摘要:
Apparatus for allowing the photoactivation of photosensitive composites used especially in the dental field: A case containing a power supply unit electrically controlled by a central electronic processing unit. A light source connected to the supply unit and which is formed by a plurality of light-emitting diodes. The diodes are associated with a concentrating device making it possible to concentrate in an optimal manner, at a given point, the light emanating from all the emissive areas of the diodes. The concentrating device includes a respective optical fiber associated with each light emitting diode.
摘要:
For maxillary molar distalization a newly developed maxillary molar distalization appliance is introduced. Maxillary first molars and first premolars were banded. On the palatal side of the Class II first molar bands 0.45 inch diameter tubes were soldered. First premolar band were attached with 1.1 mm in diameter s.s. retaining wires to a wide acrylic Nance button. The acrylic button also included an anterior bit plane. The purpose of creating an anterior bit plane was to disocclude the posterior teeth, enhance the molar distalization and correct the anterior deep bit. On the palatal side of molars 0.9 mm in diameter s.s. wires were embedded into the acrylic about 5 mm apical to the gingival margin of the first molars, which passed through the tube and oriented parallel to the occlusal plane. This force system would allow applying consistent force at the level of center of resistance of the first molars.
摘要:
An orthodontic bracket has a base with a slot configured to receive an archwire. A cover is hingedly fastened to the base and is operable between an open and closed position. The cover covers at least a portion of the slot on the base when in the closed position. A spring element extends between the base and the cover.
摘要:
The present invention provides methods and systems of repositioning teeth for use in orthodontic treatment, with particular applicability to removable elastic repositioning appliances. Such appliances may be challenged by traditional tooth movements which intrude the crown of the tooth or present tooth positions which reduce available points of purchase. These challenges may be overcome with a series of tooth movements in which a tooth is translated in a “root-first” position. The movements may take advantage of the inherent characteristics of elastic repositioning appliances in translating a tooth from a first position to a desired position along a gingival plane.
摘要:
An osteogenic support device for an orthodontic treatment comprises a platform, lower and upper projections extending downwardly and upwardly from the platform. The upper projection is substantially tapered from the platform toward a cap. The upper protection has a through opening substantially perpendicular to an axis of the lower projection. A first end of the elastic wire is hooked between the cap and the platform, and a second end of the elastic wire is hooked with an orthodontic wire which links each bracket attached on teeth of the orthodontic patient.
摘要:
A new a telescoping assembly or advancing sheath and a expansion complex are provided for a maxillary or mandibular arch expander. The advancing sheath is provided with a spring which extends between a forward end of the anterior tube and a forward end of the posterior tube. The spring urges the anterior tube rearwardly relative to the posterior tube to compensate for jaw pressure and to help prevent the jaw pressure from threading the anterior tube rearwardly. The expansion complex includes an outer housing and an advancing member which is telescopically received in the outer housing. The two portions of the expansion complex are received in opposed halves of a plate which fits against the mandibular or maxillary arch. An threaded rod and a parallel post extend through the housing. An activation nut is received on the threaded rod, and an activation plate is journaled about both the rod and the post. The activation plate is moved by movement of the activation nut. A spring is journaled about the post between the forward end of the advancing member and the activation plate. The nut is accessible through a channel in the top surface of the housing and advancing member.
摘要:
A computer obtains a digital model of a patient's dentition, including a dental model representing the patient's teeth at a set of initial positions and a gingival model representing gum tissue surrounding the teeth. The computer then derives from the digital model an expected deformation of the gum tissue as the teeth move from the initial positions to another set of positions.
摘要:
The current invention provides a device for holding dental abutments such as healing caps, healing screws, contoured healing abutments, PME (precision margin esthetics) abutments, PME impression pins, hexed transfer assemblies, straight and angled fixed system components, hexed coping screws or any dental implant parts when the object is being inserted or otherwise located into a patient's mouth. The device is tweezer-like and is designed to hold a dental abutment having a central axis. The device includes a pair of substantially identical members that are joined together at one of the ends and each have a free end. The members are disposed in the V-like configuration with the joined ends interconnected and the free end spaced apart so that when the members are squeezed towards one another, the free ends are brought into contact. Each of the members has a handle portion including the joined end, and an offset gripping portion. The gripping portion of each member has a junction segment which is joined to the handle portion and forms an interior angle in the range of 70-110 degrees with the handle portion. The gripping portion also has a grip segment with a first end joined to the junction segment and a second end configured to grip the dental abutment through cooperative action with the second end of the grip segment of the other member. When gripped, the dental abutment is retained at angle in the range of 60-90 degrees to the handle portion.
摘要:
The present invention provides a composite orthodontic device including a base of a first material, with a first surface configured to facilitate attachment of the base to a tooth and a second surface configured to provide a mechanical interlock facilitating attachment of a bumper formed of a second material different from the first material.
摘要:
A combined internal polygonal and locking drive tool (10,10′) used to engage a mating external implant mounting and drive fixture (12). The locking drive has an internal tapered locking drive section (10b) which is longitudinally in series with an internal polygonal section (10d) and has its largest diameter slightly larger than the smallest diameter of the internal polygonal portion. The combined delivery and drive tool can be incorporated with an external hand drive or power drill drive surface configuration.