Performance assessment of novel side firing flexible optical fibers for dental applications

George, Roy and Walsh, Laurence J. (2009) Performance assessment of novel side firing flexible optical fibers for dental applications. Lasers in Surgery and Medicine, 41 3: 214-221. doi:10.1002/lsm.20747

Author George, Roy
Walsh, Laurence J.
Title Performance assessment of novel side firing flexible optical fibers for dental applications
Journal name Lasers in Surgery and Medicine   Check publisher's open access policy
ISSN 0196-8092
Publication date 2009-03-01
Sub-type Article (original research)
DOI 10.1002/lsm.20747
Volume 41
Issue 3
Start page 214
End page 221
Total pages 8
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Formatted abstract
Background and Objective: Use of lasers in dentistry in root canals of teeth and in periodontal pockets for disinfection would be more effective if energy was delivered laterally. This study examined the energy emission profiles of fibers modified in various ways to enhance their lateral emissions for dental use. Materials and
Methods: Commercial optical fibers were altered by tube etching with hydrofluoric acid, modified tube etching (after removing the protective polyimide coating), alumina abrasive particle beams, and by etching and particle beams used in combination. Three freerunning pulsed infrared lasers (Nd:YAG, Er:YAG, and Er, Cr:YSGG) were employed to test the modified fibers, with 25 fibers for each laser (modified or unmodified). Surface topography of fibers was examined using SEM. Laser emissions forward and laterally were measured, and thermally sensitive paper used to record the emission profiles. Visible tracing of emissions was undertaken using coaxial He-Ne or InGaAsP diode laser emissions.
Results: The etching/abrasion/etching combination gave a unique honeycomb surface configuration with grating-like properties, whilst etching alone gave a conical end. Conical and honeycomb tips showed greater lateral and lower forward emissions compared with plain fibers, with fourfold improvements in lateral emission. The most regular lateral emissions were from the honeycomb configuration.
Conclusion: The honeycomb and the conical fiber modifications show dramatic improvements in lateral emissions. The unique emission profile obtained for the honeycomb fibers could play a significant role in increasing the efficiency of laser delivery for endodontic and periodontal applications in dentistry, as well as in other fields.
Keyword Laser dentistry
Fiber optics
Delivery systems
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Dentistry Publications
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Citation counts: TR Web of Science Citation Count  Cited 18 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 19 times in Scopus Article | Citations
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Created: Thu, 03 Sep 2009, 18:20:31 EST by Mr Andrew Martlew on behalf of School of Dentistry