Fluoridisation, also known as water fluoridation, is the process of adding fluoride to public water supplies. However, there are other terms that can be used to refer to this practice. These include fluoridation, dental fluorosis prevention, fluorine treatment, fluorine enrichment, and fluoride addition. Regardless of the term used, the aim of fluoridisation is to reduce the incidence of dental caries and tooth decay, making it an important public health measure worldwide. While usage of fluoride in public water supplies remains controversial, many health experts agree that this practice is effective and helps reduce dental issues in the long term.