So, the endosteal implant goes directly into the jawbone to hold artificial tooth/teeth via abutments. As for the appearance, they remind one of tiny screws (tapered/cylindrical). The second type, which is not in active usage now, possesses a metal base to be placed under the gum tissue above/on the jawbone. Various materials are applied to design dental implants. The basic price of the dental implant usually depends on the material it is made of. If the idea of wearing metal scares you off, you may try devices made of ceramics and polymers.