Periodontal disease examination device, optical waveguide array and mouthpiece

摘要

The loss of light is reduced when examining for periodontal diseases. A plurality of optical fibers (21) to (25) are each held by a holder (35) so that they can move freely along the direction of the optical axis independently of each other. Since the optical fibers (21) to (25) are each freely movable along the direction of the optical axis, light-emitting end faces of the optical fibers (21) to (25) can be in close contact with a tooth (TO) or gum (GU) ) to be brought. Light reflected from the tooth (TO) and the gum (GU) can be made to strike the optical fibers (21) through (25) with reduced loss.