The dental enamel demineralization phenomena by acids produce a tissue deterioration that expressed as erosion or caries lesions. These are not nutritional diseases, but related to diet and its chemical effects on teeth. Erosion is the result of cumulative exposure to acids in times greater than 30 minutes. Dental enamel consists of prisms that described as cylindrical rods, surrounded by sheaths and formed by a packing of hydroxyapatite crystals. Crystals with different angulation converge in the sheath, being an area that contains more enamel proteins than other regions. Mineralization of dental enamel decrease from external surface to dentine junction.