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Related Experiment Video

Updated: Jul 13, 2025

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
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Fluoride release by restorative materials after applying surface coating agents.

Anamika Parashar1, Yogesh Kumar Sharma2, Sumit Kumar3

  • 1Department of Conservative Dentistry and Endodontics, DR. B.R. Ambedkar Institute of Dental Sciences and Hospital, Patna, Bihar, India.

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Summary

This study evaluated fluoride ion emission from glass ionomer cement (GIC) and Zirconomer, with and without surface coatings. Both dental materials demonstrated fluoride release, regardless of protective surface application.

Keywords:
Fluoriderestorative materialssurface coating agents

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Area of Science:

  • Dental Materials Science
  • Biomaterials
  • Fluoride Chemistry

Background:

  • Dental restorative materials are susceptible to damage.
  • Surface covering reagents can protect dental restorative substances.
  • Assessing fluoride emission is crucial for material efficacy.

Purpose of the Study:

  • To compare the fluoride ion emission of conventional glass ionomer cement (GIC) and Zirconomer.
  • To evaluate the effect of surface coatings (petroleum jelly and G-Coat) on fluoride emission.
  • To determine if surface protection influences the fluoride-releasing capabilities of these dental cements.

Main Methods:

  • Two experimental categories were established: Category A for GIC and Category B for Zirconomer.
  • Sixty disc-shaped prototypes (6x2 mm) were prepared for each category.
  • Specimens were divided into three sub-categories (n=20 each): no coating (A1, B1), G-Coat (A2, B2), and petroleum jelly (A3, B3).
  • Fluoride ion emission was measured over time for all groups.

Main Results:

  • Subcategories A1 and A3 showed a continuous decline in fluoride ion emission over time.
  • Subcategory A2 exhibited an initial increase in fluoride emission from day 1 to day 5, followed by a decline.
  • Both GIC and Zirconomer demonstrated fluoride emission in all tested conditions, including those with surface coatings.

Conclusions:

  • Both conventional glass ionomer cement (GIC) and Zirconomer exhibit fluoride ion emission.
  • Surface coatings, including petroleum jelly and G-Coat, do not entirely prevent fluoride release from these materials.
  • The findings suggest that fluoride emission is an inherent property of these dental cements, irrespective of protective surface treatments.