Patent ID: 8758010

Claim:
A dental clinical apparatus for dentistry, comprising: a syringe including a hand-graspable main body having a proximal end and a distal end configured to be positioned at a tooth or gum portion during dental treatment; an emission orifice provided at the distal end of the main body; a fluid jetting system provided in the main body, the fluid jetting system including an air conduit and a liquid conduit that both extend from the proximal end of the main body and through the interior of the main body to the emission orifice so that air and a liquid comprising at least one of water, a medicinal liquid, and a washing liquid are selectively conducted from the proximal end of the main body to and from the emission orifice; a plasma jet generating unit including a rare gas tube for feeding a rare gas exhibiting a low dielectric breakdown voltage under atmospheric pressure; a low-frequency high-voltage power supply; and an electric discharge part with a two-electrode structure including a first electrode and a second electrode disposed, respectively, on an upstream side and a downstream side at an outer circumference of the rare gas tube, the first electrode being connected to a grounding side of the power supply and the second electrode being connected to a high-voltage side of the power supply, so that an electric discharge is generated between the first and second electrodes in the rare gas flowing through the rare gas tube and a plasma jet is formed by the electric discharge; and a plasma jet application orifice disposed in the vicinity of the emission orifice in the main body, the plasma jet application orifice being configured to apply the plasma jet toward the tooth or gum portion during dental treatment.