Özet:

Purpose: This study assessed the effect on the smoothness and connectivity of the metal brakes created on the surface by different smoothness methods applied to different composite surfaces (direct and indirect). Tools and Methods: In our work we used 2 different types of composite disks and drawn undercut teeth, directly and indirectly. In order to create composite groups, a total of 120 sample disks were prepared, including 60 of each of the direct and indirect composites, and a control group with 15 subcutaneous tooth samples was added to these groups. The composite disks were divided into 4 subgroups, so that there will be 15 samples in each group according to the different purification methods to be applied. These groups were identified as the control group of ortophosphoric (OF) acid, steam, freezle purification and no processing. The surface of the tooth was applied aside. The smoothness of all composite disks was measured before and after the surface was smooth with the profilometer device. After the brakes were attached, the surfaces applied in the thermal cycle were submitted to the masking test. The surface changes were studied by a stereomicroscope and a scanner electron microscope (SEM). For statistical assessment, two-way variance analysis (ANOVA), Tukey HSD and Wilcoxon signed rank tests were used. Results: In the compounded direct composite groups, the smoothness values were significantly lower than in the indirect group, while the statistical differences between the direct and indirect composite types for other compounding methods (OF acid, frez) were not found (p>0.05). The freeze method showed the highest results in both the bonding resistance and smoothness values (p <0.05). The SEM surface analysis also supported these findings. Results: The results of our study as in-vitro showed that the application of freez is an effective and reliable method in the purification of composite surfaces in orthodontics.

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