| Autor: |
Lokota, Yuriy, Paliichuk, Ivan, Paliichuk, Volodymyr, Goncharuk-Khomyn, Myroslav |
| Předmět: |
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| Zdroj: |
Journal of International Dental & Medical Research; 2020, Vol. 13 Issue 2, p422-429, 8p |
| Abstrakt: |
Objective of the research was to verify the validity of spectroscopic approach for clinical control of denture base acrylics polymerization during quality assurance check-up after laboratory manufacturing phase. 15 samples with 1 mm thickness 5 mm width and 10 mm length of four different denture acrylic resins were prepared due to the manufacturer's protocols of polymerization. Spectroscopic analysis was held with the use of Monochromator MDR-204 supplied with the light filters, sample holder, optosensor and gage system of signal intensity on the photodetector. During the comparison of the light transmission spectrums among all the tested acrylic resins after their complete polymerization specific regions were noted with practically stable transmittance values, that could serve not only for the identification of material used for denture base manufacturing, but also for the evaluation of polymerization process completeness. These intervals for "Ftorax" and "Villacryl H plus" correspond to the wavelength range of 530-685 nm, and for "Sinma-M" and "Redont-colir" to the wavelength range of 560-680 nm. Absorption curves of tested acrylic resins after 45 minutes of polymerization differed significantly, especially in the wavelength range of 400-570 nm (p<0.05). Due to the obtained results and registered statistical relationships it can be resumed that proposed approach of spectroscopic analysis could be effectively used for clinical control of denture base acrylics polymerization during quality assurance check-up. But such quality assessment could be provided only in the means of correspondence to the specific spectral dependencies and patterns of transmission and absorption coefficients, such as linearity trend sections, extremums at discriminant wavelength ranges, distinctive fluctuations after different polymerization time periods at targeted wavelengths. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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