The effects of bleaching agents on the superficial structure of the enamel

• Autor(a) principal: Silva, Ricardo Manuel Duarte da
• Data de Publicação: 2023
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/20.500.11816/4505
• topic: Enamel; Bleaching agents; Surface roughness

Introduction: About 30% of patients have a certain degree of insatisfaction with their tooth color, this leads to a high search for aesthetic bleaching treatments. This procedure is done with gels and others bleaching products. Growing evidence shows that the usage of these agents have an impact on the roughness and hardness of the enamel, which is independent of type of bleaching agent or its concentration. These agents are useful but their impact on the superficial surface of the enamel remains controversial. Objective: Enlightening the effects of bleaching agents on the superficial structure of the enamel. Materials and methods: Bibliographic review of articles between 2004-2023 on PubMed using the following keywords “enamel”, “bleaching agents”, “surface roughness”,” enamel surface roughness”. After a strict analysis with the submission of the inclusion and exclusion criteria, articles were selected. Results: The bibliographic research carried out 86 articles and 12 scientific articles were considered eligible. Ten analyzed the impact on the hardness and roughness of the enamel by agents based on peroxide derivates, 1 article the impact of pastes based on coal dust and 1 article associates the use of the bleaching process with brushing. The methods used to evaluate hardness and roughness were the Knoop method (n=2) and profilometer test (n=3). Discussion: The analysis showed that the use of agents based on peroxide derivates is associated with changes in enamel (n=8). Conclusion: The use of bleaching agents, has an impact on the enamel structure, causing changes in the surface layer and sublayers of the dental parts