A clinical study comparing the efficacy of light activated in-surgery whitening versus in-surgery whitening without light activation
This study says the whitening results are the same with or without light activation. Interesting that there was more sensitivity without the light then with the light. I'm not sure why? MJ
Available online 19 March 2013
Abstract
Objectives
This
randomised controlled clinical trial assessed the efficacy of colour
change and sensitivity after in surgery whitening with and without light
activation.
Methods
Twenty
two patients were randomly assigned to one of two different groups:
Group A – in-surgery bleaching with light activated 25% hydrogen
peroxide gel followed by 2 weeks at home, night time bleaching with 10%
carbamide peroxide gel in a customised bleaching tray. Group B –
in-surgery bleaching with 25% hydrogen peroxide without light activation
followed by 2 weeks at home, night time bleaching with 10% carbamide
peroxide gel in a customised bleaching tray. The efficacy of tooth
whitening was assessed by determining the colour change associated with
the six maxillary anterior teeth. Sensitivity was self-assessed with the
use of a visual analogue scale (VAS).
Results
Overall,
there was no significant difference in shade change between the two
groups immediately after the in surgery whitening phase, and at one or
two weeks post in surgery treatment. With regard to sensitivity
immediately following the in surgery whitening participants in Group B
reported a significantly higher level of sensitivity in comparison to
Group A (p = 0.03).
Conclusions
There
was no significant difference between the shade improvements achieved
by the two whitening protocols tested throughout the 2-week period of
the study (p > 0.05). There was no statistical significant
difference in sensitivity at the one and two week review periods,
however, immediately after treatment participants in Group B reported a
significantly higher level of sensitivity than participants in Group A (p = 0.03).
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