Toothbrushing

Toothbrushing is an interaction available in The Sims, The Sims 2 and The Sims 3. You can access it from the medicine cabinet in the Sims 1. It barely affects the Hygeine need. In The Sims 2 it comes with Apartment Life and is in the base game in The Sims 3. It is a small detail and isn't required or need-threatining.