Forensic applications: Fluorescence properties of tooth-coloured restorative materials using a fluorescence DSLR camera.
The objective of this study was to compare the fluorescence properties of dry and wet samples of contemporary tooth-coloured restorative materials using a fluorescence based DSLR camera and a variety of LEDs emitting different wavelengths of visible light as excitation sources. The materials examine...
| Published in: | Forensic Science International Vol. 273; pp. 20 - 29 |
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| Main Authors: | , , , , |
| Format: | research Journal Article |
| Published: |
Elsevier B.V.
Apr2017
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=121935858&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121935858 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03790738 3L0 jtl: Forensic Science International issn: 03790738 maglogo: N pubinfo: dt: Apr2017 vid: 273 pid: 82545 pub: Elsevier B.V. place: Philadelphia, Pennsylvania artinfo: ui: 121935858 121935858 NLM28213184 121935858 10.1016/j.forsciint.2017.01.022 NLM28213184 121935858 ppf: 20 ppct: 9 formats: tig: atl: Forensic applications: Fluorescence properties of tooth-coloured restorative materials using a fluorescence DSLR camera. aug: au: Kiran, Ramya Walsh, Laurence J. Forrest, Alexander Tennant, Marc Chapman, James affil: School of Health, Medical and Applied Sciences, Central Queensland University, Bruce Highway, Rockhampton 4701, Australia sug: subj: Color Light Dental Cements Dental Restoration, Permanent Forensic Dentistry Software Human ab: The objective of this study was to compare the fluorescence properties of dry and wet samples of contemporary tooth-coloured restorative materials using a fluorescence based DSLR camera and a variety of LEDs emitting different wavelengths of visible light as excitation sources. The materials examined included resin composites; ceramics and hybrid restorative materials such as ormocers, Vita Enamic™ and resin reinforced glass-ionomer cements. The levels of fluorescence for each sample under different combinations of incident light wavelengths and filters was analysed by using histogram data for colour channels from Adobe Photoshop software. Fluorescence patterns were influenced by water sorption of the materials. UV-A/Violet light (405±nm) produced the greatest range of luminosity values (10-204) amongst the tooth-coloured restorative materials, and showed the greatest differences between restorations and tooth structure. The best filter combinations with violet light were orange or yellow filters. Under ultraviolet excitation, Fuji VIII A2 exhibited a unique bright pink fluorescence emission, while VitaEnamic™, ormocer and glass-ionomer cements emitted bluish-pink fluorescence emissions. In conclusion, restorative materials exhibited varied emission pattern under UV-A (405nm) light, which enables their detection and differentiation from natural tooth structure. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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