Send to

Choose Destination
J Contemp Dent Pract. 2010 Jan 1;11(1):E017-24.

A randomized clinical trial of in-office dental bleaching with or without light activation.

Author information

Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Safat, Kuwait.



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


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.


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

[Indexed for MEDLINE]

Supplemental Content

Loading ...
Support Center