1.Dental Laser for Therapy 2.Laser wavelength 660nm 3.highly integrated, easy to carry 4.battery-powered Dental Laser For Therapy Instruction (Model LHH-500I) 1. Specification Wavelength 660nm Laser power ... apical perodontits, dentin hypersensitiveness, recurrent aphthae, dysfunction of ocular pemphigiod, dental pulp sensitivity after filling the light-cured resin, hyperemia of ...