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KMID : 0362120210430040145
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Journal of Technologic Dentistry
2021 Volume.43 No. 4 p.145 ~ p.152
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Component and surface residue observation of barrel finishing media for grinding dental resins
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Jung An-Na
Park Yu-Jin
Choi Sung-Min
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Abstract
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Purpose: This study aimed to produce resin prosthetics using a dental barrel finishing ma-chine. For dental resin grinding, the ingredients of the barrel finishing media were analyzed, and surface residues of the resin were observed.
Methods: Two types of barrel finishing media for dental resin grinding were tested. Speci-mens were made from thermal polymerized, auto polymerized, and photopolymerized res-ins. Finishing media were analyzed through energy-dispersive X-ray spectroscopy (EDS) component analysis and inductively coupled plasma-optical emission spectrometry (ICP-OES) component analysis. Then, the prepared specimen was barrel finished for 25 minutes using two types of barrel finishing media, and scanning electron microscope was photo-graphed to observe the surface residues.
Results: As a result of EDS component analysis, both types of finishing media were ana-lyzed for the components of C, O, Zr and Al elements, and industry media (IM) was further analyzed for the components of Si and Mg elements. In the ICP-OES component analysis, Cd and As, which are harmful elements, were detected in IM, and no harmful elements were detected in manufacturing media (MM). Because of observation of surface residues, no residues were observed in the three types of resin specimens that were barrel finished with two types of finishing media.
Conclusion: Surface residue wasn’t observed on the specimens polished using two types of finishing media. However, in IM, Cd and As, which are harmful elements, were detected, making it inappropriate for clinical use. In MM, harmful elements were not detected; there-fore, clinical use will be possible.
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KEYWORD
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Barrel finishing, Energy-dispersive X-ray spectroscopy, Inductively coupled plas-ma-optical emission spectrometry, Media, Resin, Scanning electron microscope
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