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Non-destructive evaluation of teeth restored with different composite resins using synchrotron based micro-imaging.
A Fatima1, V K Kulkarni2, N R Banda2
1UGC- DAE Consortium for Scientific Research, University Campus, Indore (M.P.), India.
Journal of X-Ray Science and Technology
|February 19, 2016
Summary
High-resolution synchrotron micro-imaging revealed fewer defects in nano-hybrid resin dental restorations compared to submicron hybrid ones. This advanced imaging technique aids in assessing the quality of dental restorative materials.
Area of Science:
- Dental materials science
- Biomedical imaging
- Materials characterization
Background:
- High-resolution synchrotron micro-imaging offers advanced capabilities for studying microdefects in restored dental samples.
- Understanding material interfaces and defect formation is crucial for improving dental restoration longevity.
Purpose of the Study:
- To compare defects in dental restorations created by two different resin systems using synchrotron-based micro-imaging techniques.
- To evaluate the efficacy of Phase Contrast Imaging (PCI) and micro-computed tomography (MCT) for defect analysis.
- To compare the image quality obtained from synchrotron techniques with conventional Radiovisiography (RVG).
Main Methods:
- Human teeth samples were fractured and restored with either a submicron Hybrid composite (Group A) or a Nano-Hybrid composite (Group B).
- Synchrotron-based Phase Contrast Imaging (PCI) and micro-computed tomography (MCT) were employed to visualize the tooth structure, restorative material, and their interface.
- Image analysis focused on identifying and quantifying voids and other defects at the material interface.
Main Results:
- Quantitative and qualitative comparisons of PCI and MCT images revealed a significantly higher number of voids in Group A (submicron Hybrid) restorations.
- Absorption contrast images also corroborated the presence of more defects in Group A compared to Group B.
- Synchrotron imaging provided detailed visualization of the microstructural integrity of the restorations.
Conclusions:
- Nano-Hybrid resin restorations (Group B) demonstrate superior quality with fewer microdefects compared to submicron Hybrid restorations (Group A).
- Synchrotron-based micro-imaging techniques, including PCI and MCT, are effective tools for the quality assessment of dental restorations.
- The findings suggest that Nano-Hybrid materials are a preferable choice for dental restorations requiring high structural integrity.
Keywords:
Phase contrast imaging (PCI)composite resindental restorationedge enhancementmicro computed-tomography (MCT)
