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