无论年龄大小，良好的口腔卫生和定期的牙齿保健都非常重要。
Good oral hygiene and regular dental care are important, whatever your age.
维多利亚时代流传着一则箴言：“造物主赋予人类嘴唇以遮掩牙齿”。这暗示了在严格意义上的牙科学诞生之前，口腔的卫生状况往往非常糟糕。
"Nature gave us lips to conceal our teeth," ran one popular Victorian maxim, alluding to the fact that before the birth of proper dentistry, mouths were often in a shocking state of hygiene.
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）。
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).
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