Efficacy of LED versus KTP laser activation of photodynamic bleaching of tetracycline-stained dentine

Bennett, Zackary Y. and Walsh, Laurence J. (2014) Efficacy of LED versus KTP laser activation of photodynamic bleaching of tetracycline-stained dentine. Lasers in Medical Science, 30 7: 1823-1828. doi:10.1007/s10103-014-1675-4


Author Bennett, Zackary Y.
Walsh, Laurence J.
Title Efficacy of LED versus KTP laser activation of photodynamic bleaching of tetracycline-stained dentine
Journal name Lasers in Medical Science   Check publisher's open access policy
ISSN 1435-604X
0268-8921
Publication date 2014-10-07
Year available 2014
Sub-type Article (original research)
DOI 10.1007/s10103-014-1675-4
Open Access Status
Volume 30
Issue 7
Start page 1823
End page 1828
Total pages 6
Place of publication London United Kingdom
Publisher Springer U K
Collection year 2015
Language eng
Abstract In some well-established laser applications where large spot sizes are used, an array of high-intensity light emitting diodes (LED) emitting at similar wavelength could potentially replace the laser. This situation applies for the photodynamic bleaching of stains in teeth. This study compared the relative efficacy of an array of visible green LED (535 nm ± 15 nm) with a KTP laser in photodynamic bleaching of tetracycline-stained dentine in human tooth roots. After establishing consistent staining in 96 roots using a validated method, the roots were sectioned into 2–3-mm thick horizontal slices that were treated with gels containing rhodamine B (Smartbleach® or Smartbleach® 3LT). Colour changes were tracked up to 1 month after treatment. While both systems were effective in bleaching the tetracycline-stained dentine, KTP laser activation gave greater bleaching efficacy than LED activation, enhancing the action of the gel. Use of the KTP laser would be preferable over an LED system when confronted with tetracycline staining. Use of this photodynamic bleaching method offers valuable means to reduce the severity of tetracycline staining.
Keyword KTP laser
Photodynamic bleaching
Tooth discolouration
Tetracyclines
Light emitting diodes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 07 Oct 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Dentistry Publications
 
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