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http://dx.doi.org/10.4047/jkap.2019.57.1.1

A study on the processing of dental ceramic composites by using laser  

Hwang, Junho (Department of Dental Science, Graduate School, Kyungpook National University)
Kwon, Sung-Min (Institute of Advanced Convergence Technology, Kyungpook National University)
Lee, ChanWoo (Institute of Advanced Convergence Technology, Kyungpook National University)
Kim, HyunDeok (Institute of Advanced Convergence Technology, Kyungpook National University)
Kim, Im-Sun (Department of Dental Technology, Daegu Health College)
Lee, Kyu-Bok (Department of Dental Science, Graduate School, Kyungpook National University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.57, no.1, 2019 , pp. 1-7 More about this Journal
Abstract
Purpose: The laser processability of dental prosthesis is investigated using two ceramic composites, including 3M, Lava Ultimate and Ivoclar vivadent, IPS e.max. Materials and methods: The $CO_2$ laser, picosecond laser and femtosecond laser are used to assess the processing power of dental prosthetic materials Lava Ultimate and IPS e.max and the line processing shape was measured using a confocal microscope. Results: The brittleness, carbonization and micro crack of the ceramic composite were influenced by heat accumulation of the material and could be controlled by the laser power and pulse time. Conclusion: In the case of $CO_2$ lasers, micro crack and carbonation occurred immediately, and in the picosecond laser processing, the micro cracks are partially improved, but the carbonization occurs continuously. Finally, we confirmed the high efficiency of laser processing with femtosecond laser. In particular, Lava Ultimate, a ceramic resin composite material, showed the best processability when processed using a femtosecond laser.
Keywords
Dental ceramic composites; Laser processing; Picosecond laser; Femtosecond laser; $CO_2$ laser;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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