Avaliação dos procedimentos de polimento em resinas compostas por meio de diferentes sistemas de polidores

Abstract

The finishing and polishing influence the surface quality of the composite resin, so it is believed that these are fundamental issues for the success of a direct restoration. When they are performed improperly, they can result in changes in the surface, increase of the index and accumulation of plaque, compromising the final result in the short and long term, as well as integrity of the tissues around. Therefore, the aim of this research is to evaluate the surface roughness of different composite resins under different polishing procedures, thus being able to define the best polishing protocol for the different resins. The materials used were: composite resins (Palfique - Tokuyama, Z350 - 3M ESPE, Aura - SDI, Herculite Précis - Kerr and Vittra - FGM) and polymers (Opti1step - Kerr, Sof-lex Pop-on - 3M ESPE and Foto'Cept - Ceptiom). Thirty samples were prepared for each type of composite resin, these samples were randomly distributed to perform the three different types of polishing (n = 10). For the preparation of the samples, a guide matrix made of silicone by addition was used, containing a cavity of 3 mm in diameter and 2 mm in thickness. For each group of samples the finishing and polishing procedures was done, with different polishing systems according to the manufacturers' recommendations. Prior to the polishing, the samples were sprinkled with the Sof-lex Pop-on thick granulation disc making a standard out of the surface finishing of all the samples. After polishing them all, the surface roughness analysis was performed using the 3D Laser Measurement Microscope. The analysis of the data generated by microscopy was performed quantitatively through statistical. The composite resins tested presented different values of roughness depending on the material used in the polishing. Based on the results obtained, we can conclude that: Z350 resin presented less roughness using the Foto'cept and Opti1step polymers, Palify less roughness with Sof-lex Pop-on, Herculite Précis with Foto'cept and Soflex Pop-on, Vittra with Sof-lex Pop-on and Aura resin presented less roughness with Sof-lex Pop-on and Opti1step polymers.