A flashing set of healthy and clean, regular 'pearly whites' was a rare sight in Victorian society, the preserve of the super-rich (and even then, dental hygiene was not guaranteed).

在维多利亚时代，一副闪闪发亮的健康、干净、整齐的“珍珠白”牙齿是非常罕见的，只有超级富豪才能拥有（即便如此，在那个时代，口腔卫生无法得到保证）。

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Oral health begins with clean teeth. Consider these brushing basics from the American Dental association.

口腔健康源自洁净的牙齿。

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We can use nylon dental floss to clean our teeth after three meals.

三餐之后我们可以使用尼龙牙线来清理我们的牙齿。

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"The (dental) office was clean, " Baylor said.

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Scotland's chief dental officer, Margie Taylor, urged parents to teach children the importance of keeping their teeth clean and to restrict sweets to meal times as much as possible.

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"All the pipes look shiny clean, no crud, " Mr. Cassidy said as he used a long, dental-like mirror to peer into tight, deep openings.

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