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<p>Effective disinfection of dental impression materials is essential for the safety of both dental professionals and patients. This study evaluated the impact of UVC radiation (18×2 W, 254 nm) and chemical sanitizers on the mechanical properties of dental elastomers using ASTM D575 compression testing. Results showed that the untreated elastomer exhibited the ultimate load (6835.5 N) and displacement (7 mm). UVC-treated elastomers maintained comparable properties (ultimate load: 7575 N, displacement: 7 mm, p = 0.125), indicating minimal impact on mechanical properties. In contrast, chemically treated elastomers showed reduced ultimate load (6145.8 N) and displacement (7 mm, p = 0.082), suggesting material degradation due to polymer matrix disruption. While the p-values indicate trends rather than statistical significance, the findings suggest UVC sterilization is a promising method for preserving mechanical properties while ensuring effective disinfection of dental impression materials, and more future analysis is recommended.</p>

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Effects of ultraviolet and chemical sterilization on the mechanical properties of elastomeric dental impression materials: An ASTM D575 analysis

  • 期刊论文

  • 发表日期：

    2025年8月4日

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  • Mohamed A. Aboamer

摘要

Effective disinfection of dental impression materials is essential for the safety of both dental professionals and patients. This study evaluated the impact of UVC radiation (18×2 W, 254 nm) and chemical sanitizers on the mechanical properties of dental elastomers using ASTM D575 compression testing. Results showed that the untreated elastomer exhibited the ultimate load (6835.5 N) and displacement (7 mm). UVC-treated elastomers maintained comparable properties (ultimate load: 7575 N, displacement: 7 mm, p = 0.125), indicating minimal impact on mechanical properties. In contrast, chemically treated elastomers showed reduced ultimate load (6145.8 N) and displacement (7 mm, p = 0.082), suggesting material degradation due to polymer matrix disruption. While the p-values indicate trends rather than statistical significance, the findings suggest UVC sterilization is a promising method for preserving mechanical properties while ensuring effective disinfection of dental impression materials, and more future analysis is recommended.