Análise bioquímica das alterações salivares relacionadas à adaptação funcional de pacientes usuários de próteses totais

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2014-12-18

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Universidade Federal de Goiás

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Complete dentures represent the main treatment for total edentulism in the overall population. However this type of treatment can lead to the onset of physiological and functional alterations during the adaptative period after the installation of the denture. The objective of this work was to evaluate modifications in biochemical parameters (nitric oxide and cortisol levels) in complete denture user's saliva and verify its association with clinical parameters like levels of functional adaptation, trauma, salivary flux, and viscosity. Nineteen totally toothless patients in need of installation or substitution of dentures were selected and evaluated during the installation, adaptation and in the post-adaptation period. The protocol for making the complete dentures followed clinical and laboratory procedures. The nitric oxide concentration dosage was performed via the Griess reaction, where the measurement taken is the nitrite concentration, since nitric oxide is very unstable and rapidly transforms into nitrite. The points for construction of the calibration curve were made in triplicate using the nitrite concentration, which varied from 5 to 150 μM, wherein for each analyzed plate a new curve was built. The salivary cortisol concentration was performed using Salimetrics No. 1-3002 (single) enzymatic kit. A descriptive statistical analysis was done for representation of summary measures of the variables measured. Non-parametric tests (Friedman, Wilcoxon, Mann-Whitney and Kruskal-Wallis tests) were used for group comparison. Salivary nitric oxide levels were quantified for each evaluation period and correlated between themselves, showing statistically significant differences among them. The adaptative periods showed a decrease in nitric oxide levels between installation and post-installation. There were no significant differences in correlations between salivary nitric oxide concentrations and levels of functional adaptation, trauma, salivary flux and viscosity. The salivary cortisol levels were evaluated at two periods, in the post-adaptative and after some months of denture use, showing great variation at the first period and stabilization at the second. There was no significant difference when correlated to the levels of functional adaptation and trauma. It was concluded that the prosthetic treatment caused alterations in salivary nitric oxide and cortisol levels during adaptation to dentures however these levels came back to normal after that period.

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BRESEGHELO, M. L. Análise bioquímica das alterações salivares relacionadas à adaptação funcional de pacientes usuários de próteses totais. 2014. 79 f. Tese (Doutorado em Ciências da Saúde) - Universidade Federal de Goiás, Goiânia, 2014.