摘要:
A bonding base and method of making a base for a ceramic orthodontic bracket to provide mechanical retention between the bracket and the tooth so that the bracket may be debonded by the failure of the mechanical bond at the bracket/bond interface when the shear strength of the bond is exceeded. The bracket bonding base includes a glass frit fired to the tooth-attaching side of the bracket and a layer of textured aluminum oxide fired to the frit. The method of making the bonding base includes controlled preparation of a glass ceramic glaze (frit) to have a coefficient of thermal expansion slightly less than that of the bracket and application of the glaze to the bracket base. Thereafter, a proper firing sequence transforms the glaze into a sintered glass ceramic. A specially prepared textured substance is then applied to the sintered ceramic glaze and the bracket is again fired under controlled conditions in order to fuse the textured substance with the glaze.
摘要:
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.
摘要:
A self-ligating bracket includes a bracket body with a mesial and a distal channel. A spring clip includes a distal arm with a distal arm body and a distal finger and a mesial arm with a mesial arm body and a mesial finger. The spring clip is slidably secured within the bracket body by a sliding engagement of the distal arm with the distal channel and the mesial arm with the mesial channel. The spring clip is movable between an open position and a closed position wherein in the open position, the arch wire slot is unobstructed and in the closed position the mesial finger and distal finger extend into and across the arch wire slot to occlude the arch wire slot.
摘要:
An indirect bonding tray includes a least on tooth position each tooth portion includes an occlusal surface that conforms to an occlusal surface of an associated tooth of a patient's dentition. At least one of bracket arm includes a bracket arm tip configured to engage an orthodontic bracket. The at least one bracket arm movably attached to at least one tooth portion to move between a first position and second position relative to a bonding surface of the associated tooth. In the second position, the bracket arm is in a position configured to hold an orthodontic bracket in a predetermined treatment position relative to the bonding surface of the associated tooth.
摘要:
An orthodontic appliance includes a telescopic assembly with an end tube and a telescopic member. A distal connector secured to the end tube at a generally distal end of the telescopic assembly. An end cap engages the distal end of the end tube. A spring is secured to the end cap and extends coaxially within the cover and the end tube. The spring is configured to impart a biasing force against the distal end of the telescopic member.
摘要:
An indirect bonding tray includes a least one tooth portion. Each tooth portion includes an occlusal surface that conforms to an occlusal surface of an associated tooth of a patient's dentition. At least one arm includes an arm tip configured to engage an orthodontic bracket. The at least one arm is movably attached to at least one tooth portion to move between a first position and second position relative to a bonding surface of the associated tooth. In the second position, the arm is in a position configured to hold an orthodontic bracket in a predetermined treatment position relative to the bonding surface of the associated tooth.
摘要:
An orthodontic appliance includes a telescopic assembly with an end tube and a telescopic member. A distal connector secured to the end tube at a generally distal end of the telescopic assembly. An end cap engages the distal end of the end tube. A spring is secured to the end cap and extends coaxially within the cover and the end tube. The spring is configured to impart a biasing force against the distal end of the telescopic member.