ArticleBMC oral health2025
Effects of different bleaching methods on the color stability, microhardness, and surface roughness of single-shade composites.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07493941 (Effect of Bleaching Regimen With Different Activation Modes on Color Stability, Surface Roughness, Tooth Sensitivity and Patient Satisfaction), which is not on this map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effect of Bleaching Regimen With Different Activation Modes on Color Stability, Surface Roughness, Tooth Sensitivity and Patient Satisfaction
Who cites it
2 citing papers in PubMed.
- Investigation of the effects of mouthwashes on the surface properties of CAD/CAM blocks and 3D-printed resins.BMC oral health · 2026Article
- Assessment of toothbrushing, bleaching pen and bleaching mouthwash in removing stains from tooth structure and single-shade resin composite.Scientific reports · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThis in vitro study aimed to evaluate the effects of different bleaching methods on the color stability, microhardness, and surface roughness of single-shade resin composites.
methodsFour single-shade resin composites (Charisma Diamond One, Vittra APS Unique, Omnichroma, Zenchroma) and one universal-shade resin composite (Essentia Universal) were tested. Two hundred disc-shaped specimens were fabricated and stained in a coffee solution for 12 days After staining, specimens were assigned to four groups: at-home bleaching (10% carbamide peroxide), in-office bleaching (40% hydrogen peroxide), laser-assisted bleaching (Er: YAG), and a non-bleached control. Color (ΔE₀₀), surface roughness (Ra), and Vickers microhardness (VHN) were measured at baseline, after staining, immediately post-bleaching, and at 1-week and 1-month follow-ups.
resultsAll bleaching protocols significantly affected surface properties and color stability (p < 0.05). Laser-assisted bleaching induced the greatest surface roughness increase and microhardness reduction (p < 0.05), while at-home bleaching had the least effect. Essentia Universal showed the highest resistance, whereas Charisma Diamond One and Omnichroma were more prone to discoloration and mechanical changes. Microhardness partially recovered over time (p < 0.05), but color and roughness changes persisted.
conclusionsBoth bleaching protocol and composite type influence the performance of single-shade resin composites. These results may guide clinicians in material selection and treatment planning. Essentia Universal showed superior resistance to bleaching-related changes, while laser-assisted bleaching, although effective for whitening, compromised mechanical and esthetic properties.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.