[19a-P02-1~10] 3.3 Biomedical optics

[19a-P02-8] Laser-induced pressure wave generation for laser drug delivery

〇Ryosuke Tanaka¹, Yoshio Yahata², Masahiro Saito², Yuji Matsuura¹ (1.Tohoku Univ., 2.Tohoku Univ. Dentistry)

Keywords:

laser,root canal treatment,hollow fiber

Laser-induced liquid jet (LILJ), which is generated by the rapid expansion of liquid when an infrared laser beam is irradiated to water in a nozzle, is expected to be an effective method for injecting drugs into root canal lesions, which is necessary in dental root canal treatment. In this report, we evaluated the pressure generated by a 2.94 µm wavelength Er:YAG laser beam transmitted through a quartz glass fiber and a hollow optical fiber to generate a LILJ in a nozzle installed at the tip of the fiber.