Periodontal hygiene model diseased teeth gum involved. The Gum opens and close to normal position. Soft Pink Silicone Material Gingivae is sectioned interproximally and through the buccal at the mid line. Gingivae can opens, allowing easy Patient Demonstration Periodontal Disease or During Students discussions. One Side Demonstrating: The Teeth included on the normal side are: securely held in place and are not removable. Normal healthy bone & tissue. The Other Side Demonstrating: Periodontal Disease Affected Areas with Calculus Deposits, Bone Loss. On the Periodontal affected side, the teeth are anatomically rooted and are held in place with adhesive to demonstrate mobility. Can be ordered: with Bench or Chair Mount or Without Mount. Optional: Oral Cavity Cover & Water Drainage System. Excellent Model for Dental Schools Education, Doctors Office Patient Demonstrations.