Disclosed is a traction/locking element, a traction/locking set, an orthodontic bracket, an orthodontic bracket setup and a tooth orthodontic method. The traction/locking element comprises a strip-shaped nail body having a cross-sectional area of 0.06-2.5 mm.sup.2 and a length of 0.8-4.5 mm. The front end of the nail body is a first fixed end, and the rear end thereof is a first screwing end. The first fixed end is provided with connecting external screws, with an external diameter that is 0.2-1.6 mm. At least the end position of the first screwing end is provided with a first force applying surface. The traction is performed in time according to the traction opportunity of orthodontics, and the traction is very reliable, reducing the discomfort in the oral cavity. With a breaking part and a disassembly and assembly tool, the assembly and disassembly are convenient.

A novel self-ligating orthodontic bracket, belongs to the technical field of orthodontics. The novel self-ligating orthodontic bracket includes a base plate and a bracket body. The bracket body is provided with an archwire recess, and one side of the archwire recess is provided with a self-ligating recess. A locking piece is slidably disposed in the self-ligating recess. An elastic locking mechanism is disposed in the self-ligating recess. And the elastic locking mechanism is mounted below the locking piece so as to provide, in a locked state, a locking force for preventing the locking piece from sliding. Thus, the shortcomings in the existing technology are overcome. The locking of the locking piece is achieved by using the elastic locking mechanism.

A bracket including a main body part and a covering part. The main body part includes a first surface portion and a first bottom face portion. The first surface portion is provided with a first groove, which divides the first surface portion into first and second ends. The first end has a surface with a first protruding portion having a smooth curved surface. The covering part includes a second surface portion and a second bottom face portion, the second bottom face portion matches with the surface of the second end, and the second surface portion has a smooth curved surface matching the surface of the first protruding portion. The covering part and the main body part are adapted to match and be engaged with each other to form the bracket having a smooth curved shape in a gingival direction, an occlusal direction, a mesial direction and a distal direction.

A bracket including a main body part and a covering part. The main body part includes a first surface portion and a first bottom face portion. The first surface portion is provided with a first groove, which divides the first surface portion into first and second ends. The first end has a surface with a first protruding portion having a smooth curved surface. The covering part includes a second surface portion and a second bottom face portion, the second bottom face portion matches with the surface of the second end, and the second surface portion has a smooth curved surface matching the surface of the first protruding portion. The covering part and the main body part are adapted to match and be engaged with each other to form the bracket having a smooth curved shape in a gingival direction, an occlusal direction, a mesial direction and a distal direction.

An orthodontic self-locking bracket includes a bracket body having an arch wire bracket slot and a bracket cover matched with the bracket body. Two sides of the arch wire bracket slot are provided with work wings. A bracket opening is arranged at the intersection of the arch wire bracket slot on the bracket body, and the bracket cover is inserted into the bracket opening and is in sliding fit with the bracket body. Left side of the arch wire bracket slot is provided with a pin shaft penetrating through the bracket opening, and the pin shaft is in clamping fit with the lower part of the bracket cover, so that the arch wire bracket slot can be closed and opened by the bracket cover. The bracket is locked and unlocked only by sliding rather than overturning the bracket cover. Complex operation for ligaturing a steel wire is eliminated.

An orthodontic self-locking bracket includes a bracket body having an arch wire bracket slot and a bracket cover matched with the bracket body. Two sides of the arch wire bracket slot are provided with work wings. A bracket opening is arranged at the intersection of the arch wire bracket slot on the bracket body, and the bracket cover is inserted into the bracket opening and is in sliding fit with the bracket body. Left side of the arch wire bracket slot is provided with a pin shaft penetrating through the bracket opening, and the pin shaft is in clamping fit with the lower part of the bracket cover, so that the arch wire bracket slot can be closed and opened by the bracket cover. The bracket is locked and unlocked only by sliding rather than overturning the bracket cover. Complex operation for ligaturing a steel wire is eliminated.

An orthodontic appliance includes a body defining a slot including an inserting portion including an open end, and a receiving portion spaced apart from the open end and communicating with the inserting portion. A locking member is at least partially and movably received within an opening. The locking member is movable at least along the first axis between a locked state and an unlocked state and is normally biased to the locked state. In the locked state, the locking member at least partially extends into the inserting portion to removably retain the archwire within the receiving portion. In the unlocked state, the locking member is displaced from the locked state into the opening along the first axis, such that upon application of an external force, the locking member is movable to the unlocked state to allow movement of the archwire between the inserting portion and the receiving portion.

An orthodontic bracket and archform system that uses friction-free mechanics are disclosed. The archform can have a male fastener that can be retained within an orthodontic bracket. The orthodontic bracket can have varying locking mechanism, such as deflectable tabs, springs, locking pins, and others, that can cooperate with features of the male fastener to prevent sliding between the archform and the bracket.

An orthodontic bracket and archform system that uses friction-free mechanics are disclosed. The archform can have a male fastener that can be retained within an orthodontic bracket. The orthodontic bracket can have varying locking mechanism, such as deflectable tabs, springs, locking pins, and others, that can cooperate with features of the male fastener to prevent sliding between the archform and the bracket.

An orthodontic post and pin assembly including a post structure, being slotted at its back end, for accommodating a pin therethrough, the post includes a further slot into which the wire of an orthodontic appliance may locate, so that when the post and pin assembly are connected onto the wire, and a hybrid screw is tighten within the post, the appliance may become affixed to the wire at the position of its tightening and securement. This eliminates the need for removal of the wire, when a different or different size orthodontic appliance needs to be installed.