Fourier-Transform Infrared Spectroscopy Analysis of 3D-Printed Dental Resins Reinforced with Yttria-Stabilized Zirconia Nanoparticles
<b>Background/Objectives:</b> This study investigates the chemical structure and molecular interactions in 3D-printed dental resins reinforced with varying concentrations of Yttria-Stabilized Zirconia (YSZ) nanoparticles, using Fourier-Transform Infrared Spectroscopy (FTIR) to assess the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Dentistry Journal |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6767/13/6/272 |
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| Summary: | <b>Background/Objectives:</b> This study investigates the chemical structure and molecular interactions in 3D-printed dental resins reinforced with varying concentrations of Yttria-Stabilized Zirconia (YSZ) nanoparticles, using Fourier-Transform Infrared Spectroscopy (FTIR) to assess the compatibility and bonding behavior at the molecular level. <b>Methods:</b> Three groups of 3D-printed methacrylate-based resin discs were fabricated: a control (0% YSZ), and experimental groups reinforced with 1% and 3% YSZ nanoparticles. Samples were produced using Digital Light Processing (DLP) technology and post-processed under standardized conditions. FTIR spectra were collected via ATR mode over a wavenumber range of 4000–600 cm<sup>−1</sup>. Spectral differences at key wavenumbers (1721.16, 1237.11, and 929.62 cm<sup>−1</sup>) were statistically analyzed using one-way ANOVA and Tukey’s post hoc test. <b>Results:</b> FTIR spectra showed no significant shifts in the ester carbonyl band at 1721.16 cm<sup>−1</sup>, suggesting the preservation of the core resin matrix. However, a statistically significant increase in absorbance at 1237.11 cm<sup>−1</sup> was observed in the 1% YSZ group (<i>p</i> = 0.034), indicating dipolar interaction. A distinct new peak at 929.62 cm<sup>−1</sup>, corresponding to Zr–O vibrations, emerged in the 3% YSZ group (<i>p</i> = 0.002), confirming successful nanoparticle integration. <b>Conclusions:</b> YSZ nanoparticles enhance specific molecular interactions within methacrylate-based dental resins without compromising structural integrity. These findings support the potential application of YSZ-reinforced 3D-printed resins in durable, biocompatible permanent dental restorations. |
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| ISSN: | 2304-6767 |