Abstract: A method of making a dental appliance for repositioning a patient's teeth includes forming a rigid shell that is configured to receive the patient's teeth of a dental arch. The rigid shell has at least one first cavity with a space for accommodating at least one first tooth of the dental arch needing orthodontic correction and allowing the first tooth to move from an initial tooth arrangement to a target tooth arrangement. The method also includes forming at least one resilient member in the first cavity of the rigid shell. The resilient member has a receiving shape fitting the first tooth in the target tooth arrangement.

Abstract: An orthodontic bracket is provided, including a main body, a cover, and an elastic spring element. The main body has an archwire slot configured to receive an archwire. The cover is hingedly connected to the main body, and the cover can be moved between an open position and a closed position. The open position exposes the archwire slot and the closed position covers the archwire slot. The elastic spring element is disposed in the main body, coupled to the cover and the main body, and configured to generate a force that moves the cover into the open position.

Abstract: A vibration device for dental use is provided, including a support member and a vibration transmission member. The support member is adapted to fit in the space between the upper and lower teeth on one side of the mouth, and includes a frame and an elastic layer. The frame is configured to maintain a shape defining an inner cavity having a first opening formed on the first side of the support member and a second opening formed on the second side of the support member. The elastic layer covers the surfaces of the frame. The vibration transmission member has a connector end for coupling to a vibration source and an insertion end configured to be inserted into the inner cavity of the support member so as to transmit the vibration energy generated by the vibration source to the upper and lower teeth of the patient.

Abstract: A removable orthodontic correction device includes a first correction unit, a second correction unit, and several elastic members. The first correction unit is configured to be removably worn on the anterior teeth of the maxillary or mandibular dental arch of a patient and has several first connection parts formed thereon. The second correction unit is configured to be removably worn on the posterior teeth of the same maxillary or mandibular dental arch of the patient and has several second connection parts formed thereon. The elastic members couple the first connection parts to the second connection parts. Thus, the elastic force of the elastic members drives the first correction unit to retract toward the second correction unit, to achieve en masse retraction and intrusion of the anterior teeth during space closure in the treatment of dental protrusion.

Abstract: A method of producing a positioning guide for an orthodontic bracket is provided. The method includes determining and fixing a position of the orthodontic bracket in relation to a side surface of a corresponding tooth of a setup dental model, wherein the setup dental model has a dentition state of the patient's dental arch after orthodontic treatment; forming a rigid guiding structure with a first part covering the outer surface of each orthodontic bracket and a second part covering the occlusal surface of the corresponding tooth; and forming a flexible linking structure to connect the first part and the second part of the rigid guiding structure to obtain the positioning guide for the respective orthodontic bracket, wherein the rigid guiding structure is inflexible and the flexible linking structure is elastic and retains form.

Abstract: A masticatory orthodontic correction device adapted to use occlusal loads generated during mastication as a correction force to achieve orthodontic correction, includes at least one correction unit with a rigid body. The correction unit is worn on a maxillary or mandibular dental arch of a patient during mastication, and the shape of the correction unit is maintained without deformation when accommodating teeth. At least one first recess is formed in the correction unit and has a shape which allows a first tooth of the maxillary or mandibular dental arch in malposition to move to the envisioned finish position. At least one buffering member is formed in the first recess configured to transmit and buffer the occlusal loads generated during mastication-between the first recess and the first tooth, wherein when the correction unit is worn during mastication, the buffering member deforms and contacts the first tooth over an area.

Abstract: A removable orthodontic device includes an anchorage cap segment, a moving cap segment, a pair of spring elements, and a guiding wire. The anchorage cap segment is removably worn on the anterior teeth of a dental arch. The moving cap segment is removably worn on at least one posterior tooth on one side of the dental arch. The spring elements are disposed between the anchorage and moving cap segments to generate an elastic resilient force to move the moving cap segment relative to the anchorage cap segment. The guiding wire has a U-shaped portion and two rod portions. The U-shaped portion is embedded in and disposed around three sidewalls of the moving cap segment, and the rod portions are received in guiding channels formed in the buccal and lingual sidewalls of the anchorage cap segment to guide the movement of the moving cap segment.

Abstract: An orthodontic bracket is provided, including a backend surface, a frontend surface, a first side surface, a second side surface, and a passageway. The backend surface is adapted for attachment and is opposite the frontend surface. The first and second side surfaces are connected between the backend surface and the frontend surface. The passageway extends from the first side surface to the second side surface. The cross-section of the passageway includes an access opening, an archwire slot, a path portion, and at least one rotation portion. The access opening is configured to allow the archwire to enter the passageway. The archwire slot is configured to receive the archwire. The path portion connects the access opening and the archwire slot. The rotation portion is provided in the path portion to allow the archwire to change its orientation.

Abstract: An orthodontic space closure device is provided, including a first tooth cap unit, a second tooth cap unit, and a number of elastic members. The first tooth cap unit is configured to be removably worn on the anterior teeth of a dental arch of a patient. At least one first connector is fixed on each buccal side of the first tooth cap unit. The second tooth cap unit is configured to be removably worn on the posterior teeth of the dental arch. A vertical extension part is formed on each buccal side of the second tooth cap unit, and at least one second connector is fixed on each vertical extension part. The elastic members couple the first connectors to the second connectors, thereby exerting elastic traction forces having horizontal and vertical components on the first tooth cap unit to achieve retraction and intrusion of the anterior teeth.

Abstract: An orthodontic correction device is provided, including a shell having a number of teeth receiving cavities configured to receive teeth of a dental arch of a patient. A first elastic member holding feature is formed on one side of the shell and corresponds to an undercut region of a tooth of the dental arch. A first orthodontic elastic member is coupled to the first elastic member holding feature and extends to the interior of the shell to engage with the undercut region of the tooth, thereby enhancing the retention of the orthodontic correction device on the dental arch.

