The influence of violet LED light on tooth bleaching protocols: In vitro study of bleaching effectiveness

Daltro, Thaiany Wendy Silva; Almeida, Suênia Andressa Gomes de; Dias, Marlon Ferreira; Lins-Filho, Paulo Cardoso; Silva, Claúdio Heliomar Vicente da; Guimarães, Renata Pedrosa

doi:10.1016/j.pdpdt.2020.102052

Cited by 24 publications

(15 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The present study evaluated alternatives to the in-office dental bleaching protocol to identify an approach that could maintain the bleaching efficacy and reduce side effects, using violet light for the partial or total breakdown of chromogens [ 10 11 16 17 ]. Among the gels for in-office bleaching, those based on hydrogen and carbamide peroxide at high concentrations (above 30%) are the most used.…”

Section: Discussionmentioning

confidence: 99%

“…Violet light has a wavelength that varies between 405 and 410 nm. The wavelength range of the violet light corresponds to the absorption peak of the pigment molecules, which are greatly reactive to light, promoting the breakdown of the bonds present in the molecular chains that form the pigments present in the tooth structure [ 10 11 16 17 ]. Violet light does not seem to promote demineralization effect on the enamel or cause alterations in enamel morphology [ 16 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Violet light does not seem to promote demineralization effect on the enamel or cause alterations in enamel morphology [ 16 18 ]. V-LED can be used with and without bleaching gel during in-office bleaching [ 9 11 16 17 ]. The application of V-LED alone, without gel application, would reduce the post-bleaching sensitivity, making the patient’s postoperative period more comfortable [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, the results regarding its efficacy have not yet been fully demonstrated. Studies have shown that the use of V-LED alone can have a bleaching effect, but to a lesser extent than when used in association with carbamide or hydrogen peroxide-based gels [ 11 16 17 ]. In a clinical study, the group that was subjected to tooth bleaching with V-LED showed significantly more color change than the group that did not use the violet light [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

In-office dental bleaching with violet light emitting diode: bleaching efficacy and pulpal temperature rise

et al. 2022

View full text Add to dashboard Cite

Objectives This study evaluated the bleaching efficacy of different in-office protocols associated with violet light emitting diode (V-LED), and measured the pulpal temperature rise caused by V-LED with or without gel application. Materials and Methods Bovine incisors were distributed in 4 groups ( n = 10): VL – V-LED; HP – 35% hydrogen peroxide (control); HYB – hybrid protocol, V-LED applied without gel for 10 irradiation cycles followed by V-LED applied with gel for another 10 irradiation cycles; and HPVL – gel and V-LED applied for 20 irradiation cycles. Three bleaching sessions were performed with 7-day intervals. Bleaching efficacy was evaluated with , Δ E 00 and Δ WI D . Data were recorded at baseline, 7, 14, 21 and 70 days. For pulpal temperature rise, thermocouples were placed inside the pulp chamber of human incisors. To determine intrapulpal temperature, the teeth were irradiated with V-LED with or without application of bleaching gel. Color difference data were analyzed by 2-way repeated measures ANOVA and Tukey’s test. Pulpal temperature was analyzed by t -test (α = 5%). Results VL exhibited lower color ( and Δ E 00 ) and whiteness changes (Δ WI D ) than the other groups. HPVL presented higher color change values than HYB. HYB and HPVL showed not different Δ WI D values; and HP showed the highest whiteness changes at all times. There were significant differences comparing ΔT with gel (8.9°C) and without gel application (7.2°C). Conclusions HPLV was more efficient than HYB. The 2 protocols with VL showed similar results to control. Gel application combined with VL promoted higher pulpal temperature than to the no gel group.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In-office dental bleaching with violet light emitting diode: bleaching efficacy and pulpal temperature rise

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In particular, an emergent non-destructive and harmless tooth whitening strategy wherein typical toothpaste abrasives were replaced with piezoelectric BaTiO 3 (BTO) particles has shown that routine daily toothbrushing itself without extra time-consuming and additional equipment can generate ROS necessary for effective tooth whitening 2 . However, such photo-catalysis and piezo-catalysis-based tooth whitening procedures have been challenged due to either photo-allergic reactions, or the unavailable intrinsic physical stimuli of light irradiation and ultrasonic mechanical vibration (Supplementary Table 1 ) 13 , 14 . Therefore, an effective, non-destructive and harmless tooth whitening procedure that requires no additional external energy or specialized equipment is in demand.…”

Section: Introductionmentioning

confidence: 99%

Pyro-catalysis for tooth whitening via oral temperature fluctuation

Wang

Meng

et al. 2022

Nat Commun

View full text Add to dashboard Cite

Tooth whitening has recently become one of the most popular aesthetic dentistry procedures. Beyond classic hydrogen peroxide-based whitening agents, photo-catalysts and piezo-catalysts have been demonstrated for non-destructive on-demand tooth whitening. However, their usage has been challenged due to the relatively limited physical stimuli of light irradiation and ultrasonic mechanical vibration. To address this challenge, we report here a non-destructive and convenient tooth whitening strategy based on the pyro-catalysis effect, realized via ubiquitous oral motion-induced temperature fluctuations. Degradation of organic dyes via pyro-catalysis is performed under cooling/heating cycling to simulate natural temperature fluctuations associated with intake and speech. Teeth stained by habitual beverages and flavorings can be whitened by the pyroelectric particles-embedded hydrogel under a small surrounding temperature fluctuation. Furthermore, the pyro-catalysis-based tooth whitening procedure exhibits a therapeutic biosafety and sustainability. In view of the exemplary demonstration, the most prevalent oral temperature fluctuation will enable the pyro-catalysis-based tooth whitening strategy to have tremendous potential for practical applications.

show abstract

Low and high hydrogen peroxide concentrations of in-office dental bleaching associated with violet light: an in vitro study

Vardasca,

Favoreto,

de Araujo Regis

et al. 2024

Clin Oral Invest

View full text Add to dashboard Cite

The influence of violet LED light on tooth bleaching protocols: In vitro study of bleaching effectiveness

Cited by 24 publications

References 7 publications

In-office dental bleaching with violet light emitting diode: bleaching efficacy and pulpal temperature rise

In-office dental bleaching with violet light emitting diode: bleaching efficacy and pulpal temperature rise

Pyro-catalysis for tooth whitening via oral temperature fluctuation

Low and high hydrogen peroxide concentrations of in-office dental bleaching associated with violet light: an in vitro study

Contact Info

Product

Resources

About