An orthodontic device for displacing a tooth and/or a group of teeth of a patient, which directly adjoin the tooth along a mandibular arch, in particular in the lower jaw in the area of the molars, the device comprising: a rigid, dimensionally stable connection between the tooth to be displaced and an attachment point for the device which fixed to the jaw and substantially does not change during the treatment of the patient, a regulating device for changing the length of the rigid connection in direct vicinity of the tooth to be displaced. A torsion-proof attachment of the device in the jaw bone may be provided. Alternatively, a point of support is provided on one tooth.

An orthodontic appliance is provided and includes: a base member fixed to two or more screws implanted in a vicinity of median palatine suture of a palate bone; an arm-shaped arm member having a first connecting portion connected to the base member and a second connecting portion located in a vicinity of palatal side of a tooth; and a traction member that is made of an elastic wire material and pulls a tooth as the traction target. The traction member has a traction base portion, a traction fixation portion, and a traction force generation portion. The traction fixation portion has a bent portion in which the wire material extending along dentition is plastically deformed and bent toward a tooth root side. The bent portion is hooked on a protruding portion protruding to a palate side in a bracket.

An implant positioning device is fitted on to an orthodontic brace of a patient and used in between an X-ray projecting machine and an X-ray film. The implant positioning device includes a measuring standard member, that forms a detection region by means of a radiopaque material and has a positioning unit on one side of the detection region. The detection region is provided with at least one set of measuring scales. An encircled member is integrated with one side of the measuring standard member and forms an encircling main body that is connected to the orthodontic brace. A sleeved space is collectively formed by the encircling main body and the measuring standard member.

An implant positioning device is fitted on to an orthodontic brace of a patient and used in between an X-ray projecting machine and an X-ray film. The implant positioning device includes a measuring standard member, that forms a detection region by means of a radiopaque material and has a positioning unit on one side of the detection region. The detection region is provided with at least one set of measuring scales. An encircled member is integrated with one side of the measuring standard member and forms an encircling main body that is connected to the orthodontic brace. A sleeved space is collectively formed by the encircling main body and the measuring standard member.

A method of administering a dental impression kit includes receiving, from a user, a first set of dental impressions of an upper dental arch and a lower dental arch of the user and identifying, based on the first set of dental impressions, one or more defects in at least one dental impression of the first set of dental impressions. The method includes sending a dental impression kit to the user and receiving a second set of dental impressions, the second set of dental impressions replacing the at least one dental impression having the one or more defects. The method includes manufacturing dental aligners specific to the user and being configured to reposition one or more teeth of the user.

A method for generating a digital model of dentition, executed at least in part by a computer, acquires a 3-D digital mesh that is representative of the dentition along a dental arch, including includes braces, teeth, and gingival tissue. The method modifies the 3-D digital mesh to generate a digital mesh dentition model by processing the digital mesh and automatically detecting one or more initial bracket positions from the acquired mesh, processing the initial bracket positions to identify bracket areas for braces that lie against tooth surfaces, identifying one or more brace wires extending between brackets, removing one or more brackets and one or more wires from the dentition model, and forming a reconstructed tooth surface within the digital mesh dentition model where the one or more brackets have been removed. The modified 3-D digital mesh dentition model is displayed, stored, or transmitted over a network to another computer.

An orthodontic appliance is disclosed that integrates an arch expander with a first segment and a second segment. The first and second segments are disposed on opposite sides of a midline of a dentition of an orthodontic patient. Both the first segment and the second segment are disposed over multiple teeth on the respective side of the midline, with a gap existing proceeding along the dentition between anterior-most portions of the first segment and the second segment. The arch expander is integrated with the first and second segments to exert an anteriorly-disposed expansion force on the patient's dentition through the first and second segments, for instance where the posterior-most location where these expansion forces are exerted corresponds with a first bicuspid on each side of a permanent the dentition.

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.

The invention is directed to a composition that safely removes a cured dental cement or resin from metal brackets, metal braces, and enamel surfaces of teeth. It contains eugenol, isoeugenol, methyl-eugenol or an isomer thereof. A method for removing orthodontic fixtures adhered with a dental cement or resin to the enamel surfaces of teeth from these surfaces by contacting the dental cement or resin with a composition containing eugenol.

A debonding tool for removal of orthodontic brackets includes a handle. An arm extends from the handle. The debonding tool includes first and second opposed fingers. A collar is translatable along the arm and operates to effect relative movement of the first and second opposed fingers between the open and closed positions.