Yes, the biggest benefit is when the tooth is forming. It's like boro-silicate glass (pyrex) or steel; some atoms in the crystalline structure of the base mater

Yes, the biggest benefit is when the tooth is forming. It's like boro-silicate glass (pyrex) or steel; some atoms in the crystalline structure of the base material are replaced with others, which improves the overall strength of the result. So, like boron improves glass and carbon improves iron (to make steel) then fluoride improves the tooth structure.