Kim Hyee Woong

Bio: Kim Hyee Woong is an academic researcher. The author has contributed to research in topics: Thermoplastic & Bracket. The author has an hindex of 2, co-authored 10 publications receiving 20 citations.

Removable dental appliance mounted on teeth and manufacturing method thereof

Abstract: The present invention discloses an arch-shaped removable dental appliance that is removably mounted on the teeth of an upper jaw or a lower jaw constituting a dental arch and a method for manufacturing the same. The removable dental appliance according to the present invention includes a cover frame that has a layered structure which includes a hard first cover layer and a soft second cover layer provided on a further inner side than the first cover layer and has a tooth groove in a longitudinal direction; and a hard core frame that has a tooth contact surface which is shaped to be punched by edge portions of a plurality of teeth among the teeth described above and is provided in the tooth groove of the cover frame, the cover frame including a cover inner wall constituting one side wall of the tooth groove to be provided along a tongue side of the teeth, a cover outer wall constituting the other side wall of the tooth groove to be provided along the front of the teeth, and a cover base connecting the cover inner wall and the cover outer wall to each other so block the teeth and the relative teeth from each other. The removable dental appliance according to the present invention prevents tooth damage by absorbing a gritting or gnashing impact, is effective for tooth arrangement maintenance and is highly durable to continuous use. Also, the removable dental appliance according to the present invention can provide an adequate force for attachment and detachment, and thus tooth damage during the attachment and detachment can be prevented, the attachment and detachment can be facilitated, and resistance and form stability can be provided against extended use or impacts.

Orthodontic Apparatus for Lingual Retractor And Manufacturing Method Thereof

Abstract: PURPOSE: An orthodontic correction device for a lingual retractor and a manufacturing method thereof are provided to use a bracket for performing corrections as a lingual retractor. CONSTITUTION: A manufacturing method of an orthodontic correction device for a lingual retractor is as follows. A first wire(11) mountable on brackets is arranged along a bracket model in patient oral model having a bracket shape. A second wire(12) capable of being connected to a pulling member(30) is fixed to the first wire. The first wire is arranged along the rows of the bracket model. The second wire is arranged on the patient oral model.

Manufacturing Method For Mouthpiece And Mouthpiece Using The Same

Abstract: The present invention discloses a method for manufacturing a mouthpiece in which a tooth groove is formed such that teeth forming a dental arch are inserted into the tooth groove, and the tooth groove covers an end surface of a dental crown engaging with a counter tooth of the teeth, and the mouthpiece manufactured using the method. The purpose of the present invention is to provide a method for manufacturing a mouthpiece of structure which is capable of alleviating an impact applied to teeth, gives smooth wearing sensation, and has improved structural stability and durability, and the mouthpiece manufactured using the method. A method for manufacturing a mouthpiece according to the present invention comprises: a step (a) of molding a multilayered core frame including a rigid core layer which forms a bottom surface of the tooth groove, and a soft core layer which is formed on an outer part of the rigid core layer; and a step (b) of forming a multilayered tooth frame on an outer part of the core frame, the multilayered tooth frame including a first sidewall and a second sidewall which form both sidewalls of the tooth groove by laminating a multilayered cover sheet onto the core frame, and a home base which covers the core frame by connecting the first sidewall and the second sidewall. The step (b) comprises a step (b1) of integrally fusing the second surface layer and the soft core layer by laminating the cover sheet including a rigid first surface layer which forms one side surface of the cover sheet and a second surface layer which forms other side surface of the cover sheet as the same material as the soft core layer onto an outer part of the core frame.

Maxillary Skeletal Expander With Triple expansion screw system

Abstract: The present invention relates to a maxillary expansion device having a triple screw system for rapid palatal expansion. In the case of narrow and constricted maxillary arches requiring rapid palatal expansion, an expansion screw that is large enough to obtain a desired amount of expansion can be hardly positioned and new device preparation and repetition of procedures are required for additional expansion. The present invention is to deal with an increase in cost and hassles attributable to those requirements and allow adjustment of the amount of palatal expansion that is laterally asymmetrical. The present invention includes: a pair of left main bodies; a pair of right main bodies; a first expansion screw having both side portions inserted to penetrate the left main bodies and the right main bodies and adjusting a gap between the left main bodies and the right main bodies; a second expansion screw having both side portions inserted to penetrate the left main bodies and adjusting a gap between the left main bodies; and a third expansion screw having both side portions inserted to penetrate the right main bodies and adjusting a gap between the right main bodies.

Mouth Guard And Manufacturing Method Thereof

Abstract: The present invention relates to a mouth guard including: an arch-shaped guard frame where a tooth groove is formed for tooth insertion; and a guard cover stacked on the outer surface of the guard frame. The guard cover has: a tongue-side cover stacked on a tongue side of the guard frame; and a lip-side cover formed integrally with the tongue-side cover, stacked on a lip side of the guard frame, and higher than the tongue-side cover. The lip-side cover has: a lip-side base portion superposed on the lip side of the guard frame; and a gum protecting portion extending upward and downward from the lip-side base portion with its surfaces on both of its sides exposed. According to the present invention, the gum-covering part is thinner than the tooth surface-covering part, and thus the present invention can be worn in a soft way, is capable of minimizing irritation, and can be manufactured with ease.

