Optimized Approach of Dental Composites Identification with The Use of Original Spectrophotometric Algorithm

Kostenko S；Dzupa P；Levandovskyi R；Bun Y；Mishalov V；Goncharuk-Khomyn M

composite ； spectrophotometric evaluation ； identification ； quality of material

Journal of International Dental and Medical Research

11卷2期（2018 / 07 / 01）

403 - 408

英文

The formation and development of the different dental markets and services, as well as numerous organizations with different forms of ownership, provoke the occurrence of quality control problem of various dental materials used in practice. Objective of research was to develop a method for the primary identification of changes in physical properties of photopolymer composite materials in comparison with features of reference samples, registered by the method of spectrophotometry. At the first stage of research official distributed composite syringes shades A1, A2 and A3 of different brands were collected. Prepared samples of investigated materials were placed inside spectrophotometer SF-2000, and indicators of absorption, transmission and reflection of light in the range of waves from 350 to 850 nm were recorded. At the second stage composite syringes of the same manufacturers and shades as in the first stage were collected, but without control of their official distribution. Subsequently, a comparison of the results of the study samples and reference database samples was performed in the adapted software. 96 experimental samples (83,48%) corresponded to the parameters previously registered in formed database of absorption, transmission and reflection in the range of 92,5-96,7% concordance (P＜0.05), 10 study samples (8,69%) corresponded to the reference values of 61,8-65,2% concordance (P＜0.05), 9 study samples (7,83%) corresponded to the reference values of 33,5-45,6% concordance (P ＜0.05). During analysis it was found that results of comparison transmission and reflective coefficients among reference and study samples were the closest at wavelength range of 550-600 nm and 800- 850 nm. Proposed approach helps to prevent the use of composite materials with non-sufficient physical properties registered by spectrophotometric method, samples of which could be presented at the grey market and objectively non attributed to any manufacture's brand.