In Vitro Efficacy of Listerine Whitening Mouthwash for Color Recovery of Two Discolored Composite Resins

  • Haleh Kazemi Yazdi Islamic Azad University,Tehran Dental branch
  • Negin Nasoohi Islamic Azad University,Tehran Dental branch
  • Mahla Benvidi Islamic Azad University,Tehran Dental branch

Abstract


Abstract

Objectives: Color stability of composite resins plays an important role in their longevity and clinical service. Considering the increasing use of composite resins and their discoloration over time, this study aimed to assess the efficacy of Listerine whitening mouthwash for color recovery of two discolored composite resins.

Materials and Methods: This in vitro experimental study was performed on 20 samples fabricated of Filtek Z350XT and IPS Empress Direct composite resins. Primary colorimetry was performed using a spectrophotometer. The samples were immersed in coffee drink for 7 days. They were then immersed in Listerine mouthwash for 4 minutes daily for 56 days. The color change of composite resins was evaluated again . Data were analyzed using ANOVA and t-test.

Results: The primary color change of Z350XT after immersion in coffee was 1.6 times that of IPS composite (P<0.0001). The color recovery of IPS and Z350 XT was 1.06±0.58 (P<0.01) and 2.58±1.65 (P<0.001) units, respectively after immersion in mouthwash. The color change of Z350XT after exposure to mouthwash was 25% (1.4 times) greater than that of IPS (P<0.01).

Conclusion: Both composite resins experienced clinically unacceptable discoloration after exposure to coffee (∆E>3.3). Filtek Z350XT showed greater color change than IPS. Use of Listerine whitening mouthwash caused significant color recovery in both composite resins.

Keywords: Listerine Whitening Mouthwash; Color Recovery; Discoloration; Composite Resins; Coffee; Spectrophotometry

Author Biographies

Haleh Kazemi Yazdi, Islamic Azad University,Tehran Dental branch

Assistant professor ,Department of Operative dentistry, Islamic Azad  University of Medical science-Dental branch,Tehran,Iran

Negin Nasoohi, Islamic Azad University,Tehran Dental branch
Assistant professor ,Department of Operative dentistry, Islamic Azad  University of Medical science-Dental branch,Tehran,Iran

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Published
2019-01-30
How to Cite
1.
Kazemi Yazdi H, Nasoohi N, Benvidi M. In Vitro Efficacy of Listerine Whitening Mouthwash for Color Recovery of Two Discolored Composite Resins. Front Dent. :Uncorrected Proof.
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Original Article