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VOLUME 11 , ISSUE 1 ( January, 2010 ) > List of Articles


A Randomized Clinical Trial of In-Office Dental Bleaching with or without Light Activation

Qasem Alomari, Ehsan El Daraa

Citation Information : Alomari Q, Daraa EE. A Randomized Clinical Trial of In-Office Dental Bleaching with or without Light Activation. J Contemp Dent Pract 2010; 11 (1):17-24.

DOI: 10.5005/jcdp-11-1-17

License: CC BY-NC 3.0

Published Online: 01-06-2016

Copyright Statement:  Copyright © 2010; The Author(s).



The study aimed to evaluate the effect of four in-office dental bleaching methods on shade change, color stability, patient satisfaction and postoperative sensitivity.

Methods and Materials

Forty patients were randomly divided into four groups (n=10) according to the method of in-office bleaching used: Group A—35% hydrogen peroxide (HP); Group B—35% HP plus BriteSmile and a blue curing light; Group C—35% HP plus QuickSmile and an LED curing light; Group D—35% HP and a Zoom2 metal halide curing light. For all groups, there was only one session of bleaching with three 20-minute applications of bleaching gel. The shade was evaluated before bleaching, immediately after, and one month after treatment using a VITA Classical Shade Guide.


Immediately after bleaching there was a significant difference in color change between the four groups, with Group B having the best results. At one month there was no difference between the four groups. Immediate postoperative sensitivity was the least in Group A and the highest for Group B. Patients in Group B were the most satisfied with the outcome of the bleaching procedure.


In general, the use of different lights for activation of an in-office bleaching agent did not affect the long-term results. Tooth sensitivity was mild and transient in the study. Patients were satisfied with in-office bleaching.

Clinical Significance

Using light activation with in-office bleaching seems to increase the efficacy of treatment only for a short period of time.


Alomari Q, Daraa EE. A Randomized Clinical Trial of In-Office Dental Bleaching with or without Light Activation. J Contemp Dent Pract [Internet]. 2010 Jan; 11(1):017-024. Available from: issue1-alomari.

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