The application of glass ionomer sealants to occlusal surfaces of the posterior teeth, reduce dental caries in comparison to not using sealants at all.[7] There is evidence that when using sealants, only 6% of people develop tooth decay over a 2-year period, in comparison to 40% of people when not using a sealant.[7] However, it is recommended that the use of fluoride varnish alongside glass ionomer sealants should be applied in practice to further reduce the risk of secondary dental caries.[8]