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Authors
Abstract(s)
Introdução: A pigmentação dentária tem vindo a ser identificada como uma das
principais causas de insatisfação ao nível da estética dentária. A pigmentação extrínseca
é o tipo mais comum e ocorre na maioria das vezes devido à deposição de pigmentos na
superfície dos dentes, através da interação química entre os compostos cromogénicos e
a superfície dentária. Não obstante, a literatura é escassa na quantificação real que a
pigmentação extrínseca confere ao esmalte dentário íntegro.
Objectivo: O presente estudo in vitro teve assim como objetivo avaliar o potencial de
pigmentação de determinadas bebidas sobre a estabilidade da cor dos elementos
dentários.
Pretendemos ainda comparar a determinação de cor pelo método tradicional recorrendo
à escala VITA clássica, com o sistema de determinação de cor através do uso do
espectofotómetro (CIE L*a*b*).
Materiais e Métodos: Foram recolhidos dentes íntegros e hígidos e distribuídos por
cada grupo da experiência. Foi determinada a cor dentária inicial de cada amostra
através da escala VITA Clássica e através do espectrofotómetro (VITA Easyshade®) e
em cada leitura retirado o valor de L*, a*, e b*(CIELab). Durante quinze dias procedeuse
à experiência in vitro na qual os grupos de dentes foram colocados em soluções
previamente selecionadas: café, vinho tinto, chá preto, Coca-Cola ®, vodka preta e leite
com chocolate. No final foi novamente determinada a cor pelos mesmos métodos.
Resultados: Relativamente às soluções testadas a coca-cola ® foi a que mais pigmentou
a superfície dentária (ΔE*=41,2738), seguida do vinho tinto (ΔE*=28,0128), da vodkapreta
(ΔE*=11,9008), do café (ΔE*=11,8624), do chá preto (ΔE*=10,3260), e por
último do leite com chocolate (ΔE*=6,4895). Houve significância estatística para
algumas das situações.
Conclusões: Todas as soluções testadas neste estudo apresentaram capacidade de
pigmentar a estrutura dentária, sendo a coca-cola a que mais contribuiu para a
pigmentação dentária. Os métodos de comparação de cor em estudo apresentaram
concordância na maioria das situações.
Introduction: Dental pigmentation has been identified as one of the main causes of insatisfaction regarding dental aesthetics. The extrinsic pigmentation is the most common type, happening mostly due to pigment deposition on the teeth’s surface, due to chemical interaction between chromogenic composts and the dental surface. Nevertheless, the literature is scarce in regard to the real quantification that extrinsic pigmentation gives to the heathy dental enamel. Objetive: The present study in vitro aims to evaluate the potential pigmentation of certain beverages on the color stability of dental elements. We also pretended to compare the traditional method of determining color using the classic VITA scale, with the color determining system thought the use of spectrophotometer (CIE L*a*b*). Materials and methods: Integrate and health teeth were retrieved and distributed by each experimental group. The initial dental color of each sample was determined using the Classic VITA Scale and the spectrophotometer (VITA Easyshade®) and the value of L*, a*, and b* (CIEL*a*b*) was determined in each analysis. An in vitro experience was preceded. All of the groups of teeth were set on previously selected solutions: coffee, red wine, black tea, Coca-Cola®, black vodka and chocolate milk during fifteen days. In the end, the color was determined by the same methods. Results: As to the tested solutions are concerned, Coca-Cola ® (ΔE*=41, 2738) was the beverage who pigmented the dental surfaces the most, followed by red wine (ΔE*=28, 0128), black vodka (ΔE*=11, 9008), coffee (ΔE*=11, 8624), black tea (ΔE*=10,3260) and finally chocolate milk (ΔE*=6,4895). There was statistical significance for some of the correspondent situations. Conclusions: All the tested solutions in the present study exhibited the potential to pigment the dental surface, with Coca-Cola® being the one who most contributed for dental pigmentation. The methods of color comparison studied showed concordance for most of the situations.
Introduction: Dental pigmentation has been identified as one of the main causes of insatisfaction regarding dental aesthetics. The extrinsic pigmentation is the most common type, happening mostly due to pigment deposition on the teeth’s surface, due to chemical interaction between chromogenic composts and the dental surface. Nevertheless, the literature is scarce in regard to the real quantification that extrinsic pigmentation gives to the heathy dental enamel. Objetive: The present study in vitro aims to evaluate the potential pigmentation of certain beverages on the color stability of dental elements. We also pretended to compare the traditional method of determining color using the classic VITA scale, with the color determining system thought the use of spectrophotometer (CIE L*a*b*). Materials and methods: Integrate and health teeth were retrieved and distributed by each experimental group. The initial dental color of each sample was determined using the Classic VITA Scale and the spectrophotometer (VITA Easyshade®) and the value of L*, a*, and b* (CIEL*a*b*) was determined in each analysis. An in vitro experience was preceded. All of the groups of teeth were set on previously selected solutions: coffee, red wine, black tea, Coca-Cola®, black vodka and chocolate milk during fifteen days. In the end, the color was determined by the same methods. Results: As to the tested solutions are concerned, Coca-Cola ® (ΔE*=41, 2738) was the beverage who pigmented the dental surfaces the most, followed by red wine (ΔE*=28, 0128), black vodka (ΔE*=11, 9008), coffee (ΔE*=11, 8624), black tea (ΔE*=10,3260) and finally chocolate milk (ΔE*=6,4895). There was statistical significance for some of the correspondent situations. Conclusions: All the tested solutions in the present study exhibited the potential to pigment the dental surface, with Coca-Cola® being the one who most contributed for dental pigmentation. The methods of color comparison studied showed concordance for most of the situations.
Description
Keywords
Pigmentação dentária Escalas VITA Espectrofotómetro Dental pigmentation VITA scales Spectrophotometer