Quickly explain and secure crown recommendations with the Cracked Cusp Model. Once patients see this flexible rubber model in action, they will both understand and agree to the need for crown treatment. To demonstrate the mechanics of a cracked cusp, just flex the tooth to open the crack. Turn model 180° around to show how a crown will cover and bind the tooth together. A must for educating today's aging baby-boomers with large amalgams and stress-fatigued cusps. Measures 1 3/4"H. Includes polished acrylic display dome.