Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions
This study evaluate the effect of whitening with violet LED (LED) combined or not with 37% carbamide (CP) or 35% hydrogen peroxide on enamel stained with cigarette smoke (SK), coffee (CF) and red wine (RW). Bovine dental blocks were obtained and stained with extrinsic pigments (n=50): SK, CF, RW or...
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| Format: | Online |
| Language: | Portuguese |
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Universidade Estadual de Campinas
2019
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| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/2045 |
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| author | Kobayashi, Roberta Gobbo, Vanessa Picolo, Mayara Dal Rodrigues, Matheus Silva, Daylana da Resende, Bruna Giannini, Marcelo |
| author_facet | Kobayashi, Roberta Gobbo, Vanessa Picolo, Mayara Dal Rodrigues, Matheus Silva, Daylana da Resende, Bruna Giannini, Marcelo |
| author_sort | Kobayashi, Roberta |
| collection | Portal de Eventos Científicos da UNICAMP |
| container_reference | Revista dos Trabalhos de Iniciação Científica da UNICAMP; n. 27 (2019): Congresso de Iniciação Científica UNICAMP; 1-1 |
| description | This study evaluate the effect of whitening with violet LED (LED) combined or not with 37% carbamide (CP) or 35% hydrogen peroxide on enamel stained with cigarette smoke (SK), coffee (CF) and red wine (RW). Bovine dental blocks were obtained and stained with extrinsic pigments (n=50): SK, CF, RW or control (C). Specimens were whitened following protocols: LED, LED/CP, CP, LED/HP or HP. Color change (DE) was measured considering after staining (T0), 24 hours elapsed from bleaching (TB) and 7 days after treatments (T7) times by means of spectrophotometry. Data was tested by two-way ANOVA and Tukey’s Test. Enamel’s surface morphology was analysed under scanning electron microscope (SEM). Regardless of the extrinsic pigment, LED promoted statistically greater DE for stained groups in comparison to C (p<0,05). LED alone promoted clinical perceptible DE, but in less extent than for gels. LED/CP DE was significanty greater than CP’s for CF, RW and C (p<0.05). Equal DE was found for LED/CP and HP for all pigments (p>0.05), but for CF (p=0,020). LED/HP DE was significantly higher than HP only for CF (p=0.012). Outcomes were mantained after seven days. Topography of enamel suffered alterations under peroxides, but this was not exacerbated by LED irradiation. Effectiveness of LED alone on tooth whitening is enhanced in the presence of extrinsic pigments. Violet LED influenced effectiveness of CP and HP depending on staining type. LED did not change patterns of enamel surface morphology. |
| first_indexed | 2025-10-08T13:56:11Z |
| format | Online |
| id | ojs-article-2045 |
| institution | Universidade Estadual de Campinas |
| issn | 2596-1969 |
| language | por |
| last_indexed | 2025-10-08T13:56:11Z |
| publishDate | 2019 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-20452025-09-26T14:39:16Z Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions Kobayashi, Roberta Gobbo, Vanessa Picolo, Mayara Dal Rodrigues, Matheus Silva, Daylana da Resende, Bruna Giannini, Marcelo LED Staining Peroxide This study evaluate the effect of whitening with violet LED (LED) combined or not with 37% carbamide (CP) or 35% hydrogen peroxide on enamel stained with cigarette smoke (SK), coffee (CF) and red wine (RW). Bovine dental blocks were obtained and stained with extrinsic pigments (n=50): SK, CF, RW or control (C). Specimens were whitened following protocols: LED, LED/CP, CP, LED/HP or HP. Color change (DE) was measured considering after staining (T0), 24 hours elapsed from bleaching (TB) and 7 days after treatments (T7) times by means of spectrophotometry. Data was tested by two-way ANOVA and Tukey’s Test. Enamel’s surface morphology was analysed under scanning electron microscope (SEM). Regardless of the extrinsic pigment, LED promoted statistically greater DE for stained groups in comparison to C (p<0,05). LED alone promoted clinical perceptible DE, but in less extent than for gels. LED/CP DE was significanty greater than CP’s for CF, RW and C (p<0.05). Equal DE was found for LED/CP and HP for all pigments (p>0.05), but for CF (p=0,020). LED/HP DE was significantly higher than HP only for CF (p=0.012). Outcomes were mantained after seven days. Topography of enamel suffered alterations under peroxides, but this was not exacerbated by LED irradiation. Effectiveness of LED alone on tooth whitening is enhanced in the presence of extrinsic pigments. Violet LED influenced effectiveness of CP and HP depending on staining type. LED did not change patterns of enamel surface morphology. Universidade Estadual de Campinas 2019-11-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo de convidado application/pdf https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/2045 10.20396/revpibic2720192045 Revista dos Trabalhos de Iniciação Científica da UNICAMP; n. 27 (2019): Congresso de Iniciação Científica UNICAMP; 1-1 2596-1969 por https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/2045/2099 Copyright (c) 2019 Revista dos Trabalhos de Iniciação Científica da UNICAMP http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Kobayashi, Roberta Gobbo, Vanessa Picolo, Mayara Dal Rodrigues, Matheus Silva, Daylana da Resende, Bruna Giannini, Marcelo LED Staining Peroxide Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title | Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title_full | Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title_fullStr | Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title_full_unstemmed | Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title_short | Effect of tooth whitening with violet LED and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| title_sort | effect of tooth whitening with violet led and peroxides on enamel stained with cigarette smoke, coffee or red wine solutions |
| topic | LED Staining Peroxide |
| url | https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/2045 |
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