Fissure sealant is usually a composite resin sealant; it requires a dental professional to apply it for us.

Under what circumstances are fissure sealants needed?

If there are deep fissures on a tooth, dental plaque can easily accumulate in these areas where toothbrush bristles cannot access to and clean these areas.
Animation of the longitudinal section of a tooth  deep and narrow fissures

In order to prevent these teeth from tooth decay, we need to apply fissure sealants to seal these fissures.
Animation of a the longitudinal section of a tooth having the deep and narrow fissures sealed with fissure sealant.

Procedures for applying fissure sealants

  1. First use diluted acid to etch the surface of the tooth so that the sealant can adhere onto the tooth.
    Photograph showing the tooth surface being etched by diluted acid.

  2. Use water to wash away the acid, blow-dry the tooth, and then apply the fissure sealant onto the fissure.
    Photograph showing the application of fissure sealant onto the fissure.

  3. Use curing light (a dental light source) to harden the fissure sealant in the fissure.
    Photograph showing the use of curing light to harden the fissure sealant in the fissure.

Last revision date: 18 January 2012