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Post-operative bleaching: effect on microleakage.

G A Crim1

  • 1School of Dentistry, University of Louisville.

American Journal of Dentistry
|April 1, 1992
PubMed
Summary
This summary is machine-generated.

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Carbamide peroxide bleaching gel negatively impacts the marginal seal of resin composite restorations. This dental material can compromise the integrity of Class V restorations, increasing microleakage risk.

Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Biomaterials

Background:

  • Dental bleaching agents are widely used for aesthetic improvement.
  • The potential impact of bleaching on the longevity of dental restorations remains a concern.
  • Understanding the interaction between bleaching agents and restorative materials is crucial for clinical practice.

Purpose of the Study:

  • To evaluate the effect of carbamide peroxide bleaching gel on the microleakage of Class V resin composite restorations.
  • To compare the microleakage of restorations bonded with two different dentin bonding agents after bleaching treatment.

Main Methods:

  • Extracted human teeth with Class V preparations were restored using two different dentin bonding systems.
  • Teeth were divided into control and experimental groups, with the experimental group exposed to carbamide peroxide gel.

Related Experiment Videos

  • Microleakage was assessed using dye penetration after thermal cycling.

    • Main Results:

    • Carbamide peroxide bleaching gel significantly increased microleakage in Class V resin composite restorations.
    • Both tested dentin bonding agents showed compromised marginal seal after bleaching exposure.
    • The bleaching agent adversely affected the marginal integrity of the restorations.

    Conclusions:

    • Carbamide peroxide bleaching agents can negatively affect the marginal seal of resin composite restorations.
    • Clinicians should consider the potential for increased microleakage when performing bleaching procedures on teeth with existing restorations.
    • Further research is warranted to explore protective strategies for restorations during dental bleaching.