Autofluorescence spectra and image to differentiate restorative dental resins from the tooth

Seung-Yong Song; Jeong-Kil Park; Yong Hoon Kwon; Franklin Garcia-Godoy

Autofluorescence spectra and image to differentiate restorative dental resins from the tooth

Am J Dent. 2022 Oct;35(5):263-267.

Authors

Seung-Yong Song¹, Jeong-Kil Park¹, Yong Hoon Kwon², Franklin Garcia-Godoy^{3

4}

Affiliations

¹ Department of Conservative Dentistry, School of Dentistry, Pusan National University, Pusan, Korea.
² Department of Dental Materials, School of Dentistry, Pusan National University, Pusan, Korea.
³ Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA, fgarciagodoy@gmail.com.
⁴ The Forsyth Institute, Cambridge, Massachusetts, USA.

PMID: 36261407

Abstract

Purpose: To compare the autofluorescence (AF) spectra of resin products with teeth to determine if this type of non-invasive testing is feasible for differentiating resin products from teeth during resin repair.

Methods: For the study, 11 methacrylate-based resin products were chosen. A 405 nm laser was used to induce AF, and a spectrophotometer and a qualitative laser-induced fluorescence (QLF) camera were used to obtain AF spectra and images, respectively.

Results: Resin products and teeth showed one or two emission peak(s) at 435-465 nm and 475-480 nm, respectively. Other resin constituents produced weak emission peaks beyond the 435-475 nm range. Resin products with high emission intensities produced bright images. When layered, surface resins (0.2 mm-thick) were different from underlying base resins and teeth.

Clinical significance: During resin repair, a restored resin can be readily removed if AF spectroscopy is used alone or in combination with QLF imaging.

MeSH terms

Composite Resins* / chemistry
Dental Restoration, Permanent / methods
Methacrylates / chemistry
Tooth*

Substances

Composite Resins
Methacrylates