Yes - that choice is correct.

Early and continuous use of FLUORIDE can aid in remineralization of this demineralized tooth structure. The minerals are restored to the tooth's crystal structure and tooth destruction will be arrested. When remineralization occurs in the early stages, the white spots will harden and can actually become hypermineralized compared with the surrounding enamel.

It is important for dental clinicians to note that remineralization can only occur when the surface of the white spot lesion is intact. Penetration of a white spot lesion with an explorer creates an irreversible lesion.