Both sexes constantly bathe themselves in the river at least once a day, a practice which, in this hot country, is equally necessary both to personal delicacy and health. The teeth of these people also, whatever they may suffer in their colour by chewing beetle, are an object of great attention: the ends of them, both in the upper and under jaw, are rubbed with a kind of whetstone, by a very troublesome and painful operation, till they are perfectly even and flat, so that they cannot lose less than half a line in their length. A deep grove is then made cross the teeth of the upper jaw, parallel with the gums, and in the middle between them and the extremity of the teeth; the depth of this groove is at least equal to one-fourth of the thickness of the teeth, so that it penetrates far beyond what is called the enamel, the least injury to which, according to the dentists of Europe, is fatal; yet among these people, where the practice of thus wounding the enamel is universal, we never saw a rotten tooth; nor is the blackness a stain, but a covering, which may be washed off at pleasure, and the teeth then appear as white as ivory, which however is not an excellence in the estimation of the belles and beaus of these nations.

Voyaging Accounts