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In the past few years, the smile has taken center stage as the ultimate symbol of beauty--more than beautiful eyes, more than great hair, even more than a sexy body. A brilliant smile has become the determinant in describing both beauty and personality. Think about it: You never hear someone say, "She's got such a great smile," when they're describing an aloof or rude woman. Rather, such appraisal evokes admiration and envy. She is someone you'd like to model yourself after.