Alumni include a dental hygienist, a rabbinical student and someone who works at the World Bank.

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That combination of attributes is what puts dental hygienist in the number one slot.

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Now back in London, the dental hygienist had been half-way through a six-week trip, intending to go on to China.

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She had worked as a dental hygienist and was known to be obsessively attentive to her teeth, getting them cleaned every 30 days.

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Cindy Levering, a retired consulting actuary, was chatting with her dental hygienist recently about how being conscientious (i.e. flossing your teeth daily) adds to your life expectancy.

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Kevin: No, I think the digital hygienist struck again.

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He was so calm and behaved that the hygienist gave him a couple stickers on the way out the door (needless to say, this landed him in his room for a multi-hour timeout).

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