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