Abstract: An orthodontic bracket is provided, including a backend surface, a frontend surface, a first side surface, a second side surface, and a passageway. The backend surface is adapted for attachment and is opposite the frontend surface. The first and second side surfaces are connected between the backend surface and the frontend surface. The passageway extends from the first side surface to the second side surface. The cross-section of the passageway includes an access opening, an archwire slot, a path portion, and at least one rotation portion. The access opening is configured to allow the archwire to enter the passageway. The archwire slot is configured to receive the archwire. The path portion connects the access opening and the archwire slot. The rotation portion is provided in the path portion to allow the archwire to change its orientation.

Abstract: An orthodontic bracket is provided, including a backend surface, a frontend surface, a first side surface, a second side surface, and a passageway. The backend surface is adapted for attachment and is opposite the frontend surface. The first and second side surfaces are connected between the backend surface and the frontend surface. The passageway extends from the first side surface to the second side surface. The cross-section of the passageway includes an access opening, an archwire slot, a path portion, and at least one rotation portion. The access opening is configured to allow the archwire to enter the passageway. The archwire slot is configured to receive the archwire. The path portion connects the access opening and the archwire slot. The rotation portion is provided in the path portion to allow the archwire to change its orientation.

Abstract: An orthodontic correction device includes a correction unit that is adapted to be removably worn on a dental arch. The correction unit includes at least one first receiving part for receiving at least one first tooth which needs correction. The shape of the first receiving part allows the first tooth to move toward the alveolar bone. At least one elongated opening is formed on the occlusal surface of the correction unit and extends to the lingual surface and the buccal surface of the correction unit. The opening exposes parts of the occlusal surface, the lingual surface and the buccal surface of the first tooth. A force exerting assembly is configured to contact the first tooth through the opening, thereby exerting a force on the first tooth to press the first tooth into the alveolar bone.

Abstract: An orthodontic correction device includes a masticatory unit with a rigid body. The masticatory unit can be removably worn on a dental arch and does not deform when accommodating misaligned teeth. A recess is formed in the masticatory unit to accommodate a tooth of the dental arch which requires orthodontic correction. A guiding groove is formed on the occlusal surface of the masticatory unit. An elastic member is configured to stretch across the occlusal surface of the masticatory unit, retained in the guiding groove, and coupled with several connection parts affixed to the buccal surface and lingual surface of the tooth. Occlusal loading generated during mastication is transmitted to the teeth of the dental arch through the masticatory unit and activates the elastic member to move the tooth to its desired position. The orientation of the guiding groove determines the moving direction of the tooth.

Abstract: A method of making a dental appliance for repositioning a patient's teeth includes forming a rigid shell that is configured to receive the patient's teeth of a dental arch. The rigid shell has at least one first cavity with a space for accommodating at least one first tooth of the dental arch needing orthodontic correction and allowing the first tooth to move from an initial tooth arrangement to a target tooth arrangement. The method also includes forming at least one resilient member in the first cavity of the rigid shell. The resilient member has a receiving shape fitting the first tooth in the target tooth arrangement.

Abstract: An orthognathic correction device includes a first retainer, a second retainer and at least two elastic members. The first retainer is configured to be removably worn on the maxillary dental arch of a patient and has at least two first connection parts fixed on the left and right buccal surfaces of the first retainer. The second retainer is configured to be removably worn on the mandibular dental arch of the patient and has at least two second connection parts fixed on the left and right buccal surfaces of the second retainer. The elastic members couple the first and second retainers worn and retained on the maxillary and mandibular dental arches of the patient, respectively, so as to drive the second retainer to move relative to the first retainer, thereby adjusting the relative position between the mandible and the maxilla of the patient.

Abstract: A masticatory orthodontic device includes a masticatory unit with a rigid body. The masticatory unit is configured to be removably worn on a dental arch, wherein when worn during mastication, the shape of the masticatory unit is maintained even under a stress from occlusal forces. The masticatory unit includes a teeth-receiving surface with several recesses for accommodating teeth of the dental arch. A shape memory mesh is disposed between the teeth-receiving surface and the dental arch, configured to remember the shape of the teeth in target teeth positions to guide teeth movements from initial teeth positions toward the target teeth positions. A buffering member is disposed between the teeth-receiving surface and the shape memory mesh. Occlusal forces loading on the masticatory unit are transmitted to the shape memory mesh and the teeth through the buffering member, to achieve teeth movements in the recesses.

Abstract: A removable orthodontic correction device includes a first correction unit, a second correction unit, and several elastic members. The first correction unit is configured to be removably worn on the anterior teeth of the maxillary or mandibular dental arch of a patient and has several first connection parts formed thereon. The second correction unit is configured to be removably worn on the posterior teeth of the same maxillary or mandibular dental arch of the patient and has several second connection parts formed thereon. The elastic members couple the first connection parts to the second connection parts. Thus, the elastic force of the elastic members drives the first correction unit to retract toward the second correction unit, to achieve en masse retraction and intrusion of the anterior teeth during space closure in the treatment of dental protrusion.

Abstract: A masticatory orthodontic correction device includes at least one correction unit with a rigid body. The correction unit is worn on a maxillary or mandibular dental arch of a patient during mastication, and the shape of the correction unit is maintained without deformation when accommodating teeth. At least one first recess is formed in the correction unit and has a shape which leaves a first space around a first tooth of the maxillary or mandibular dental arch. The first tooth is a tooth in malposition requiring correction, and the first space allows the first tooth to move therein during mastication. At least one buffering member is formed in the first space for transmitting and buffering force between the first recess and the first tooth. The orthodontic correction function of the device is active under occlusal loads generated during mastication.