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Avaliação da infiltração marginal das restaurações em compósito: estudo piloto in vitro
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| Projeto de pós-graduação_39643 | 1.14 MB | Adobe PDF |
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Abstract(s)
Objetivo: O objetivo deste estudo é criar e desenvolver um instrumento para identificacão precoce de microinfiltração em restaurações em compósito e ver a sua eficácia e utilidade. Materiais e Métodos: O estudo será conduzido com 60 dentes naturais, divididos em 4 grupos de 15 dentes cada. Um desses grupos foi designado como grupo controlo para fornecer um ponto de referência para comparar os resultados obtidos pelos outros três grupos experimentais, enquanto os outros três diferem no tipo de corante utilizado. Todos os dentes coletados serão preparados para receber restaurações em compósito. Posteriormente serão submetidos a um processo de envelhecimento artificial. Após essa etapa, serão aplicados corantes selecionados nos dentes, fotografados, cortados e analisados microscopicamente. Resultados: Este estudo revelou uma correlação significativa (p<0,05) entre a microinfiltração detectada pelos observadores e aquela verificada microscopicamente, porém essa relação foi negativa, com muitos casos erradamente classificados como isentos de infiltração. Neste estudo, devido à pequena amostra de casos no grupo controle (n=4), não foi possível comprovar que o uso de corantes oferece uma vantagem em relação à observação ampliada de fotos dos dentes. O número elevado de microinfiltrações detectadas com corantes sugere que a ampliação e a análise microscópica antes do envelhecimento devem ser reavaliadas para obter resultados mais precisos. Conclusão: No presente estudo, apesar de não ter havido tempo suficiente para aperfeiçoar a metodologia e realizar novos testes, os experimentos serviram para refinar o protocolo aplicado. Embora não tenha sido possível responder a todas as questões, os resultados indicam a presença de microinfiltrações nas restaurações, sugerindo que o compósito não oferece selamento perfeito no tempo. Além disso, o uso de corantes mostrou-se vantajoso para facilitar o diagnóstico de infiltrações que poderiam passar despercebidas em observações clínicas comuns.Este estudo fornece uma base para melhorar abordagens metodológicas futuras e sugere que, com uma metodologia aprimorada e testes adicionais, os corantes possam se tornar ferramentas mais eficazes na detecção de microinfiltrações.
Objective: The objective of this study is to create and develop an instrument for the early detection of microleakage in composite restorations and assess its effectiveness and usefulness. Materials and Methods: The study will be conducted with 60 natural teeth, divided into 4 groups of 15 teeth each. One of these groups has been designated as the control group to provide a reference point for comparing the results obtained by the other three experimental groups, while the other three differ in the type of dye used. All collected teeth will be prepared to receive composite restorations. Subsequently, they will undergo an artificial aging process. After this step, selected dyes will be applied to the teeth, which will then be photographed, sectioned, and analyzed microscopically. Results: This study revealed a significant correlation (p<0.05) between microleakage detected by observers and that verified microscopically; however, this relationship was negative, with many cases incorrectly classified as free of leakage. In this study, due to the small sample of cases in the control group (n=4), it was not possible to demonstrate that the use of dyes offers an advantage over the enlarged observation of photos of the teeth. The high number of microleakages detected with dyes suggests that magnification and microscopic analysis before artificial aging should be re-evaluated to obtain more accurate results. Conclusion: In this study, although there was not enough time to refine the methodology and conduct new tests, the experiments served to refine the applied protocol. While it was not possible to answer all the questions, the results indicate the presence of microleakages in the restorations, suggesting that the composite does not provide perfect sealing over time. Additionally, the use of dyes proved advantageous for facilitating the diagnosis of leakages that could go unnoticed in common clinical observations. This study provides a foundation for improving future methodological approaches and suggests that, with an improved methodology and additional tests, dyes could become more effective tools in detecting microleakages.
Objective: The objective of this study is to create and develop an instrument for the early detection of microleakage in composite restorations and assess its effectiveness and usefulness. Materials and Methods: The study will be conducted with 60 natural teeth, divided into 4 groups of 15 teeth each. One of these groups has been designated as the control group to provide a reference point for comparing the results obtained by the other three experimental groups, while the other three differ in the type of dye used. All collected teeth will be prepared to receive composite restorations. Subsequently, they will undergo an artificial aging process. After this step, selected dyes will be applied to the teeth, which will then be photographed, sectioned, and analyzed microscopically. Results: This study revealed a significant correlation (p<0.05) between microleakage detected by observers and that verified microscopically; however, this relationship was negative, with many cases incorrectly classified as free of leakage. In this study, due to the small sample of cases in the control group (n=4), it was not possible to demonstrate that the use of dyes offers an advantage over the enlarged observation of photos of the teeth. The high number of microleakages detected with dyes suggests that magnification and microscopic analysis before artificial aging should be re-evaluated to obtain more accurate results. Conclusion: In this study, although there was not enough time to refine the methodology and conduct new tests, the experiments served to refine the applied protocol. While it was not possible to answer all the questions, the results indicate the presence of microleakages in the restorations, suggesting that the composite does not provide perfect sealing over time. Additionally, the use of dyes proved advantageous for facilitating the diagnosis of leakages that could go unnoticed in common clinical observations. This study provides a foundation for improving future methodological approaches and suggests that, with an improved methodology and additional tests, dyes could become more effective tools in detecting microleakages.
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Keywords
Corante oral Microinfiltração Restauração dentária Compósito Envelhecimento artificial Oral dye Microleakage Dental restoration Composite Artificial aging