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How To Learn Sign Language

Tooth Anatomy- Oral Health Education in American Sign Language


Now let go inside inside that tiny teeth where all of the amazing things happens The white part of the teeth we can see inside our mouth are called C-R-O-W-N not the crown we wear on our head This is the crown. Below the crown is the root The root is embedded in the bony jaw The bony jaw helps support the tooth The fun starts now I will grab an axe I will split the tooth in half Our teeth are made of four tissues The white, outer, hard layer of the crown is called the enamel The hard, outer layer of the root is the CEMENTUM Underneath the enamel and the cementum, there is dentin. As shown in the picture, the grey color is the dentin Underneath the dentin is the PULP As shown in the picture, the yellow color is the pulp The pulp have blood vessels and nerves inside Around the root and the bone we have a soft tissue called the gingiva. Also known as gums The gingiva helps support and protect the root and the bone Our teeth have many different anatomy First, we have the incisors They are your four upper front and four lower front. 8 total We have different types of incisors, central and lateral. We have four central incisors, 2 on the top and 2 on the bottom two on the top and two on the bottom We have four lateral incisors, two on the top and two on bottom These incisors are shaped like a chisel Their function is to help to cut and chop down the food Rabbit have 2 big incisors aka buck teeth They can chop down hard food such as carrots Next, we have the canines two canines on the upper and two on the lower Canines are pointy and sharp and it allows us to tear down tough food. Lions also have sharp and long canines They will hunt for other preys and use their canines to tear down the meat Next, we have the premolars We have 4 on the upper and 4 on the lower, 2 on each side. Total of 8! Their function is to crush down the food Next, we have the molars We have 6 on the upper and 6 on the lower. 3 on each side. Total of 12! Their function is to grind down the food for digestion

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