| Effect of Diode laser on debonding of orthodontic ceramic bracket (invitro study) |
| Paper ID : 1100-YRC2022 (R2) |
| Authors |
|
Aya El-Sayed Fathi Abdou * Suez canal university |
| Abstract |
| Background: This study aimed to assess the efficacy of 940 nm diode laser on debonding of orthodontic ceramic brackets. Methods: monocrystalline ceramic brackets and polycrystalline ceramic brackets were bonded to premolar teeth. Diode laser was applied to brackets in the experimental groups for 3 seconds. Shear bond strength and thermal effects on the pulp were assessed at 2W and 5W per square centimeter. Results: The diode laser was ineffective with polycrystalline brackets radiated by 2W per square centimeter. and effective with monocrystalline and polycrystalline brackets radiated by 5W per square centimeter. There was no significant adhesive remnant index score. There were significant increase in intrapulpal temperature but beyond the critical temperature elevation 5.5 c . Conclusion: Diode laser use significantly decreased the debonding force required for monocrystalline ceramic brackets without increasing the pulp chamber temperature significantely . The 5w Diode lasers significantly decreased the debonding force required for polycrystalline ceramic brackets. |
| Keywords |
| Diode laser, Ceramic brackets, Adhesive remnant index, Shear Bond Strength, Intra pulpal temperature. |
| Status: Accepted (Poster Presentation) |
