Interpretation: Fluoride ion is commonly used in drinking water supplies and in toothpaste to prevent tooth decay. The fluoride ions replace hydroxide ions in the enamel mineral hydroxyapatite, forming fluoroapatite. Why does replacing the hydroxide ion with fluoride ion prevent tooth decay has to be explained
Dental materials are used for dental implants and dental fillings. Dental fillings was done by using amalgum or dental composite. The dental composite has a matrix (made from a methacrylate resin) and a silica filler. Dental fillings are done by dental amalgum which is a solution of mercury having many metals in it.
Hydroxyapatite is a naturally occurring mineral which can be found in matix with other minerals as well as in teeth.