ArticleClinical oral investigations2022
Characterization and effectiveness of a violet LED light for in-office whitening.
Article in Clinical oral investigations, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- Comparative efficacy of violet light, bleaching gel, or their combination, in in-office bleaching: a systematic review and network meta-analysis.Brazilian oral research · 2026Pooled it
- Bleaching with biocatalysts and violet LED: a randomized clinical trial using a hybrid design with parallel-group and split-mouth approaches : Violet LED and biocatalysts in in-office whitening: a split-mouth trial.Clinical oral investigations · 2025Trial
- Bleaching efficacy and tooth sensitivity using violet LED - single-blind randomized controlled trial.Lasers in medical science · 2025Trial
- Clinical comparison of whitening efficacy and tooth sensitivity of different concentrations of hydrogen peroxide photoactivated with violet or blue LEDs.Lasers in medical science · 2024Trial
- Article
- In situ evaluation of the bleaching efficacy of experimental hydrogen peroxide hydrogel with MnO-doped Biosilicate activated by violet LED light.European journal of oral sciences · 2026Article
- Effect of violet and blue light activation on in-office bleaching with 6% hydrogen peroxide: color change, penetration into the pulp chamber and bleaching gel stability.Lasers in medical science · 2026Article
- Effects of phthalimidoperoxycaproic acid (PAP+) associated or not with LED irradiation as a bleaching agent: an in vitro study.Lasers in medical science · 2026Article
- Reactivation capacity of TiO2 nanoparticles for dental bleaching: an in vitro study.Brazilian dental journal · 2026Article
- Hyaluronic Acid-Based Bleaching Gels With NF_TiOJournal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2025Article
- In vitro performance of violet LED and argon plasma with oxygen on dentin bleaching.Brazilian dental journal · 2025Article
- Enhanced tooth bleaching with a hydrogen peroxide/titanium dioxide gel.BMC oral health · 2024Article
- Low and high hydrogen peroxide concentrations of in-office dental bleaching associated with violet light: an in vitro study.Clinical oral investigations · 2024Article
- Color stability of enamel treated with different antioxidant agents following at-home bleaching with 10% hydrogen peroxide.Journal of applied oral science : revista FOB · 2024Article
- Effects of experimental bleaching gels containing co-doped titanium dioxide and niobium pentoxide combined with violet light.Clinical oral investigations · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 3 countries.
Funding
Abstract
objectivesThis study characterized a violet LED light (V-LED; bright max whitening) tooth whitening device and evaluated its efficacy on stained enamel compared to hydrogen peroxide (HP). MATERIALS AND
methodsCharacterization of the V-LED beam profile was performed using a laser beam-profiler. The irradiance was measured throughout an exposure cycle at 0- and 8-mm distances using an integrating sphere and a spectral radiometer. Bovine enamel/dentin blocks stained with black tea (BT), cigarette smoke (CS), or without staining (CONT) were subjected to V-LED or 40% HP (n = 10/group). Color parameters (ΔL, Δa, Δb, and ΔE
resultsHeterogeneous beam distribution was observed for the emitting V-LED chips. After 20 sequential exposures, irradiance levels were reduced 25-50%, regardless of the distance from V-LED. Localized irradiance values were statistically different between beam locations and different distances from the target. V-LED produced lower ΔE
conclusionsV-LED irradiance was heterogeneous and decreased throughout the exposure cycles and was also greatly reduced with increasing tip distance. V-LED produced a significantly lower whitening effect on BT and control teeth. CLINICAL RELEVANCE: This study contributes to the knowledge of V-LED and its clinical use.
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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.