Abstract: Disclosed is a method of producing lithium sulfide (Li2S) without using hydrogen sulfide (H2S) gas. Particularly, the method of producing lithium sulfide (Li2S) includes preparing a starting material including a metal oxide by subjecting a mixed powder including an inorganic compound containing lithium and oxygen, a metal reducing agent, and sulfur (S) to synthesis reaction using mechanical force, preparing a mixed solution by mixing the starting material and a solvent, and obtaining a lithium sulfide (Li2S) powder by removing the metal oxide from the mixed solution and then performing drying.

Abstract: A surface coating method for an orthodontic corrective bracket is provided, in which each orthodontic bracket formed of ceramic is covered with a titanium coating layer having a predetermined thickness so as to be able to minimize a frictional force and to increase surface hardness and durability while a wire fitted into slots of the brackets applies orthodontic tension to teeth. Accordingly, when the teeth are corrected using the ceramic orthodontic brackets on whose surfaces the titanium coating layer having a predetermined thickness is formed, the frictional force can be minimized while the wire fitted into the slots of the brackets is applying the orthodontic tension to the teeth, and thus it is possible to realize a tooth movement path desired by an orthodontist and to shorten a treatment period.

Abstract: Provided is an orthodontic treatment including a main tube, and a pair of caps provided at both ends of the main tube to form an adhesion space therebetween in which an adhesive is accommodated and the adhesive is prevented from flowing into the main tube through an insertion hole of the main tube. Since the adhesive is applied to the adhesion space formed by fitting the pair of caps onto the outer circumference of the main tube, the caps can prevent the applied adhesive flowing into the main tube and the wire can be easily inserted into the main tube.

Abstract: The present invention relates to a self-ligation bracket for correcting teeth alignment comprising: on one side a body 210 further comprising a connection part 2110 and an attachable portion 2120, the connection part being provided on the upper portion of an insertion groove 2111 and an insertion groove 2111 having a predetermined depth into which an archwire is inserted, being provided on the lower portion of the insertion groove and a plurality of fixing protrusions provided with fixing grooves on one side, and being provided in between a supporting protrusion 2114 and a supporting protrusion 2114 which are arranged with a predetermined distance apart from each other, and the body 210 formed with a hooking space 2118 which is provided on the downside of a guide protrusion 2116 that protrudes to a predetermined height and the insertion groove 2111; and a cap spring 220 provided with an elastic fixing part 222 on one side, an elastic hanging part 224 on the other side, and a bent portion 223 which is at the e

Abstract: A surface coating method for an orthodontic corrective bracket is provided, in which each orthodontic bracket formed of ceramic is covered with a titanium coating layer having a predetermined thickness so as to be able to minimize a frictional force and to increase surface hardness and durability while a wire fitted into slots of the brackets applies orthodontic tension to teeth. Accordingly, when the teeth are corrected using the ceramic orthodontic brackets on whose surfaces the titanium coating layer having a predetermined thickness is formed, the frictional force can be minimized while the wire fitted into the slots of the brackets is applying the orthodontic tension to the teeth, and thus it is possible to realize a tooth movement path desired by an orthodontist and to shorten a treatment period.

Abstract: Provided is an orthodontic treatment including a main tube, and a pair of caps provided at both ends of the main tube to form an adhesion space therebetween in which an adhesive is accommodated and the adhesive is prevented from flowing into the main tube through an insertion hole of the main tube. Since the adhesive is applied to the adhesion space formed by fitting the pair of caps onto the outer circumference of the main tube, the caps can prevent the applied adhesive flowing into the main tube and the wire can be easily inserted into the main tube.

Abstract: Disclosed is a recombinant vaccine for porcine atrophic rhinitis. A vaccine is provided which uses a Pasteurella multocida (D:4) outer membrane protein H. The vaccine uses a small size of peptides, so that it exhibits a remarkable activity. In addition, it is possible to provide a vaccine that can be applied in the body through a variety of routes.

Abstract: Disclosed is a recombinant vaccine for porcine atrophic rhinitis. A vaccine is provided which uses a Pasteurella multocida (D:4) outer membrane protein H. The vaccine uses a small size of peptides, so that it exhibits a remarkable activity. In addition, it is possible to provide a vaccine that can be applied in the body through a variety of routes.