Effect of Chitosan Nanoparticle as an Antioxidant Material on Shear Bond Strength of Composite Resin to Enamel after External Bleaching


  • Diatri Nari Ratih Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia https://orcid.org/0000-0001-5584-1403
  • Shintatika Erlagista Former Student of Specialist Study Program of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
  • Tunjung Nugraheni Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia https://orcid.org/0009-0009-6150-5794




Antioxidant, chitosan nanoparticle, external bleaching, shear bond strength


BACKGROUND: If composite resin restoration is required following external bleaching treatment, a waiting period of between 1 and 3 weeks is needed to avoid restoration failure. However, patients usually need faster treatment.

AIM: This study aimed to investigate the effect of chitosan nanoparticles as an antioxidant material on the shear bond strength (SBS) of composite resin restorations to enamel after external bleaching.

METHODS: Thirty premolars were used in this study and randomly assigned into four groups of six samples, Group 1, no bleaching – no antioxidant, Group 2, bleaching – composite restoration, Group 3, bleaching – waiting 2 weeks – composite restoration, Group 4, bleaching – sodium ascorbate – composite restoration, Group 5, bleaching – chitosan nanoparticles – composite restoration. The SBS was tested with a universal testing machine. One-way analysis of variance and the Turkey’s test were used for statistical data analysis (p < 0.05).

RESULTS: The group that applied chitosan nanoparticles to the teeth previously bleached and then restored with composite resin resulted in similar SBS as the other groups (p > 0.05), except for the group that was bleached and directly restored with composite resin (p = 0.000).

CONCLUSION: The chitosan nanoparticle has the potential as an antioxidant material since it produces similar SBS to composite resin restorations on enamel after external bleaching than the other groups.


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Author Biography

Tunjung Nugraheni, Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia

Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia.


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How to Cite

Ratih DN, Erlagista S, Nugraheni T. Effect of Chitosan Nanoparticle as an Antioxidant Material on Shear Bond Strength of Composite Resin to Enamel after External Bleaching. Open Access Maced J Med Sci [Internet]. 2024 Apr. 30 [cited 2024 May 26];12:1-6. Available from: https://oamjms.eu/index.php/mjms/article/view/11893



Dental Pathology and Endodontics