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Related Experiment Video

Updated: Jun 26, 2026

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Published on: July 30, 2007

Microleakage under orthodontic brackets using high-intensity curing lights.

Mustafa Ulker¹, Tancan Uysal, Sabri Ilhan Ramoglu

¹Department of Conservative Dentistry, Erciyes University, Kayseri, Turkey.

The Angle Orthodontist

|January 7, 2009

Summary

High-intensity curing lights, including LED and plasma arc, showed no significant difference in microleakage compared to conventional halogen lights for orthodontic bracket bonding. All tested curing methods are suitable for clinical use.

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Area of Science:

Dental Materials Science
Orthodontic Technology
Biomaterials

Background:

Orthodontic bracket debonding can lead to enamel damage.
Microleakage at the enamel-adhesive-bracket interface is a concern for bond longevity.
Evaluating different light curing units is crucial for optimizing bonding protocols.

Purpose of the Study:

To compare microleakage in the enamel-adhesive-bracket complex using high-intensity (LED, PAC) and conventional (halogen) light curing units.
To assess microleakage at occlusal and gingival margins of bonded brackets.

Main Methods:

Human premolar teeth were bonded with stainless steel brackets and cured with halogen (40s), LED (20s), or PAC (6s) lights.
Specimens were sealed, stained with basic-fuchsine, sectioned, and examined under a stereomicroscope for microleakage.

Related Experiment Videos

Last Updated: Jun 26, 2026

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Published on: July 30, 2007

Statistical analysis employed Kruskal-Wallis and Mann-Whitney U-tests.

Main Results:

No significant difference in microleakage was found between the different light curing units (P >.05).
Gingival margins showed higher microleakage than occlusal margins in LED and PAC groups.
Halogen light resulted in similar microleakage at both margins.

Conclusions:

High-intensity curing lights do not induce greater microleakage than conventional halogen lights.
All tested curing units are viable for routine orthodontic bracket bonding procedures.