What is the difference between sealants and PRR’s (preventive resin restoration?)

Dentists place sealants only on healthy teeth which are likely to become decayed in the future – most frequently hard to reach molars with naturally deep anatomy. PRR’s are minimally invasive fillings placed when very early cavities infiltrate the grooves of the chewing surfaces – but only on teeth already affected with the germ- laden decay process.

Most dentists would prefer to protect the natural enamel of the tooth structure BEFORE it begins to decay using sealants and fluoride.