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Erbium-doped Yttrium Aluminum Garnet (Er:YAG) Laser vs Conventional Ceramic Bracket Debonding: A Split-Mouth Clinical Trial
Sponsor: Saint-Joseph University
Summary
This randomized split-mouth clinical trial evaluates enamel surface preservation, pulpal temperature variation, and patient-reported discomfort during ceramic orthodontic bracket removal using two Erbium-doped yttrium aluminum garnet (Er:YAG) laser parameter settings compared to conventional mechanical debonding. Pulpal temperature is monitored in real time using a thermocouple device. Enamel integrity is assessed using the Adhesive Remnant Index (ARI) under 40× magnification. The study aims to determine optimal laser parameters ensuring safe and conservative bracket removal.
Official title: Evaluation of Enamel Surface and Pulpal Temperature for Ceramic Bracket Removal Using Two Laser Intensities Versus Conventional Technique: A Split-Mouth Clinical Study
Key Details
Gender
All
Age Range
20 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
10
Start Date
2025-05-01
Completion Date
2026-05-30
Last Updated
2026-04-08
Healthy Volunteers
No
Interventions
Er:YAG Laser - Parameter 1
Er:YAG laser (LightWalker II ST-E Pro+, Fotona, 2940 nm wavelength) applied in non-contact mode at 4 W average power, 400 mJ pulse energy, 10 Hz frequency, MSP mode (100 µs pulse duration), air=1 and water=1 settings. Laser applied at 45° angle, 1 cm distance, scanning method for 10-15 seconds until bracket detachment.
Er:YAG Laser - Parameter 2
Er:YAG laser (LightWalker II ST-E Pro+, Fotona, 2940 nm wavelength) applied in non-contact mode at 4.5 W average power, 300 mJ pulse energy, 15 Hz frequency, MSP mode (100 µs pulse duration), air=1 and water=1 settings. Laser applied at 45° angle, 1 cm distance, scanning method for 10-15 seconds until bracket detachment.
Conventional Mechanical Debonding
Ceramic bracket removal using orthodontic debonding pliers (3M™ Unitek™ Debonding Instrument) applying controlled torsional force to bracket wings according to standard clinical protocol.
Locations (1)
Universite Saint Joseph, Faculte de Medecine
Beirut, Lebanon