Fluorine is a chemical element, it plays a very important role in the oral cavity, bone formation in the first years of life, and it is a fundamental part in the appearance of enamel crystals. It works in the demineralization and re-mineralization processes that occur in the oral cavity, these are found in different types of food that are consumed every day, their main source of consumption is drinking water, fluorinated supplements, formula milk, toothpaste, Oral gum should be consumed with measure in its application for a good dental brushing since excess fluoride can cause a pathology called dental fluorosis, which is why the supervision of adults is recommended at the time of oral hygiene in children. The objective of this literature review is to sensitize parents and health professionals about application protocols and their appropriate use of fluorine compounds, helping to preven...