Your teeth may look and feel healthy but a closer look would probably reveal hundreds of microscopic cracks and flaws caused by acid erosion and daily wear and tear. If left untreated, plaque and bacteria can form in these scratches and can eventually lead to more serious damage such as tooth decay and sensitivity.BioRepair"s unique MICROREPAIR microparticles penetrate into the tiny cracks on the surface of your teeth and then bind to the enamel, repairing tooth enamel and preventing decay before it starts. BioRepair repairs teeth without the need for added fluoride and is therefore suitable for the whole family to use.