In addition, it features a number of clinical changes in the enamel surface, ranging from the appearance of thin white lines up to severe structural defects (Thylstrup, 1978; Aplleton, Chestersa, & Kierdorf, 2000). Up to its mildest forms according to TF and Dean's index, the tip of the summit of the cups of the premolars, molars, or incisal border of the anterior teeth present opacities, faint white flecks, spots, or striations (Muñoz, 2012). Thereby, fluorosis compromises overall esthetics, which sometimes leads to children to drop out of school due to its psychological impact (Denis, et al, 2013). With the aim of improving dental esthetics, a therapeutic alternative such as a minimal invasive infiltrant resin technique, will be used on 31 patients, ages 10 to 12 years of age with stage 1, 2, and 3 of fluorosis according to the Thylstrup and Fejerskov (TF) scale or Questionable, Very Mild, and Mild according to Dean's Index, will be evaluated using digital photography analysis, during 12 months.