Evaluation of color change using CIE LAB coordinates on tooth structure subjected to different concentrations of peroxide carbamide
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad de Periodoncia de Chile
2018
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| _version_ | 1876435974934757376 |
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| author | Gerardo Durán |
| author_facet | Gerardo Durán |
| contents | Evaluation of color change using CIE LAB coordinates on tooth structure subjected to different concentrations of peroxide carbamide Gerardo Durán Felipe Salas Sandra Gajardo Christopher Morales Ismael Henríquez Luis Barrios Fernando Rosales Medicina Tooth bleaching Peroxide carbamide Aim: The aim of this study was to evaluate the optical behavior of tooth color using CIE L*A*B* space; the teeth were subjected to novel bleaching gels containing peroxide carbamide with potassium oxalate. Materials and Method: Three different carbamide peroxide gels were experimentally fabricated. They consisted of 10% (G10), 16% (G16) and 37% (G37) concentrations. Sixty recently extracted premolars were subjected to different bleaching protocols. Color change (ΔE) was assessed using the CIE L*a*b* system after the application of each gel. The data were analyzed using one-way ANOVA with Tukey’s post hoc test (α=5%) and a t-test. Results: The G10 and G16 gels exhibited an increase in ΔE*ab parameters from T0 to T1 (T0: application day of the gels. T1: 14th day measurement); a small decrease from T1 to T2 was also noted (T2: control measurement, 28th day). However, no statistically significant differences were found (p=0,22 for G10 and p=0,10 for G16). The G37 gel also exhibited an increase in ΔE*ab parameters, with similar results after the first application of 45 min, the second application of 45 min, and the third application of 45 min (T1, T2 and T3, respectively. T4: control measurement, 14th day). No statistically significant differences were observed between the three times of application (p>0,69), and an appreciable difference was noted between times T3 and T4 (p=0,000). Conclusions: The presented formulations of peroxide carbamide at 10%, 16%, and 37% are clearly effective. The G10 and G16 gels exhibited better effectiveness than the G37 gel. 2018 artículo científico 0718-5391 https://www.redalyc.org/articulo.oa?id=331058233003 https://www.redalyc.org/journal/3310/331058233003/ https://www.redalyc.org/journal/3310/331058233003/html/ https://www.redalyc.org/journal/3310/331058233003/331058233003.epub https://www.redalyc.org/journal/3310/331058233003/movil en http://www.redalyc.org/revista.oa?id=3310 Revista Clínica de Periodoncia, Implantología y Rehabilitación Oral application/pdf Sociedad de Periodoncia de Chile Revista Clínica de Periodoncia, Implantología y Rehabilitación Oral (Chile) Num.3 Vol.11 |
| format | Artículo científico |
| id | redalyc_331058233003 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Sociedad de Periodoncia de Chile |
| spellingShingle | Evaluation of color change using CIE LAB coordinates on tooth structure subjected to different concentrations of peroxide carbamide Gerardo Durán Medicina Tooth bleaching Peroxide carbamide Evaluation of color change using CIE LAB coordinates on tooth structure subjected to different concentrations of peroxide carbamide Gerardo Durán Felipe Salas Sandra Gajardo Christopher Morales Ismael Henríquez Luis Barrios Fernando Rosales Medicina Tooth bleaching Peroxide carbamide Aim: The aim of this study was to evaluate the optical behavior of tooth color using CIE L*A*B* space; the teeth were subjected to novel bleaching gels containing peroxide carbamide with potassium oxalate. Materials and Method: Three different carbamide peroxide gels were experimentally fabricated. They consisted of 10% (G10), 16% (G16) and 37% (G37) concentrations. Sixty recently extracted premolars were subjected to different bleaching protocols. Color change (ΔE) was assessed using the CIE L*a*b* system after the application of each gel. The data were analyzed using one-way ANOVA with Tukey’s post hoc test (α=5%) and a t-test. Results: The G10 and G16 gels exhibited an increase in ΔE*ab parameters from T0 to T1 (T0: application day of the gels. T1: 14th day measurement); a small decrease from T1 to T2 was also noted (T2: control measurement, 28th day). However, no statistically significant differences were found (p=0,22 for G10 and p=0,10 for G16). The G37 gel also exhibited an increase in ΔE*ab parameters, with similar results after the first application of 45 min, the second application of 45 min, and the third application of 45 min (T1, T2 and T3, respectively. T4: control measurement, 14th day). No statistically significant differences were observed between the three times of application (p>0,69), and an appreciable difference was noted between times T3 and T4 (p=0,000). Conclusions: The presented formulations of peroxide carbamide at 10%, 16%, and 37% are clearly effective. The G10 and G16 gels exhibited better effectiveness than the G37 gel. 2018 artículo científico 0718-5391 https://www.redalyc.org/articulo.oa?id=331058233003 https://www.redalyc.org/journal/3310/331058233003/ https://www.redalyc.org/journal/3310/331058233003/html/ https://www.redalyc.org/journal/3310/331058233003/331058233003.epub https://www.redalyc.org/journal/3310/331058233003/movil en http://www.redalyc.org/revista.oa?id=3310 Revista Clínica de Periodoncia, Implantología y Rehabilitación Oral application/pdf Sociedad de Periodoncia de Chile Revista Clínica de Periodoncia, Implantología y Rehabilitación Oral (Chile) Num.3 Vol.11 |
| title | Evaluation of color change using CIE LAB coordinates on tooth structure subjected to different concentrations of peroxide carbamide |
| topic | Medicina Tooth bleaching Peroxide carbamide |
| url | https://www.redalyc.org/articulo.oa?id=331058233003 https://www.redalyc.org/journal/3310/331058233003/ https://www.redalyc.org/journal/3310/331058233003/html/ https://www.redalyc.org/journal/3310/331058233003/331058233003.epub https://www.redalyc.org/journal/3310/331058233003/movil |