Memory Game Healthy Teeth Memory MatchOnline version Dental Hygiene by Elizabeth Lowes Do this at least twice a day Crown Brushing this to stop bad breath Enamel Dentist Nerve Brush Dentin Visit every 6 months Bottom part of tooth that is inside the gum Tongue Cavity Top half of tooth Can cause cavities Hole in tooth Sensitive part of tooth Second layer of your tooth Root Hard outer layer of tooth Sugar