摘要:
In general, the invention relates to techniques for registering a three-dimensional (3D) coordinate system of a physical model of a patient's tooth structure to a 3D coordinate system of a virtual model of the same tooth structure. Techniques are described to register the complex geometries of the physical and virtual tooth structures by using a known physical characteristic of a pedestal associated with the physical model.
摘要:
An aesthetic, partially removable orthodontic appliance is described, including a polymeric body that conforms to the lingual soft tissue and at least one wire member extending from the polymeric body. Each wire member releasably engages with a respective anchor that is, in turn, connected to the lingual surface of a respective tooth when the polymeric body is moved in a generally gingival direction into abutting relationship with the lingual soft tissue. Other features of the appliance include self-guiding magnetic couplings and couplings based on interlocking mechanical structures that provide releasable engagement between the removable section and the anchors, as well as related methods for making and using the same.
摘要:
The present invention provides a method that uses digital data, such as that obtained from an intraoral scanner, to fabricate a wide range of customized laboratory appliances. The digital data is used to form a negative mold, which is in turn used to make a physical dental model. The negative mold is configured such that it can be flexed, stretched, fractured or disassembled to release the physical dental model. The physical dental model is then used for fabricating an orthodontic laboratory appliance.
摘要:
An indirect bonding apparatus is made by initially placing spacer material over a replica of the patient's tooth structure. A tray is then formed over the spacer material and hardened. Next, the spacer material is removed from the tooth replica and orthodontic appliances are placed on the replica at desired locations. A matrix material is placed between the tray and the replica and allowed to harden. Optionally, the apparatus includes features for facilitating removal of the transfer apparatus after the bonding procedure has been completed, and features for applying firm, uniform pressure to the appliances during the bonding procedure. Other aspects of indirect bonding are also described.
摘要:
An indirect bonding apparatus is made by initially placing spacer material over a replica of the patient's tooth structure. A tray is then formed over the spacer material and hardened. Next, the spacer material is removed from the tooth replica and orthodontic appliances are placed on the replica at desired locations. A matrix material is placed between the tray and the replica and allowed to harden. Optionally, the apparatus includes features for facilitating removal of the transfer apparatus after the bonding procedure has been completed, and features for applying firm, uniform pressure to the appliances during the bonding procedure. Other aspects of indirect bonding are also described.
摘要:
An indirect bonding tray for orthodontic bonding procedures has moisture control structure that is located next to the patient's teeth when the tray is placed over the patient's dental arch. The moisture control structure tends to draw moisture away from the adhesive used to bond the appliances to the teeth. As a consequence, the probability that the resulting bond between the appliances and the teeth is adversely affected by the presence of moisture, blood or other fluids in the patient's mouth is decreased.
摘要:
An orthodontic set-up tray includes at least two sections, and each section includes at least one receptacle for receiving an orthodontic appliance. A coupling movably connects the sections together to enable relative movement between the sections. The coupling advantageously permits the overall size of the set-up tray to be reduced or enlarged as may be desired by the practitioner. Optionally, the coupling is a releasable coupling that enables the sections to be detached from one another.
摘要:
In general, the invention relates to techniques for registering a three-dimensional (3D) coordinate system of a physical model of a patient's tooth structure to a 3D coordinate system of a virtual model of the same tooth structure. Techniques are described to register the complex geometries of the physical and virtual tooth structures by using a known physical characteristic of a pedestal associated with the physical model.
摘要:
A virtual model of a dental patient's dentition is provided by obtaining a digital data file of the patient's teeth and orthodontic appliances connected to the teeth, and then combining data from the data file with other data that represents surfaces of the teeth underlying the appliances. The virtual model is useful in preparing a physical model of the patient's current dentition that can be used, for example, to make a dental retainer. Advantageously, the retainer can be fabricated before the orthodontic appliances are disconnected from the patient's teeth and ready for use as soon as the patient's teeth have reached their desired positions in the oral cavity
摘要:
An orthodontic kit includes brackets and at least one archwire for a single patient. The brackets and archwire are provided in a sealed container that is sterilized after the container is closed. Optionally, the kit includes all or at least some of the additional orthodontic articles desired for a bonding procedure, such as buccal tubes or buccal tube preweld assemblies, ligatures, bonding compositions, single use hand instruments and articles for moisture control.