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Efficacy of intracoronal bleaching techniques with different light activation sources
L D Carrasco1, D M Z Guerisoli, M J A Rocha
1Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, SP, Brazil.
International Endodontic Journal
|February 20, 2007
Summary
Intracoronal bleaching with 35% hydrogen peroxide showed similar effectiveness regardless of activation method. LEDs, halogen lamps, and the walking bleach technique all yielded comparable results for tooth whitening.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Intracoronal tooth discoloration can result from various factors, impacting aesthetics.
- Hydrogen peroxide is a common agent for internal bleaching of discolored teeth.
Purpose of the Study:
- To compare the efficacy of 35% hydrogen peroxide for intracoronal bleaching.
- To evaluate activation methods: Light Emitting Diodes (LEDs), halogen lamp, and the walking bleach technique.
Main Methods:
- Extracted human central incisors were artificially stained.
- A glass ionomer barrier was placed, followed by 35% hydrogen peroxide application.
- Teeth were assigned to groups activated by LEDs, halogen lamp, walking bleach, or controls.
Main Results:
- Visual assessment by calibrated evaluators showed no statistically significant differences in tooth shade among the tested groups.
- All tested intracoronal bleaching activation methods demonstrated comparable outcomes.
Conclusions:
- 35% hydrogen peroxide is effective for intracoronal bleaching irrespective of activation method.
- LEDs, halogen lamps, and the walking bleach technique offer similar efficacy for internal tooth whitening.