{"title":"Fourier-Transform Infrared Spectroscopy Analysis of 3D-Printed Dental Resins Reinforced with Yttria-Stabilized Zirconia Nanoparticles.","authors":"Andrea Izabella Borș","doi":"10.3390/dj13060272","DOIUrl":null,"url":null,"abstract":"<p><p><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.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 6","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12192065/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dentistry Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/dj13060272","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
Background/Objectives: 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. Methods: 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-1. Spectral differences at key wavenumbers (1721.16, 1237.11, and 929.62 cm-1) were statistically analyzed using one-way ANOVA and Tukey's post hoc test. Results: FTIR spectra showed no significant shifts in the ester carbonyl band at 1721.16 cm-1, suggesting the preservation of the core resin matrix. However, a statistically significant increase in absorbance at 1237.11 cm-1 was observed in the 1% YSZ group (p = 0.034), indicating dipolar interaction. A distinct new peak at 929.62 cm-1, corresponding to Zr-O vibrations, emerged in the 3% YSZ group (p = 0.002), confirming successful nanoparticle integration. Conclusions: 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.