Dental Materials, Endodontics, Pedodontics

History and Evolution of Pit and Fissure Sealents

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.

Pit and Fissure Sealents HistoryHistory and Evolution of Pit and Fissure Sealents


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

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