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Restorative & Materials · single question

Between conventional glass ionomer (GI) and resin-modified glass ionomer (RMGI), which generally releases more fluoride?

  1. Conventional (traditional) glass ionomer, which generally releases more fluoride than RMGI due to differences in setting reaction and the proportion of glass ionomer component present
  2. Resin-modified glass ionomer, due to its added resin component
  3. Both release identical amounts of fluoride in all formulations
  4. Neither material releases any clinically meaningful fluoride
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Correct answer: A. Conventional (traditional) glass ionomer, which generally releases more fluoride than RMGI due to differences in setting reaction and the proportion of glass ionomer component present

Conventional (traditional) glass ionomer cements generally release more fluoride than resin-modified glass ionomers, largely because the added resin component in RMGI dilutes the proportion of the fluoride-releasing glass ionomer matrix — though both materials provide meaningful, clinically useful fluoride release compared with most other restorative materials.

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