Evaluation of the effects of temperature and centrifugation time on elimination of uncured resin from 3D-printed dental aligners

Autor:	Ji-Eun Kim, Utkarsh Mangal, Jae-Hun Yu, Gi-Tae Kim, Hoon Kim, Ji-Young Seo, Jung-Yul Cha, Kee-Joon Lee, Jae-Sung Kwon, Sung-Hwan Choi
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Centrifugation Uncured resin Clear aligner 3D printing Cytocompatibility Translucency Medicine Science
Zdroj:	Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Druh dokumentu:	article
ISSN:	2045-2322
DOI:	10.1038/s41598-024-66150-6
Popis:	Abstract The study investigated the effects of temperature and centrifugation time on the efficacy of removing uncured resin from 3D-printed clear aligners. Using a photo-polymerizable polyurethane resin (Tera Harz TC-85, Graphy Inc., Seoul, Korea), aligners were printed and subjected to cleaning processes using isopropyl alcohol (IPA) or centrifugation (g-force 27.95g) at room temperature (RT, 23 °C) and high temperature (HT, 55 °C) for 2, 4, and 6 min. The control group received no treatment (NT). Cleaning efficiency was assessed through rheological analysis, weight measurement, transparency evaluation, SEM imaging, 3D geometry evaluation, stress relaxation, and cell viability tests. Results showed increased temperature and longer centrifugation times significantly reduced aligner viscosity, weight (P
Databáze:	Directory of Open Access Journals
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