Chemical, optical, and morphological properties of TPU and PET-G samples after aging in artificial saliva: an in vitro study

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BMC Oral Health. 2025 Apr 11;25(1):533. doi: 10.1186/s12903-025-05863-0. ABSTRACT BACKGROUND: Thermoplastic materials, such as glycol-modified polyethylene terephthalate (PET-G) and thermoplastic polyurethane (TPU), undergo alterations due to environmental factors in the oral cavity, which can affect their composition and surface properties over time. While previous studies have explored these changes, a comprehensive characterization of TPU and…