Definition of Pit and Fissure and Sealents: A material that is introduced into the occlusal pit and fissure of caries susceptible teeth, thus forming a micromechanically–bonded, protective layer cutting access of caries producing bacteria from their source of nutrients.
History and Evolution of Pit and Fissure Sealents
1922– “PROPHYLACTIC ODONTOTOMY”-HYATT
1939– Gore – use of polymers- sol. of cellulose nitrate
1955– Buonocore – use of concentrated phosphoric acid solution
Gwinnett and Buonocore- used 50% H3PO4 produced porosity strong bond.
Cueto and Buonocore- used methyl cyanoacrylate monomer filled with silicate filler- polymerization of cyanoacrylate and releasing fluorides
1965– FIRST PAPER on pit and fissure published (Cueto and Buonocore)
1968– Roydhouse – used BIS-GMA monomer using methymethacrylate as diluent with peroxide amine polymerization system
1976– first colored sealant- CONCISE WHITE SEALANT (3M dental products)
1984– Burt reported- “first and second molars should be sealed as soon as possible after eruption because of their susceptibility to occlusal caries”
1989– Eccles noted- “fissure sealant should be used preventively for caries prone patient, and
therapeutically for suspect or early carious lesion
Wilson used zinc phosphate as Pit an Fissure Sealent
Kline and Knutson- use of ammoniacal silver nitrate