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Related Experiment Videos

Compomer materials and secondary caries formation.

J Hicks1, F García-Godoy, M Milano

  • 1Department of Pathology, Texas Children's Hospital and Baylor College of Medicine, Houston 77030-2399, USA. mjhicks@texaschildrenshospital.org

American Journal of Dentistry
|January 5, 2002
PubMed
Summary

Fluoride-releasing compomers, Hytac and Dyract AP, significantly reduced secondary caries formation compared to filled composite (Filtek Z250) in vitro. Compomers demonstrated lower lesion depths and wall lesion frequencies, indicating better caries resistance.

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Area of Science:

  • Restorative Dentistry
  • Cariology
  • Biomaterials Science

Background:

  • Secondary caries remains a primary cause of dental restoration failure.
  • Understanding the anticariogenic potential of restorative materials is crucial for improving long-term clinical outcomes.
  • Compomers, known for their fluoride-releasing capabilities, are investigated as alternatives to conventional composites.

Purpose of the Study:

  • To evaluate and compare the efficacy of fluoride-releasing compomers versus a filled composite in preventing secondary caries formation in vitro.
  • To quantify differences in lesion depth and wall lesion frequency between tested restorative materials.

Main Methods:

  • Human teeth with prepared Class V cavities were restored with either a filled composite (Filtek Z250) or one of two fluoride-releasing compomers (Hytac or Dyract AP).

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  • Restored teeth underwent thermocycling and artificial caries formation.
  • Longitudinal sections were analyzed using polarized light microscopy to determine mean surface lesion depths and wall lesion frequencies.

    • Main Results:

    • The filled composite (Filtek Z250) exhibited significantly greater mean lesion depths and higher wall lesion frequencies in both coronal and root surfaces compared to both compomer groups.
    • Hytac and Dyract AP demonstrated comparable and significantly lower lesion depths and wall lesion frequencies than Filtek Z250.
    • No significant differences were observed between Hytac and Dyract AP in their ability to inhibit caries formation.

    Conclusions:

    • Fluoride-releasing compomers (Hytac and Dyract AP) are more effective in inhibiting in vitro secondary caries formation than the tested filled composite (Filtek Z250).
    • Compomers may offer a clinical advantage in reducing the risk of recurrent caries at the restoration margins.
    • Further clinical studies are warranted to confirm these in vitro findings.