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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
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Inicio Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial Efeito de Dois Sistemas de Branqueamento na Rugosidade da Superfície do Esmalte
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Vol. 48. Núm. 2.
Páginas 69-77 (abril - junio 2007)
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Vol. 48. Núm. 2.
Páginas 69-77 (abril - junio 2007)
Investigação
Open Access
Efeito de Dois Sistemas de Branqueamento na Rugosidade da Superfície do Esmalte
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3773
Eunice Virgínia Palmeirão Carrilho*, Anabela Paula**, João Tomaz***, Daniel Gonçalves****, Pedro Antunes*****
* Médica Dentista, Professora Auxiliar de Dentistaria Operatória da Licenciatura em Medicina Dentária da Faculdade de Medicina de Coimbra
** Médica Dentista, Monitora de Dentistaria Operatória da Licenciatura em Medicina Dentária da Faculdade de Medicina de Coimbra
*** Médico Dentista, Monitor Convidado de Dentistaria Operatória da Licenciatura em Medicina Dentária da Faculdade de Medicina de Coimbra
**** Médico Dentista, Monitor Convidado de Endodoncia da Licenciatura em Medicina Dentária da Faculdade de Medicina de Coimbra
***** Engenheiro Mecânico, aluno de Doutoramento da Faculdade de Engenharia Mecânica da Faculdade de Ciências e Tecnologia da Universidade de Coimbra
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Información del artículo
Resumo
Objectivos

avaliar as acções do peróxido de carbamida a10% e do peróxido de hidrogénio a 25% activado pela luz de uma lâmpada LED, na rugosidade da superfície do esmalte e comparar a acção das duas terapêuticas.

Materiais e Métodos

obtiveram-se trinta espécimes após separação das coroas de quinze prémolares divididas no sentido vertical do longo eixo dentário e de vestibular para lingual. Fizeram-se três grupos de acordo com a terapêutica: grupo 1 (sem terapêutica); grupo 2, peróxido de carbamida a 10% (Platinum®, 14 dias); grupo 3, peróxido de hidrogénio a 25% (Zoom! Chairside System®, 60 minutos). Entre tratamentos os espécimes foram imersas em saliva artificial. Antes e 24 horas após os tratamentos os espécimes foram analisadas recorrendo a um teste de rugosidade computorizado.

Resultados

Os resultados foram tratados por comparação dos valores médios e dos desvios padrão, existindo diferenças entre os valores médios das rugosidades das amostras dos grupos sem tratamento e tratados com peróxido de hidrogénio a 25% com luz (parâmetros Ra e Rz) e as do grupo tratado com peróxido de carbamida a 10% (parâmetro Ra, Rz e Rpm).

Conclusões

1 – No grupo 1 não se identifica um aumento dos valores médios da rugosidade.2 – No grupo 2, os valores médios da rugosidade são no geral mais altos para os dentes após o tratamento.3 - No grupo 3, não se identifica um aumento dos valores médios da rugosidade.4 - Outras medições devem ser realizadas, com intervalo de tempo maior, avaliando a possível regressão destes valores.

Palavras-Chave:
Branqueamento
Esmalte
Peróxido de carbamida
Peróxido de hidrogénio
Rugosidade superfícial
Abstract
Aims

to assess the effect of 10% carbamide peroxide and 25% hydrogen peroxide activated by an LED lamp, on the roughness of the enamel surface and to compare the effect of the two treatments.

Materials and Methods

we obtained the thirty samples after the separation of the crowns of fifteen premolars, split vertically on the long dental axis and from the vestibular to the lingual faces. Three groups were established according to the treatment: group 1 (no treatment); group 2, 10% carbamide peroxide (Platinum®, 14 days); group 3, 25% hydrogen peroxide (Zoom! Chairside System®, 60 minutes). Between treatments the samples were immersed in artificial saliva. Before and 24 hours after the treatments, the samples were analyzed using a computerized roughness tester.

Results

The results were assessed by comparison of the mean values and standard deviation. There were differences between the mean values of the roughness of the samples from the groups without treatment and those treated with 25% hydrogen peroxide with light (parameters Ra and Rz), and those from the group treated with 10% carbamide peroxide (parameters Ra, Rz and Rpm).

Conclusions

1 – in group 1 no increase of the mean values of roughness was identified.2 - in group 2 the mean values of roughness are generally higher in teeth after the treatment.3 - in group 3, there was no increase in the mean values of roughness.4 - Further tests need to be carried out with a greater time lapse, in order to assess the regression of these values.

Key-words:
Bleaching
Enamel
Carbamide peroxide
Hydrogen peroxide
Surface roughness
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(Carrilho EVP, Paula A, Tomaz J, Gonçalves D, Antunes P. Efeito de Dois Sistemas de Branqueamento na Rugosidade da Superfície do Esmalte. Rev Port Estomatol Cir Maxilofac 2007;48:69–77)

Copyright © 2007. Sociedade Portuguesa de Estomatologia e Medicina Dentária
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