About the larger than life-size Axis Scientific Decayed Teeth Comparison Anatomy Model: This educational model shows two enlarged cross sections; one healthy molar and one decaying molar. The healthy displays intact enamel healthy dentin and healthy pulp. The decaying tooth shows compromised enamel and dentin the decay continues its path into the pulp of the tooth. This model is perfect for comparing the internal structures of the tooth as well as the outside including the gum line. What is Included? One model with no removable parts the following structures are visible on the healthy tooth and the decaying tooth: Enamel Dentin Pulp Cementum Gingiva Periodontal ligament Blood vessels Bone What we love about this tooth comparison model: Enlarged larger than life-size model enables you to see the structures of the tooth in more detail. Easily compare a healthy tooth versus a decaying tooth by flipping the model to the other side. Discernable areas of decay shown in black on the model. Product Specifications: The model measures 3 in. x 2 in. x 3.3 in. The model weighs 0.88 lbs.