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Influência de um substrato metálico na cor final de diferentes resinas compostas
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 1.16 MB | Adobe PDF |
Advisor(s)
Abstract(s)
Introdução: A cor é o principal fator que interfere na aparência final de uma restauração, criando um dos maiores desafios na área da medicina dentária estética. Desta forma, é imprescindível o conhecimento de manuseio com as cores dos materiais aquando da utilização de um substrato metálico. A cor do substrato não pode ser alterada, porém, pode ser disfarçada (masking ability).
Objetivo: O objetivo deste estudo consiste na avaliação in vitro das alterações de cor de duas resinas compostas de diferentes cores, quando utilizados dois substratos metálicos.
Materiais e Métodos: Foram obtidas amostras de resina composta A1 e A3 com espessura de 1 mm. Para além destas amostras, foram produzidas outras em cromo-cobalto e titânio com espessuras de 2 mm. Assim, as amostras de compósito foram emparelhadas de forma aleatória com as amostras metálicas, formando 4 grupos com 10 amostras por grupo. Antes e depois do seu emparelhamento, as amostras foram analisadas com recurso a um espetrofotómetro. Por fim, os dados obtidos foram inseridos no programa informático SPSS (Statistics Package for the Social Sciences) – versão 28 (macOS) para análise estatística.
Resultados: Considerando a resina composta Filtek™ Supreme XTE Body Shade na cor A1, é possível verificar que o substrato de cromo-cobalto apresenta um valor médio de ΔEab estatisticamente superior (4,32 ± 0,66) ao substrato de titânio (1,76 ± 0,46) (p<0,001). O mesmo comportamento é verificado quando utilizada uma resina composta Filtek™ Supreme XTE Body Shade na cor A3, com valores de ΔEab na base cromo-cobalto (4,73 ± 0,37) estatisticamente superiores à base em titânio (2,16 ± 0,30) (p<0,001).
Conclusões: A cor das resinas compostas é influenciada pelos substratos metálicos de titânio e cromo-cobalto.
Introduction: Color is the main factor that interferes with the final appearance of a restoration, creating one of the biggest challenges in the field of aesthetic dentistry. Therefore, knowledge of handling material colors when using a metallic substrate is essential. The color of the substrate cannot be altered, but it can be masked (masking ability). Objective: The objective of this study is to evaluate in vitro the color changes of two composite resins of different colors, when two metallic substrates are used. Materials and Methods: Samples of composite resin A1 and A3 with a thickness of 1 mm were obtained. In addition to these samples, others were produced in chrome-cobalt and titanium with thicknesses of 2 mm. Thus, the composite samples were randomly paired with the metallic samples, forming 4 groups with 10 samples per group. Before and after their pairing, the samples were analyzed using a spectrophotometer. Finally, the data obtained were entered into the SPSS (Statistics Package for the Social Sciences) software - version 28 (macOS) for statistical analysis. Results: Considering the Filtek™ Supreme XTE Body Shade composite resin in the A1 color, it is possible to observe that the chrome-cobalt substrate exhibits a statistically higher average ΔEab value (4.32 ± 0.66) compared to the titanium substrate (1.76 ± 0.46) (p<0.001). The same behavior is observed when using a Filtek™ Supreme XTE Body Shade composite resin in the A3 color, with ΔEab values on the chrome-cobalt base (4.73 ± 0.37) statistically higher than those on the titanium base (2.16 ± 0.30) (p<0.001). Conclusions: The color of composite resins is influenced by titanium and cobalt chrome metal substrates.
Introduction: Color is the main factor that interferes with the final appearance of a restoration, creating one of the biggest challenges in the field of aesthetic dentistry. Therefore, knowledge of handling material colors when using a metallic substrate is essential. The color of the substrate cannot be altered, but it can be masked (masking ability). Objective: The objective of this study is to evaluate in vitro the color changes of two composite resins of different colors, when two metallic substrates are used. Materials and Methods: Samples of composite resin A1 and A3 with a thickness of 1 mm were obtained. In addition to these samples, others were produced in chrome-cobalt and titanium with thicknesses of 2 mm. Thus, the composite samples were randomly paired with the metallic samples, forming 4 groups with 10 samples per group. Before and after their pairing, the samples were analyzed using a spectrophotometer. Finally, the data obtained were entered into the SPSS (Statistics Package for the Social Sciences) software - version 28 (macOS) for statistical analysis. Results: Considering the Filtek™ Supreme XTE Body Shade composite resin in the A1 color, it is possible to observe that the chrome-cobalt substrate exhibits a statistically higher average ΔEab value (4.32 ± 0.66) compared to the titanium substrate (1.76 ± 0.46) (p<0.001). The same behavior is observed when using a Filtek™ Supreme XTE Body Shade composite resin in the A3 color, with ΔEab values on the chrome-cobalt base (4.73 ± 0.37) statistically higher than those on the titanium base (2.16 ± 0.30) (p<0.001). Conclusions: The color of composite resins is influenced by titanium and cobalt chrome metal substrates.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Resina composta Cromo-cobalto Espetrofotómetro Masking ability