Here's a Latin poem about Thais, undoubtedly not the Thais under discussion here, that I learned many decades ago:

Thais habet nigros, niveos Laecania dentes.
Quae ratio est? Emptos haec habet, illa suos.

In translation,

Thais has black teeth, Laecania has snowy white teeth.
What is the reason? This woman has bought teeth, that woman has her own.

By the Roman poet, Martial.