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