Al-Rafidain Dental Journal (May 2024)

Surface Hardness and Fourier Transform Infrared Spectroscopical Characterization of Bioactive Modified Chairside Hard Denture Reliner

  • Rana R. Aziz,
  • Mohammed M. Sadoon

DOI
https://doi.org/10.33899/rdenj.2024.147310.1249
Journal volume & issue
Vol. 24, no. 1
pp. 231 – 247

Abstract

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Aims: The study seeks to investigate the hardness and chemical structure of the MWCNTs-Nanonystatin-modified hard chairside denture reliner after nanosizing nystatin macromolecules to be conjugated with MWCNTs for loading into chairside hard denture reliners. Materials and Methods: The examined material was chairside hard denture reliner (CHDR) (Rebase II). Tokuyama®. Japan. The nano additives applied were Nystatin (Nys). SDI (Samirraa’ Drugs, Iraq) and Multiwalled carbon nanotubes (MWCNT, 95%, VCN materials). Chairside relining material was manufactured following the manufacturers' specifications. Surface hardness was tested using a shore D durometer tester, while FTIR Spectroscopy was conducted using an IRAFFINITY-1S-FTIR spectrophotometer (SHIMADZU, Japan). The chairside hard denture reliner specimens were divided into (a control group,5 specimens) and a modified chairside hard denture reliner (MWCNTs-Nys- CHDR at 0.025%, 0.05%, and 0.1% by weight, 5 specimens for each group). The CHDR specimens have dimensions of 10×10×3.3 ±0.2mm. Total number of samples in this study was 40 samples. Results: The bioactive modification of CHDR resulted in increased hardness without changing the chemical structure of the materials in comparison to the control group. Conclusions: The bioactive modification of CHDR led to improved hardness, without any chemical modifications.

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