Full-sized, hinged jaw is clear cast to allow viewing of roots. Healthy side shows normal dentition and occlusion, affected side shows multiple pathologies. Comparison is further illustrated on the included 2-sided card. Upper jaw pathologies: super eruption, apical alveolar abscess with caries, periodontal disease, lateral abscess, abfraction, irregular root curvature, impacted canine, erosion, and fractured tooth. Lower jaw pathologies: horizontal impact, radicular pulpitis, root canal with crown, internal resorption, attrition, external resorption of root, implants, and fractured root.Model size: 2-4/5" x 2-1/2" x 2-1/2"; card size: 6-1/2" x 5-1/4"