Features: Dental study model periodontal disease model for doctor-patient communication and dental teaching materials. Made of premium-quality PVC material, environmentally friendly, no harmful substances and odors, bright colors,easy to use. Mainly shows decayed tooth tartar,pulp calculus,occlusal abrasio and different pathological cases to the patients. Realistic model helps to know of the type and structure of adult's teeth easily and easy communication and understanding. Application: Great choice for dentist studying, teaching, researching and dental lab using. Specifications: Material: PVC Size: Approx. 55x45x105mm/2.17x1.77x4.13 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Pathology Tooth Model