Lingual orthodontic system

Abstract: The present invention relates to a lingual orthodontic system comprising: an elastic material first wire formed along a boundary line of a lingual surface and gum at an upper jaw anterior tooth part; a first hook having one end connected with a first wire, having the other end formed in a ring shape, and formed in the shape of the hard palate from one end to the other end; a first fixing circle having one end transplanted in the hard palate, and having the other end exposed to the top of the hard palate, wherein the other end includes a bone screw-shaped fixing means; a towing device fixed on a hard palate surface by the first fixing circle, and including two or more ring shapes; a wire fixing unit attached to the hard palate surface of a canine tooth at the upper jaw anterior tooth part; a slot formed in a penetration shape, attached to the hard palate surface of the upper jaw molar tooth part, and connected with a hook for towing the gum of the upper jaw molar tooth part; a second wire having one end fixed to the wire fixing unit, and having the other end penetrating through the slot; a first elastic rubber string for connecting the ring shapes of the first hook and the ring shapes of the towing device, and providing towing power in a tooth root direction of the upper jaw anterior tooth part; and a second elastic rubber string for connecting the hook connected with the slot and the ring shapes of the towing device, and providing towing power in a tooth root direction to the molar tooth part connected with the slot.

Maxillary skeletal expander

Abstract: A maxillary skeletal expander is proposed. The maxillary skeletal expander is composed of a pair of dental arch expansion bodies positioned to face each other in an oral cavity; an expanding screw provided between the pair of dental arch expansion bodies to move the dental arch expansion bodies; a guide provided between the pair of dental arch expansion bodies to safely move the dental arch expansion bodies without deviation; a dental arch expansion body combining means having a fixing piece for penetrating a fixing hole at a selected part in the oral cavity, and configured to be combined to and separated from each of the dental arch expansion bodies.

Orthodontic device and method using orthodontic

Abstract: The present invention relates to an orthodontic device and an orthodontic method using the orthodontic device including a soft correction frame disposed to cover a corresponding group of teeth with a correction groove corresponding to a correction tooth form of teeth formed in an inside surface and a hard supporting frame coming into close contact to surround an outside surface of the correction frame, in which a coupling groove portion is formed in an end portion of an edge of the outside surface of the correction frame and a coupling bent portion engaged and coupled to correspond to the coupling groove portion is formed in an end portion of an edge of an inside surface of the supporting frame. According to the orthodontic device and the orthodontic method using the orthodontic device, the correction frame is disposed to cover the corresponding group of teeth in the state where the correction groove corresponding to the correction tooth form of the teeth is formed and the supporting frame is coupled with the outside surface of the correction frame, and thus pains are suppressed and an orthodontic force resulting from the hard supporting frame is maintained during correction by the soft correction frame. Since the coupling groove portion and the coupling bent portion that are fastened and correspond to each other are formed in the end portions of the edges of the correction frame and the supporting frame, a stable state of coupling can be maintained and a stable orthodontic force can be maintained with respect to the group of teeth.

Manufacturing Method For Mouthpiece And Mouthpiece Using The Same

Abstract: The present invention discloses a method for manufacturing a mouthpiece in which a tooth groove is formed such that teeth forming a dental arch are inserted into the tooth groove, and the tooth groove covers an end surface of a dental crown engaging with a counter tooth of the teeth, and the mouthpiece manufactured using the method. The purpose of the present invention is to provide a method for manufacturing a mouthpiece of structure which is capable of alleviating an impact applied to teeth, gives smooth wearing sensation, and has improved structural stability and durability, and the mouthpiece manufactured using the method. A method for manufacturing a mouthpiece according to the present invention comprises: a step (a) of molding a multilayered core frame including a rigid core layer which forms a bottom surface of the tooth groove, and a soft core layer which is formed on an outer part of the rigid core layer; and a step (b) of forming a multilayered tooth frame on an outer part of the core frame, the multilayered tooth frame including a first sidewall and a second sidewall which form both sidewalls of the tooth groove by laminating a multilayered cover sheet onto the core frame, and a home base which covers the core frame by connecting the first sidewall and the second sidewall. The step (b) comprises a step (b1) of integrally fusing the second surface layer and the soft core layer by laminating the cover sheet including a rigid first surface layer which forms one side surface of the cover sheet and a second surface layer which forms other side surface of the cover sheet as the same material as the soft core layer onto an outer part of the core frame.

Multi-layer film and preparation method thereof

Abstract: The invention discloses a multi-layer film comprising a laminated 2n+1 unit layers, wherein n is more than or equal to 1, and the hardness of an intermediate unit layer is the highest, the hardness ofunit layers at two sides decreases in turn or the unit layers with different hardnesses are alternately stacked, and the hardnesses of unit layers at two outermost sides are respectively less than those of adjacent unit layers; the total flexural elastic modulus of the multi-layer film is 600-2000 MPa, the tear resistance is 200-500 N/cm and the thickness is 0.5-1.1 mm. A preparation method comprises the steps of drying, feeding, melting, homogenizing and extrusion, rolling and preparing the multi-layer film. With the multi-layer film stacking arrangement method, films with different properties can be chosen for personalized customization, and both sides of the films are soft. When the film is made into dental brackets subsequently, the mouthfeel comfort of wearing is increased. The preparation method adopts the co-extrusion method, and the performance of the multi-layer film achieves the best effect under the specific operating parameters.