。
据报道，要达到最完美笑容颜色很重要，但是现在的牙齿漂白的太严重了。戴维斯博士说：“牙齿的颜色应该和眼睛的白的程度一样，。如果牙齿太白的话，它们会比眼睛占优势。”“有控制完美笑容的精确比例”戴维斯博士说，完美笑容不宽于半张脸，而且要达到最好的效果，还要上下嘴分别位于脸的中线的两侧。
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Dentists and researchers have come up with the formula for the perfect smile, from the size and width of each tooth to the curve, colour and shape of the teeth, and the overall width of the smile.
Those pursuing perfection are advised to hide their gums, hold back on the bleach, cover the bottom teeth and set their lips at just the right angle."Everyone wants the perfect smile and Jessica Simpson is the one we get asked to reproduce the most," says Dr Nicholas Davis of Loma Linda University School of Dentistry.
According to the report, colour is important, and too many are now bleached too white. Dr Davis said： "The teeth should be the same colour as the whites of your eyes. If the teeth are too white, they become more dominant than the eyes."There are strict mathematical ratios governing the ideal smile, says Dr Davis. Its width should be no less than half the of the face at the same height and, for the best effect, both upper and lower lips need to be symmetrical each side of the mid-line of the face. |