Effects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties

Costa, Joatan Lucas de Sousa Gomes; Besegato, João Felipe; Zaniboni, Joissi Ferrari; Galvani, Lucas David; Kuga, Milton Carlos

doi:10.1016/j.pdpdt.2022.102733

Cited by 12 publications

(5 citation statements)

References 42 publications

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“…Although it has already been reported 9,10,12) that the incidence of violet light is not complementary to the orange and red colors, it is clear how much higher the values were in relation to HP6 group (yellow), where the temperature peak reached an approximate variation of 7ºC, even with the more opaque appearance of the gel in relation to the other two. However, this lower interaction of the HP6 group with the LED/laser system used does not prevent satisfactory aesthetic results, and the gel is presented as an interesting conservative alternative 5,21,22) .…”

Section: Discussionmentioning

confidence: 99%

“…It is difficult to obtain precise conclusions about tooth whitening since the results are dependent on several variables and the lack of standardization of protocols is recurrent in related studies. The gels used in this study are part of a new trend that has been implemented in dentistry whom presents in its composition the addition of TiO 2 with nitrogen particles, as a semiconductor 5,17,18) . The interaction of these compounds with blue or violet LED allows the implementation of several protocols.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the lower thermal conductivity level, there is still the circulation of pulp fluid and blood circulation that act as heat sinks, protecting the pulp 23,25,26) . Furthermore, these alternative protocols have been shown esthetic efficacy comparable with 35% HP 5,21,27) which can predict good clinical outcomes depending on patient's cooperation.…”

Section: Discussionmentioning

confidence: 99%

“…The photoactivation of whitening agents by lasers and/or violet LED sources (405±10 nm) has been proposed to enhance the production of free radicals and their penetrability into dental structure to provide the breaks of staining macromolecules in a time-saving manner [5][6][7] . The use of light sources in tooth whitening assumes that enamel whitening occurs through the photon energy transmission derived from the light with maximization of gel oxidation 8) .…”

Section: Introductionmentioning

confidence: 99%

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Surface and intra-pulpal temperature variation during tooth whitening photoactivated with LED/laser

et al. 2023

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This study evaluated the variation of surface and intra-pulpal temperature, during bleaching protocol, using LED/laser. The 35% (HP35), 15% (HP15) and 6% (HP6) gels were used associated with LED/laser applied every 1 min for 30 min in a human canine. The evaluation of surface temperature variation (∆Ts) was performed using a pHmeter and the intra-pulpal temperature variation (∆Ti ) was performed using a digital thermometer, at times of 1-, 5-, 10-15-and 30-min. Statistical analysis was performed using the twoway repeated measures ANOVA test and Bonferroni post-hoc test was used at a significance level of 5%. HP35 and HP15 showed greater temperature variation than HP6 up to 10 min of surface evaluation, showing no differences between them. In the intra-pulpal evaluation, no group showed differences throughout the procedure.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface and intra-pulpal temperature variation during tooth whitening photoactivated with LED/laser

et al. 2023

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“…We also developed a new tooth staining model. Staining materials such as blood, tea, and coffee are often used to develop in vitro tooth staining models [ 34 , 35 , 36 ]. Sulieman et al [ 37 ] used tea to develop a model of dental staining to standardize in vitro research.…”

Section: Introductionmentioning

confidence: 99%

Dental Bleaching with Phthalocyanine Photosensitizers: Effects on Dentin Color and Collagen Content

Wang

et al. 2023

Molecules

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With the increasing demand for tooth bleaching in esthetic dentistry, its safety has been the focus of a comprehensive body of literature. In this context, the aim of the present study was to evaluate the application effects of pentalysine β-carbonylphthalocyanine zinc (ZnPc(Lys)5)-mediated photodynamic therapy in dentin bleaching and its effects on dentin collagen. We first established a new and reproducible tooth staining model using dentin blocks stained by Orange II and then bleached with ZnPc(Lys)5 (25 μM) and hydrogen peroxide (10% or 30%). Data were analyzed with one- and two-way ANOVA and a significance level of p < 0.05. ZnPc(Lys)5 effectively bleached the dentin samples to an extent comparable to hydrogen peroxide at either 10% or 30% concentrations. Further studies on the dentin morphology, chemical element distribution, and protein constituents, using an electron microscope, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and SDS-PAGE, demonstrated that treatment with the photosensitizer preserved the dentin structure and, at the same time, the major organic component, collagen type I. For comparison, hydrogen peroxide (10% or 30%) treatment significantly degraded the collagen protein. This work indicated that the photosensitizer exerts potent bleaching effects on dentin staining; importantly, does not damage dentin and its collagen content; and opens up a new strategy to further explore various photosensitizers for the bleaching of both tooth enamel and dentin.

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Maintenance of enamel properties after bleaching with high-concentrated hydrogen-peroxide gel containing calcium polyphosphate sub-microparticles

Ortiz,

dos Santos,

Rodrigues-Filho

et al. 2023

Clin Oral Invest

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Effects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties

Cited by 12 publications

References 42 publications

Surface and intra-pulpal temperature variation during tooth whitening photoactivated with LED/laser

Surface and intra-pulpal temperature variation during tooth whitening photoactivated with LED/laser

Dental Bleaching with Phthalocyanine Photosensitizers: Effects on Dentin Color and Collagen Content

Maintenance of enamel properties after bleaching with high-concentrated hydrogen-peroxide gel containing calcium polyphosphate sub-microparticles

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