Natural collagen for use in dentistry; biological preparations for human medical purposes for the treatment of diseases related to bones and tissues and prevention of such diseases; chemical for the treatment and prevention of diseases related to bones and tissues.

Bone implants composed of natural materials; implants consisting of artificial natural materials in the nature of artificial tissues, bone and joint prostheses; surgical kits comprised of surgical instruments and apparatus for applying and connecting artificial and natural tissue and artificial and natural bone material to natural tissue and natural bones; native collagen membrane made of porcine dermis; collagen membranes.