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

  • Haleh Kazemi Yazdi Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran
  • Negin Nasoohi Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran
  • Mahla Benvidi Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran
Keywords: Listerine, Mouthwashes, Colorimetry, Tooth Discoloration, Composite Resins, Coffee, Spectrophotometry

Abstract

Objectives: Color stability of composite resins has a significant role in their durability and clinical service. Considering the increasing use of composite resins and their gradual discoloration, 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 (3M ESPE, St. Paul, MN, USA) and IPS Empress Direct (Ivoclar Vivadent, Schaan, Liechtenstein) composite resins. Primary colorimetry was performed using a spectrophotometer. The samples were immersed in a coffee drink for 7 days. They were then immersed in Listerine mouthwash for 4 minutes daily for 56 days. After this period, the color change of composite resins was reevaluated. Data were analyzed using repeated-measures analysis of variance (ANOVA) and t-test.

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

Conclusion: Both composite resins experienced a 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.

Author Biographies

Haleh Kazemi Yazdi, Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran

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

Negin Nasoohi, Department of Operative Dentistry, Islamic Azad University of Medical Sciences, Dental Branch, Tehran, Iran

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. 16(3):181-186.
Section
Original Article