NCJ Number
196329
Journal
Journal of Forensic Sciences Volume: 47 Issue: 4 Dated: July 2002 Pages: 831-836
Date Published
July 2002
Length
6 pages
Annotation
This paper describes the use of quantitative light-induced fluorescence (QLF) to identify composite restorations in forensic examinations.
Abstract
Increased public demand for more aesthetic dental restorations causes a potential problem for forensic dentists who may find the fillings difficult to identify and hence include in postmortem odontograms. The paper presents a new method to detect composite restorations. Quantitative Light-induced Fluorescence (QLF) is used to detect small changes in enamel mineral content. An experiment was conducted to determine if the technique would afford a greater degree of contrast between composite and enamel. Twenty-four previously extracted human premolars were gently cleaned with pumice and wet-and-dry paper. Twelve were subsequently randomly selected and restored on their buccal surfaces with Spectrum (a composite) following manufacturer's instructions. No attempt was made to color match the teeth and 12 were left unrestored. QLF and normal white light images were taken of both restored and non-restored surfaces with teeth wet and then dried. Ten forensic dentists were asked on two occasions 1 month apart to indicate whether they thought the surface was restored or unrestored. Forensic dentists detected a significantly higher proportion of filled surfaces with QLF. Figures, tables, references