The present invention relates in general to a sweet. More specifically, the present invention relates to a sweet which provides beneficial effects on the teeth. The sweet according to the present invention promotes good oro-dental hygiene, and more particularly provides oro-dental care, and promotes and maintains healthy teeth and gums. It is characterized in that it contains microalgae and/or extracts of microalgae, and more particularly Chlorella and/or extracts of Chlorella. Finally, the present invention also relates to the use of a sweet, preferably a sugar-free sweet, containing Chlorella for promoting and maintaining good oro-dental health.