U88  This nonbreakable vinyl model exhibits the full adult complement of teeth.  Three of the teeth have been split open from the crown to root: One is a normal healthy tooth, a second displays advancing decay which has penetrated the enamel of the crown and is attacking the underlying dentin.  In the third case, decay has become so extensive, that the entire interior of the tooth, including the pulp, is diseased.

31 features are number coded and identified in the accompanying 2 page key.