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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Halogen light versus LED for bracket bonding: shear bond strength.
Paulo Eduardo Guedes Carvalho1, Valdemir Muzulon dos Santos, Hassan Isber
1University of São Paulo City, Brazil. paulo@carvalho-ortodontia.com.br
Dental Press Journal of Orthodontics
|July 24, 2013
Summary
Light-emitting diode (LED) curing devices show comparable bracket bonding strength to halogen lights in orthodontics when used for 40 seconds. Shorter activation times may yield inferior results with some LED devices.
Area of Science:
- Biomaterials Science
- Dental Materials
- Orthodontic Technology
Background:
- Light-curing devices are essential for dental material polymerization.
- LED technology offers potential for faster, efficient polymerization protocols.
- Optimizing light-curing parameters is crucial for reliable clinical outcomes.
Purpose of the Study:
- To compare the shear bond strength of orthodontic brackets bonded with LED and halogen light-curing devices.
- To evaluate the influence of activation time on polymerization efficacy.
- To determine the suitability of different light-curing technologies in orthodontic practice.
Main Methods:
- Comparative study evaluating bracket shear bond strength.
- Utilized three light-curing devices: one halogen (Optilight Plus) and two LED (Optilight CL, Elipar Freelight).
- Statistical analysis (ANOVA) to compare bond strength results.
Main Results:
- One LED device (Gnatus Optilight CL) showed statistically inferior performance at short activation times.
- At 40 seconds activation, this LED device achieved polymerization results consistent with other sources.
- Halogen light demonstrated the highest average performance, followed by the 3M/ESPE LED device.
Conclusions:
- LED light-curing devices are suitable for orthodontic bracket bonding.
- A minimum activation time of 40 seconds is recommended for consistent LED performance.
- Proper protocol adherence ensures reliable polymerization with LED technology in orthodontics.
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