Teeth vs Tooth
theydiffer.com › difference-between-teeth-and-toothJan 14, 2016 · ‘Teeth’ is tooth’s plural form. This term is usually used in its collective form. For example, you should brush your teeth every day. In this case, you talk about the whole set of teeth and not just one tooth. Tooth, on the other hand, is the singular form of teeth. For example, you may need a filling in a decayed tooth, and not in all the teeth.