Dental Calculus Model Periodontal Disease Model Education Demonstration Removable Tooth. Necessary tools for dental teaching and learning. Selected materials to highly restore gumstooth color, calculus morphology. Lightweight and simple, simple but ingenious everywhere, high-quality jaw frame for long-term use. Dental calculus made of special materialscan be used for real cleaning. and can be used fortooth preparation after cleaning. Teeth are not fixed, standard tooth models, can be replaced, reused for a long time. Suitable for the head mold, can be used together, the scene is more real.