This limescale, by its consistency, favors the accession of bacterial plaque (it provides its own training) and certain colors (coffee, tea, tobacco…). For the maintenance of bacterial plaque, it fosters hence the multiplication of microbes which, according to their categories, may be responsible or cavities or gingivitis and periodontitis. His presence and coloring give an unsightly teeth and therefore smile. Its elimination restores a healthy environment for teeth and gums and enables new smile full of teeth.