Toothbrushing

Toothbrushing is an interaction available in The Sims, The Sims 2: Apartment Life and The Sims 3. You can access it from the medicine cabinet. It affects the Hygiene need. In The Sims 3 it gives the moodlet "Minty Breath". There's also a wish that appears after your sim has eaten an onion, he wants to brush his tooth.