The researchers delivered short electrical pulses to either the upper left canine tooth (the pointy one) or the lower left canine tooth in the subjects.

科研人员给上颚的左犬齿（比较尖的那颗）或者是下颚的左犬齿注射一个短的电脉冲。

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Among his first efforts in this area was "Tommy Tucker's Tooth" (1922), a short combining live action and animation made on assignment for a local dentist.

他在这个领域的第一个成就是“汤米·塔克的牙”(1922)，一部结合了生动动作和动画，描述给当地医生任务的短剧。

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A little pain, short course fashion beauty tooth method.

一种痛苦小、疗程短的时尚美牙方法。

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Part of the success, he says, came from a situation where a British businesswoman, traveling in New York for a short stint, sent out a Twitter message asking for dental help because her tooth had cracked.

WSJ: On a Tight Budget? How to Land a Client

His hair is short in length and is grey on the sides, while his front-left tooth has a chip in it.

BBC: Owain Roberts