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Doctoral Thesis
DOI
https://doi.org/10.11606/T.25.2023.tde-03052024-091130
Document
Author
Full name
Daniella Cristo Santin
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2023
Supervisor
Committee
Wang, Linda (President)
Garcia, Fernanda Cristina Pimentel
Naufel, Fabiana Scarparo
Velo, Marilia Mattar de Amoêdo Campos
Title in Portuguese
Lesões cervicais não cariosas: mapeamento do conhecimento e manejo clínico e performance de materiais de baixa viscosidade frente ao desafio erosivo
Keywords in Portuguese
desgaste dos dentes
gerenciamento clínico
inquéritos e questionários
resinas compostas
teste de materiais
Abstract in Portuguese
Lesões cervicais não cariosas (LCNC) possuem etiologia multifatorial, dificultando o diagnóstico e consequente manejo clínico. Nesse sentido, o Artigo 1 objetiva avaliar o conhecimento de estudantes de odontologia e dentistas que atuam no Brasil com relação a etiologia, diagnóstico e tratamento de LCNC. Além disso, considerando que procedimentos restauradores geralmente são realizados para reestabelecer a estrutura dentária perdida, é interessante investigar o desempenho dos materiais frente a diferentes desafios. Assim, o Artigo 2 objetiva analisar o comportamento de materiais de baixa viscosidade frente ao desafio erosivo com suco de laranja. Com relação ao Artigo 1, o presente trabalho encontrou que o conhecimento dos estudantes quanto ao manejo das LCNC é inferior em relação aos dentistas, contudo, questões etiológicas e terapêuticas ainda parecem ser um problema para os clínicos. No Artigo 2, uma série de propriedades foram avaliadas em espécimes de cimento de ionômero de vidro modificado por resina (GC Gold Label 2-GL), resinas compostas fluídas convencionais (Filtek Supreme Flowable Restorative-FSF, Beautifil Flow Plus F00-F00) e fluídas bulk-fill (Filtek Bulk Fill Flowable Restorative-FBF, Beautifil Bulk Flowable-BBF) sem e com ingrediente bioativo, respectivamente. Neste trabalho, GL mostrou menor resistência aos desafios erosivos tanto para a análise de cor como de microdureza Knoop. F00 também foi afetada pelo suco de laranja, apresentando menor resistência a flexão para esta condição. BBF demonstrou maior módulo de elasticidade dentre as resinas e, gerou menos estresse de contração. Além disso, o grau de conversão dos materiais avaliados resultou em taxa superior a 55%. Pode-se concluir que os estudantes e dentistas do Brasil possuem conhecimento limitado sobre LCNC, dificultando a tomada de decisão clínica. O estudo também sugere que resinas fluídas poderiam ser utilizadas quando um componente erosivo estiver associado, especialmente a bulk-fill bioativa.
Title in English
Non-carious cervical lesions: mapping clinical knowledge and management and performance of low-viscosity materials on erosive challenges
Keywords in English
composite resins
disease management
materials testing
surveys and questionnaires
tooth wear
Abstract in English
Non-carious cervical lesions (NCCL) have a multifactorial etiology, turning diagnosis and consequent clinical management difficult. In this sense, Article 1 aims to evaluate the knowledge of dentistry students and dentists working in Brazil regarding the etiology, diagnosis and treatment of NCCL. Furthermore, considering that restorative procedures are generally performed to reestablish lost tooth structure, it is interesting to investigate the performance of materials facing different challenges. Thus, Article 2 aims to analyze the behavior of low-viscosity materials when exposed to erosive challenge with orange juice. Regarding Article 1, the present work found that students' knowledge regarding the management of NCCL is poorer in relation to dentists, however, etiological and therapeutic issues still seem to be limited for clinicians. In Article 2, a series of properties were evaluated in specimens of resin-modified glass ionomer cement (GC Gold Label 2-GL), conventional flowable resin composites (Filtek Supreme Flowable Restorative-FSF, Beautifil Flow Plus F00-F00) and flowable bulk-fill (Filtek Bulk Fill Flowable Restorative-FBF, Beautifil Bulk Flowable-BBF) without and with bioactive ingredient, respectively. In this work, GL showed less resistance to erosive challenges for both color and Knoop microhardness analysis. F00 was also affected by orange juice, showing lower flexural strength for this condition. BBF demonstrated the highest modulus of elasticity among the resins and generated less shrinkage stress. Furthermore, degree of conversion of these materials was evaluated, reaching a rate higher than 55%. It can be concluded that students and dentists in Brazil have limited knowledge about NCCL, making clinical decision-making difficult. The study also suggests that flowable resin composites could be used when an erosive component is present, especially bioactive bulk-fill.
 
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Release Date
2025-12-20
Publishing Date
2024-05-03
 
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