Biomimetic Dentistry is a new way of dentistry which takes advantages of the natural mineralization processes in the mouth without using harmfully products. Decay is a unbalance of re- and demineralisation leading to a loss of minerals like Calcium and Phosphates. Biomimetic Dentistry aims to reverse this unbalance by offering the lost minerals back to the tooth. Most fillings and sealants placed are made of plastic materials. Dr. Kupietzky uses glass ionomer fillings and sealants which consist of minerals similar to those found in the enamel of teeth.