ArticleInternational dental journal2025
The Efficacy of 3 Bleaching Methods on Stained Polymer-Based CAD/CAM Materials.
Article in International dental journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Effect of Successive Bleaching Treatments Followed by Staining on Color, Whiteness, and Translucency of Polymer-Based CAD-CAM Materials.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2026Article
- Color stability of polyetheretherketone and graphene-reinforced polymethyl methacrylate after in-office bleaching.BMC oral health · 2026Article
- Impact of Various Mouthwashes on the Color Stability of Hybrid Ceramic and Reinforced Composite CAD/CAM Restorative Materials: An In Vitro Study.Materials (Basel, Switzerland) · 2026Article
- Comparative evaluation of different bleaching agents on the color stability, hardness and surface roughness of indirect esthetic restorative materials with different manufacturing methods.BMC oral health · 2025Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
INTRODUCTION AND
aimsThis study aimed to investigate the efficacy of 3 bleaching methods on stained polymer-based CAD/CAM blocks in terms of surface roughness, hardness stability, discolouration reduction and susceptibility to re-staining following bleaching.
methodsTwo-mm-thick slabs (N = 128) were prepared from CeraSmart (CS), Grandio Blocs (GB), Vita Enamic (VE), and direct resin composite GrandioSO (RC). Coffee-stained specimens (n = 8) were subdivided into bleaching (BL) groups: in-office bleaching (OB), home bleaching (HB), whitening mouthwash (MW), and a control group with 14-day storage in water (CL). Measurements of roughness (Ra), Vickers hardness (HV), and colour parameters (ΔE
resultsHB was more effective in whitening in terms of achieving minimal residual colour (-0.87 to 0.7) and greater resistance to re-staining (0.41 to 0.89). MW resulted in an increased lightness (ΔL*) of all materials (1.96 - 2.30). However, MW increased the roughness of VE (0.8 µm) and RC (0.4 µm), compared to their baseline measurements (0.057 µm and 0.087 µm, respectively, p = 0.003). All the BL treatments resulted in a greater hardness reduction (14.4% to 18.1%) in the RC than in the other materials.
conclusionThe investigated polymer-based materials and modes of bleaching treatment influenced the bleaching efficacy. For CAD/CAM blocks, in-office bleaching and whitening mouthwash reduced the discolouration but adversely affected their roughness and hardness compared to home bleaching. Home bleaching proved to be the least susceptible to re-staining. CLINICAL RELEVANCE: Knowing how a specific bleaching product affects the colour, roughness and hardness and consequent susceptibility to staining of 4 studied polymer-based materials that represent pre-existing restorations would impact the consideration of bleaching treatment.
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