[P一般-088] The research of surface degradation effects of carbonated soft drinks on elderly's resin-based removable denture
Aim:
Dental compounds and restorative materials, especially the elderly's removable denture, may undergo surface degradation and erosion from exposure to a variety of dietary substances. In this study we investigated changes in the surface properties of Rebaron, a hard denture reline material (HDRM), following timed immersion in carbonated soft drinks to determine its durability in a common acidic environment.
Methods:
Samples were prepared and immersed in a carbonated soft drink (or its components) for 6, 12, or 24 h. Surface structure and mechanical properties were characterized using Atomic Force Microscopy (AFM). Raman spectroscopy was used to identify changes in the HDRM surface chemistry following exposure to the test solutions. SPSS version 12.0(Endicott, NY, USA) and one-way ANOVA test was used for analysis.
Results:
AFM revealed that prolonged exposure led to pit formation and a subsequent increase in surface roughness, from 302.02 ± 30.20 to 430.59 ± 15.07 nm Ra, following a 24 h exposure. Young's modulus values decreased from 9.3 ± 7.0 to 0.53 ± 0.26 GPa under the same conditions, demonstrating a softening and embrittlement of the HDRM sample. Raman results revealed that immersion in the carbonated soft drink or acidic solution changed the nature of the HDRM structure, converting the HDRM surface chemistry from primarily hydrophobic to hydrophilic.
Conclusion:
Our study results indicates that the sustainability and durability of Rebaron (HDRM) are significantly reduced by prolonged exposure to carbonated (acidic) soft drinks, resulting in deformation and degradation of the material surface. This research can be used as an advanced strategy and process to provide characterization, diagnosis and improvement of denture materials for commercial use.
Author declares no conflict of interest
Dental compounds and restorative materials, especially the elderly's removable denture, may undergo surface degradation and erosion from exposure to a variety of dietary substances. In this study we investigated changes in the surface properties of Rebaron, a hard denture reline material (HDRM), following timed immersion in carbonated soft drinks to determine its durability in a common acidic environment.
Methods:
Samples were prepared and immersed in a carbonated soft drink (or its components) for 6, 12, or 24 h. Surface structure and mechanical properties were characterized using Atomic Force Microscopy (AFM). Raman spectroscopy was used to identify changes in the HDRM surface chemistry following exposure to the test solutions. SPSS version 12.0(Endicott, NY, USA) and one-way ANOVA test was used for analysis.
Results:
AFM revealed that prolonged exposure led to pit formation and a subsequent increase in surface roughness, from 302.02 ± 30.20 to 430.59 ± 15.07 nm Ra, following a 24 h exposure. Young's modulus values decreased from 9.3 ± 7.0 to 0.53 ± 0.26 GPa under the same conditions, demonstrating a softening and embrittlement of the HDRM sample. Raman results revealed that immersion in the carbonated soft drink or acidic solution changed the nature of the HDRM structure, converting the HDRM surface chemistry from primarily hydrophobic to hydrophilic.
Conclusion:
Our study results indicates that the sustainability and durability of Rebaron (HDRM) are significantly reduced by prolonged exposure to carbonated (acidic) soft drinks, resulting in deformation and degradation of the material surface. This research can be used as an advanced strategy and process to provide characterization, diagnosis and improvement of denture materials for commercial use.
Author declares no conflict of interest