This item is a combination of 50 Maxillary and Mandibular Premolars. All tooth are first class quality without any stains, calculus, debris, attrition or cavities. It is a great educational tool for dental students, medical society and can be used for holloween stuffs. It is also very useful for research involving extracted teeth, dental lab technicians, science fair projects. You can buy human teeth online from our website. All tooth are properly cleaned either with formalin or hydrogen peroxide. All teeth are stored in saline till we ship so teeth wont dryout. We usually autoclave all teeth for sterilization purpose so you can buy with confidence. They will be packed with at most care. We ship this item WORLDWIDE.