Monitoring Dental Zinc Oxide Polyacrylate Cement Using Near-Infrared Spectroscopy

• DOI: 10.1007/s10921-025-01185-x
• Publication Date: 2025-04-25T23:59:39Z
• Authors: Yuta Otsuka; Tadahiro Higashin...; Hiroshi Kono; Masafumi Kikuchi
• Keywords: Dental cement

Abstract This study aims to investigate the reaction kinetics of polycarboxylate cements using NIR spectroscopy with chemometrics. To achieve 100% inspection of medical devices and drugs, it is desirable to develop non-destructive, non-contact quality control methods. One effective method for this is chemometrics, which uses near-infrared spectroscopy and chemometrics. A dental cement, polycarboxylate cement, was prepared, and the spectral changes from 1 min to 15 min were observed using NIR spectroscopy. The obtained spectra were evaluated by two-dimensional correlation spectroscopy. Carboxylate changes in the cement were analyzed using principal component analysis, and a score plot against loadings and time was shown. It was suggested that the hardening mechanism of cement can be plotted as a pseudo-first-order reaction.