タイトルまたは説明

Teeth are structures implanted in maxillary bones of vertebrates. They are made to grasp and chew food while adding functionality and aesthetics to the oral cavity. In this way, acrylic resin teeth satisfy the two basic requirements of natural teeth, functionality and aesthetics, when they are totally or partially restored, or as fixed pieces in the case of provisional crowns.
Teeth are classified into two classes: Class I corresponds to front teeth that go from one canine to the other canine; Class II corresponds to both upper and lower teeth that go from the first premolar to the second molar.
Four-layered back teeth may vary according to the type of articulation of their occlusion surfaces, as follows:

Normal Articulation: In normal articulation, the profile analysis of the vertical arc of front teeth shows an inter-vestibular joint line which is perpendicular to the occlusion plane.

Crossed Articulation:  In crossed articulation, the profile shows a protruded jaw. The inter-vestibular joint line forms a relatively small angle in relation to the occlusion plane.