17 February 2011 Influence of Tm:YAP laser irradiation on tensile strength for bracket debonding
Author Affiliations +
Proceedings Volume 7884, Lasers in Dentistry XVII; 788404 (2011) https://doi.org/10.1117/12.873745
Event: SPIE BiOS, 2011, San Francisco, California, United States
The investigation of tensile strength needed for bracket debonding was the aim of study. A diode pumped Tm: YAP microchip laser generating a continuous 2um radiation with the maximum output power of 4W was used for debonding purposes. The group of 60 brackets was debonded using classical and laser irradiation methods - the doze from 1W to 4 W, 60s. The tensile strength without laser irradiation was in the range from 39.6 N (full ceramic bracket group) to 63.7 N (ceramic bracket with metal slot group). After irradiation the tensile strength was decreased from 35.1 N (full ceramic bracket group) to 48.8 N (ceramic bracket with metal slot group). The results of our study generally agree with the previous studies, substantiating the fact that lasers can be used effectively to thermally soften the adhesive resin for removal of ceramic brackets. From the practical point of view is conclusion that during laser irradiation, thermal ablation occurs and the bracket is removed from the enamel together with the rest of the adhesive resin. Laser debonding is easier and little heat diffusion occurred.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tatjana Dostalova, Helena Jelinkova, Jan Sulc, Petr Koranda, Michal Nemec, Martin Fibrich, Michal Jelinek, Pavel Michalik, Mitsunobu Miyagi, "Influence of Tm:YAP laser irradiation on tensile strength for bracket debonding", Proc. SPIE 7884, Lasers in Dentistry XVII, 788404 (17 February 2011); doi: 10.1117/12.873745; https://doi.org/10.1117/12.873745


Er:YAG laser metal and ceramic bracket debonding
Proceedings of SPIE (February 29 2016)
Laser ablation of enamel and composite using 355 nm laser...
Proceedings of SPIE (February 15 2006)
Laser brackets debonding Tm YAP and Clarity SL self...
Proceedings of SPIE (March 05 2010)
Laser brackets debonding Tm YAP, Nd YAG, and GaAs...
Proceedings of SPIE (February 23 2009)
Bond strength of composites on Er YAG and Er,Cr YSGG...
Proceedings of SPIE (February 04 1999)

Back to Top