For longevity, durability and additional shine to the teeth, veneers are made using porcelain. The custom made facings are quite thin and are widely used nowadays. They are normally meant to improve the outlook of the teeth and they are fitted steadfast to the natural teeth. Besides their safety, they make the teeth shine brighter. As a replacement of crowns, they are used in cases of chipped, crowded or discolored teeth hence they are an effective way of hiding yellow teeth. The difference between crowns and veneers is that while crowns are placed over the premolars and the molars, the veneers are placed over the upper front teeth.