Surface Roughness and Microhardness of Composite Resin Reinforced by Titanium Nanotubes: Review of Applications Using Hydrothermal Method
DOI:
https://doi.org/10.21270/archi.v12i3.6117Keywords:
Composite Resins, Surface Properties, NanotubesAbstract
Composite resins differ in their inorganic components in terms of particle type, size and weight percentage depending on the composite. Larger particles are often associated with significant detachment from the matrix and, therefore, greater porosity of the restoration. Recently, the introduction of nanometer-sized particles in hybrid composites has allowed combining mechanical characteristics with an easier polishing procedure, resulting in lower surface roughness. It is known that the oral environment is the main responsible for the chemical degradation of composite resins, not only by the acids formed by the biofilm, which enhance the hydrolysis of the material with consequent alteration of the surface texture, but also by the forces of abrasion and compression, in addition to of the thermal alterations, responsible for the aging of the material. In such a steep and challenging environment, enhanced by the difference in hardness between the inorganic particles and the resin matrix, the surface smoothness of the composite resins, obtained immediately after finishing and polishing the restoration made, undergoes changes. A strategy to improve the properties of composite resins is the use of nanotechnology due to its potential to significantly modify the properties of the polymeric matrix. Titanium nanoparticles have some desirable properties such as: biocompatibility, stability in the oral environment, antimicrobial activity and can even increase the resistance of the material to masticatory efforts. The literature has suggested its incorporation into dental materials with the aim of assisting in the decontamination of materials used in the manufacture of restorations, thus contributing to infection control. Based on these considerations, the purpose of this work is to review the surface behavior of resins reinforced by titanium nanotubes obtained by the hydrothermal method.
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