tartar
US /ˈtɑːr.t̬ɚ/
UK /ˈtɑːr.t̬ɚ/

1.
tartaro
a hard calcified deposit that forms on the teeth and contributes to their decay
:
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Regular brushing helps prevent the buildup of tartar.
Spazzolare regolarmente aiuta a prevenire l'accumulo di tartaro.
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The dentist removed the tartar from my teeth during the cleaning.
Il dentista ha rimosso il tartaro dai miei denti durante la pulizia.