Abstract
Objetivo: este trabalho teve como objetivo analisar a composição, a morfologia e o tamanho dos cristais de dióxido de zircônio de cinco marcas comerciais de zircônias Y-TZP odontológicas. Material e Métodos: os materiais avaliados, Cercon (Dentsply); Katana (Kuraray Noritake Dental Inc.), Lava (3M ESPE); Vita In-Ceram (Vita Zahnfabrik) e IPS e.max ZirCAD (Ivoclar Vivadent) foram investigados quanto à composição e morfologia/tamanho dos cristais utilizando as análises de energia dispersiva de raios-X e microscopia eletrônica de varredura, respectivamente (n = 5). Resultados: o elemento químico zircônio foi identificado em todos os materiais e os cristais mostraram diferentes modos de aglomeração e tamanhos que variaram de 0,1 a 0,5 ?m. Conclusão: as zircônias não apresentaram diferenças composicionais, mas a morfologia e tamanho dos cristais variaram dependendo do tipo de zircônia.
Highlights
Objective: the objective of this study was to analyze the composition, morphology and size of dental zirconium dioxide crystals of five commercial brands of YTZ-P dental zirconias
Results: the zirconium chemical element was identified in all materials and the crystals showed different clustering modes and sizes that varied between 0.1 and 0.5 μm
Conclusion: the zirconia ceramics did not present compositional differences, but the morphology and size of crystals varied depending on the type of zirconia
Summary
Objective: the objective of this study was to analyze the composition, morphology and size of dental zirconium dioxide crystals of five commercial brands of YTZ-P dental zirconias. Elementos identificados pela análise de energia dispersiva de raios-X para as zircônias Cercon (1a), Katana (1b), Lava (1c); Vita In-Ceram Zirconia (1d) e IPS e.max ZirCAD (1e)
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