Treatment effectiveness evaluation of dental caries as a factor affecting patients’ quality of life

Background: The study of the patient’s quality of life is an important condition for assessing the effectiveness of the treatment and the clinical condition of patients after treatment, in addition to objective diagnostic methods. The purpose of the study was to investigate the dynamics of changes in the quality of life of dental patients suffering from caries of the contact areas of the lateral group of teeth, after treatment in accordance with the established plan for the use of various matrix systems, in the study groups. Material and methods: The study involved 147 patients: 48 patients of the 1st experimental group; 54 patients of the 2nd experimental group; 45 patients of the 3rd experimental group. Results: In the course of the study, it turned out that such a criterion as the quality of life is an informative dynamic indicator, the value of which depends on the method of treatment used. Conclusions: In the course of the study, the effectiveness of the use of a separation-retaining device for the restoration of the lateral group of teeth during the treatment of caries in the contact areas of the teeth was assessed as a factor influencing the quality of life of patients.

TREATMENT EFFECTIVENESS EVALUATION OF WASTEWATER FROM INDUSTRIAL FRIED CHICKEN RE- PROCESSING PROCESSES BY ADVANCED OXIDATION PROCESSES

The experiment was conducted by using ozone and graphite electrodes to treat wastewater from industrial fried chicken re-processing peocesses with COD value ranges of 1600 - 2000 mgO2/L. A chamber of 20 liters was used in this study. The chamber height was 1 meter (the high response of 50-60 cm) in order to increase the diffusion of ozone into the wastewater. The study results showed that the amount of ozone needed for the reaction is 300 mg/h with COD removal efficiency of 40 % during reaction time of 45-60 minutes.The rate of BOD/COD increased within 1.55 - 1.80 times as compared with the BOD/COD rate of the initial wastewater. The experiments also showed that the COD removal efficiency of wastewater was not affected much by the pH value of the wastewater.