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Pesqui. bras. odontopediatria clín. integr ; 12(2): 203-207, jul. 2012. tab
Article in Portuguese | LILACS, BBO | ID: biblio-874603

ABSTRACT

Objetivo: Comparar o potencial erosivo de bebidas light e zero em relação a sua versão regular sobre o esmalte. Método: Blocos de esmalte bovino foram divididos em 7 grupos (n=10) e submetidos à ciclagem erosiva com a versão regular ou light/zero das seguintes bebidas: Coca-cola®, Guaraná® e Sprite®. Antes da imersão, metade da superfície dos blocos de esmalte foi protegida com esmalte cosmético para referência na análise perfilométrica. As imersões nas bebidas de acordo com os grupos em estudo foram realizadas 4 vezes ao dia durante 2 minutos. Entre os desafios erosivos os blocos foram imersos em saliva artificial por 2 horas. A cada dia, após as 4 ciclagens erosivas os blocos foram armazenados em saliva artificial. Ao final do 5º dia de ciclagem a alteração da superfície do esmalte foi analisada por perfilometria (µm). Os dados foram analisados com ANOVA e teste de Tukey (para as bebidas tipo cola) e teste t não pariado (para as outras bebidas) (p menor que 0.05). Resultados: A cola light (0.52±0.19) provocou um desgaste similar a cola zero (0.54±0.17) e ambas causaram menor desgaste quando comparadas a cola regular (2.15±0.65). A sprite regular (1.17±0.36) provocou menor desgaste do que a versão zero (2.25±0.75). Os guaranás regular (1.03±0.36) e light (1.02±0.26) resultaram em desgaste semelhante no esmalte. Conclusão: O presente estudo in vitro constatou que as colas light e zero apresentaram menor potencial erosivo, o que não foi observado para as versões zero da guaraná e da Sprite, as quais causaram desgaste semelhante e maior que a versão regular, respectivamente.


Objective: The aim of this study was to evaluate the erosive potential of light and zero soft drinks compared with the regular version on dental enamel. Method: Bovine enamel slabs were divided into 7 groups (n=10) and subjected to erosive challenge by immersion in the light, zero and regular versions of the following soft drinks: Coca-cola®, Guaraná® and Sprite®. Before immersion in the beverages, half of slab surface was protected with nail varnish for reference for the profilometry analysis. The enamel slabs were immersed in the beverages for 2 minutes, 4 times a day, at room temperature. Between challenges, the slabs were maintained in artificial saliva for 2 hours. Every day after completion of the four pH-cycles, the samples were stored in artificial saliva overnight. At the end of the 5th day of erosive challenge, the alterations on enamel surface were measured by profilometry (µm). Data were analyzed by ANOVA and Tukey's test (for cola drinks) and unpaired t test (for the other beverages) (p less than 0.05). Results: Light Coca-cola® (0.52±0.19) promoted similar enamel wear to zero Coca-cola® (0.54±0.17), and both resulted in less enamel loss compared with regular Coca-cola® (2.15±0.65). However, regular Sprite (1.17±0.36) caused lower enamel wear than its zero version (2.25±0.75). Regular (1.03±0.36) and light (1.02±0.26) Guaraná® caused similar wear in enamel. Conclusion: This in vitro study demonstrated that light and zero Coca-cola® had less erosive potential than the regular version of this soft drink. The same result, however, was not observed for the zero versions of Guaraná® and Sprite®, which caused similar and higher enamel wear, respectively, compared with their regular versions.


Subject(s)
Tooth Wear/diagnosis , Diet , Tooth Erosion/diagnosis , Tooth Erosion/prevention & control , Carbonated Beverages , Analysis of Variance , In Vitro Techniques
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