What question did this study set out to answer?

To compare the effects of conventional bleaching, LED light activation, and various laser activation systems on human enamel surface roughness.

August 15, 2026Lasers in Medical ScienceOpen Access

Comparison of tooth surface roughness after bleaching with conventional and different light-activated methods

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Authors

NANozhan AzimiIslamic Azad University Dental Branch of Tehran BSBahareh SanaeeQom University of Medical Science and Health Services HSHasti SeifiIslamic Azad University Medical Branch of Tehran

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Implication

In vitro experimental study demonstrates increased enamel surface roughness with LED bleaching compared to laser methods in human teeth, indicating lasers better preserve enamel integrity.

Key Points

To compare the effects of conventional bleaching, LED light activation, and various laser activation systems on human enamel surface roughness.
Sixty freshly extracted human anterior teeth were randomly assigned to six groups (n = 10 each): conventional bleaching without light, LED bleaching, and four laser bleaching systems (KTP, Diode, Nd:YAG, and CO2).
Surface roughness was measured before and after treatment with Opalescence Xtra Boost for the control group and JW Power Bleaching Gel for the light- and laser-activated groups.
Data were statistically analyzed using Kruskal-Wallis tests and Two-Way ANOVA.
LED-activated bleaching resulted in a significantly greater surface roughness change compared to bleaching without light (P = 0.0236).
Laser-activated bleaching groups (KTP, Diode, Nd:YAG, and CO2) did not differ significantly in surface roughness from the conventional group or from one another.
In the middle third of the tooth crown, LED activation produced significantly higher enamel roughness compared to KTP laser activation (P = 0.029).

Cite This Study

Azimi et al. (2026) studied this question.

synapsesocial.com/papers/6a8019fe75c2e31742c86519 https://doi.org/10.1007/s10103-026-04981-7

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Implication

In vitro experimental study demonstrates increased enamel surface roughness with LED bleaching compared to laser methods in human teeth, indicating lasers better preserve enamel integrity.

Comparison of tooth surface roughness after bleaching with conventional and different light-activated methods

Discussion

Member takes

Implication

Key Points

Cite This Study

Comparison of tooth surface roughness after bleaching with conventional and different light-activated methods

Discussion

Member takes

Implication

Key Points

Cite This Study

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