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Glass ionomer sealant

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Using glass ionomer cement as a sealant material

Placing a resin sealant can be difficult on a partially erupted tooth, or with a child whose cooperation is limited. In these situations, a glass ionomer material can be used as a temporary measure, noting that the retention rates of this material are poorer over the long term.

Consider using glass ionomer sealant material:

  • when the child is pre-cooperative, or
  • when resin sealant is indicated but there are concerns about moisture control,75 or
  • on a partially erupted tooth.    

Image showing a partially erupted molar tooth

Image shows a partially erupted lower first permanent molar.

For a child not yet able to tolerate the resin sealant procedure, consider placing glass ionomer sealants with the following 'press finger' technique.

Glass ionomer sealant application

Images illustrating the 'press finger' technique.

  1. Lower first permanent molar to be sealed
  2. Place a small amount of glass ionomer on one finger tip, and petroleum jelly on the adjacent finger
  3. If possible, wipe the tooth surface with a cotton wool roll, firmly apply the finger tip with glass ionomer to the tooth surface to be sealed, keep finger in place for two minutes
  4. Place the second finger in the mouth, and rapidly switch fingers, to allow coverage of glass ionomer with petroleum jelly before moisture contamination - in this example, Fuji Triage™ was used

Note that the placing of fissure sealants is also a treatment option for certain carious lesions, as discussed in Caries management in primary teeth, Caries management in permanent teeth and Dental techniques.