Masterarbeit, 2012
96 Seiten, Note: A
This study aims to compare the physical and mechanical properties of a new low viscosity commercial flowable composite (Vertise Flow) with other flowable composites (Grandio Flow and Premise Flowable) currently available on the market. The research investigates water absorption, depth of cure, degree of conversion, and polymerization exotherm of these materials.
Chapter 1: Introduction introduces the concept of flowable composites, highlighting their low viscosity and properties. It discusses the advantages and disadvantages of these materials, particularly their lower filler loading which leads to greater polymerization shrinkage and reduced mechanical properties.
Chapter 2: Literature Review delves into the composition and structure of dental composites. It explores the various components, including the resin/organic matrix, filler, coupling agent, initiators, and accelerators. This chapter also covers different classifications of composites, the polymerization reaction, and a detailed examination of physical and mechanical properties like working and setting time, polymerization shrinkage, thermal properties, water sorption, solubility, color stability, strength, modulus, hardness, and bond strength. The chapter concludes by discussing clinical properties like depth of cure, radiopacity, and wear rates of light-cured composites.
Flowable composites, Vertise Flow, Grandio Flow, Premise Flowable, water absorption, depth of cure, degree of conversion, polymerization exotherm, dental materials, physical properties, mechanical properties, clinical properties.
They are low-viscosity dental materials designed to flow easily into cavity preparations, providing better adaptability to cavity walls compared to hybrid composites.
The study aimed to compare the physical and mechanical properties of Vertise Flow with other market competitors like Grandio Flow and Premise Flowable.
The study found that Vertise Flow showed increased water uptake in both distilled water and artificial saliva compared to the other tested materials.
Their lower filler loading often results in greater polymerization shrinkage and reduced mechanical strength compared to high-viscosity composites.
The presence of HEMA was linked to higher water uptake, a higher polymerization exotherm, and a lower depth of cure in the Vertise Flow samples.
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