Excision of Dental Caries

Effects of Erbium, Chromium:YSGG Laser Irradiation on Root Surface: Morphological and Atomic Analytical Studies

“…20 This was sup ported by the facts of strong absorption to water 21 and low ab sorption to dental hard tissues by the wavelength of 2.78 ILm. 22 In this study, it was observed that a crater with a sharp edge, but rough and irregular surface, was produced by laser irradia tion when the laser beam was directed at a 90° angle to the sam ples. No color changes indicative of burning or carbonization were detected by stereoscopy.…”

Study on Acid Resistance of Human Dental Enamel and Dentin Irradiated by Semiconductor Laser with Ag(NH3)2F Solution

“…The reason may be a result of the difference of absorption efficiency of laser light and Ag(NH 3 ) 2 F solution at the tissues. The absorption of semiconductor laser at the wavelength of 830 nm to dentin is higher than that of enamel, 31 whereas Ag(NH 3 ) 2 F penetrates sound human enamel at approximately 20 mm deep; the depth of the penetration of F 2 into the dentin was up to 50-100 mm deep, and the depth of the penetration of silver ion (Ag 1 ) reaches almost to the pulp chamber. 27 For the purpose of caries prevention and the desensitization of hypersensitive dentin, fluoride or silver nitrate was used.…”

Study of the Caries Management with Diode Laser Used the Experimental Caries-detecting Dye Solution

“…Various types of laser such as CO2 laser, Nd:YAG laser, Er:YAG laser and diode laser have been researched, developed and applied in different fields. In the field of dentistry, numerous studies have reported on the use of lasers including for incision and hemostasis in oral surgery 8) , treatment of dentin hypersensitivity 9) , addition of acid resistance to dentin 10) , sterilization of oral bacteria 11) , sterilization of root canal bacteria 12) , and cavity formation 13) . However, lasers should be used with careful consideration of their respective characteristics, as their effects vary depending on the oscillation wavelength and energy density.…”