MECHANICAL AND PHYSICOCHEMICAL PROPERTIES TESTS IN COMPOSITE RESINS: INDICATIONS AND APPLICABILITY
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Abstract
The relationship between the mechanical properties of dental materials and their intraoral performance has been the subject of extensive studies, which have resulted in the identification of significant correlations. Physicochemical properties refer to the characteristics that influence the interaction of materials with the oral environment, encompassing factors such as reactivity, durability, and stability. Among the main physicochemical properties, chemical composition, solubility, water absorption, biocompatibility, color and aesthetics stand out. This chapter addresses the main dental tests to evaluate mechanical and physicochemical properties of resin materials, based on a literature review carried out in the PubMed and SciELO databases, highlighting their characteristics and indications. Flexural strength testing can be related to the clinical problem of deformation, and its data provide indications of the strength properties and modulus of elasticity of a dental material. The hardness of a material corresponds to its resistance to local deformation, not being an intrinsic property of the material, it is the result of a measurement procedure. Sorption and solubility testing is crucial, as water sorption can negatively affect the dimensional stability and mechanical properties of the material, impacting its long-term durability. Materials that absorb more water can show expansion and loss of strength, compromising their clinical performance. Minimum values expected by the ISO standardization of these tests are requirements in the development of more durable and reliable materials.
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Copyright (c) 2024 Geovanna de Castro Bizarria, Sarah de Araújo Mendes Cardoso, Carolina Cardoso de Araujo, Álefi Marques Lopes da Silva, Wglanna Kellen de Maria Silva Costa, Nicollas Gabriel de Carvalho Lima, Ousanas Wesllen Macedo da Costa, Maria Sarah Teresa Lima Verde Moura, Marine Olmos Villagomez, Maria do Amparo Veloso Magalhães, Cícera Andreza Alves dos Santos, Egídia Maria Moura de Paulo Martins VieiraAuthor(s)
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Geovanna de Castro Bizarria
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Sarah de Araújo Mendes Cardoso
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Carolina Cardoso de Araujo
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Álefi Marques Lopes da Silva
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Wglanna Kellen de Maria Silva Costa
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Nicollas Gabriel de Carvalho Lima
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Ousanas Wesllen Macedo da Costa
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Maria Sarah Teresa Lima Verde Moura
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Marine Olmos Villagomez
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Maria do Amparo Veloso Magalhães
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Cícera Andreza Alves dos Santos
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Egídia Maria Moura de Paulo Martins Vieira