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.
摘要:
Apparatus for use in indirect bonding of orthodontic appliances includes a container having a chamber and a placement device received in the chamber. At least one orthodontic appliance is releasably connected to the placement device and has a base with a contour that is a replica of a portion of the patient's tooth structure. A bonding composition for bonding the appliance to the patient's tooth structure is applied to the base before the container is closed by the manufacturer, such that the practitioner can simply remove the placement device from the chamber and immediately transfer the appliances to the patient's teeth.
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 orthodontic appliance such as a bracket or buccal tube has an overall, low profile shape. The appliance includes a base having a thickness that is less in regions adjacent the archwire slot as compared to remaining regions. In certain embodiments, the base is provided with protrusions that extend into the archwire slot for controlling rotation of the associated tooth. The resulting low profile of the appliance enhances its aesthetic appearance and helps to avoid impingement of the appliance and the attached archwire on adjacent soft tissue in the oral cavity.
摘要:
An appliance used in orthodontic treatment includes a retaining guide that extends outwardly in an occlusal and/or a gingival direction. The retaining guide presents a smoothly contoured, domed shape having a relatively low profile for avoiding contact with opposing dentition or orthodontic appliances that are connected to opposing dentition. The retaining guide is useful for keeping a wire segment or other item in place and in contact with a body of the appliance so that the item does not detach from the appliance during the course of treatment. The retaining guide is particularly useful for keeping tieback loops and other items made from wire segments in place.
摘要:
An orthodontic bracket has tiewings with cavities for receiving an attachment, such as a hook or a ligating latch. Optionally, the bracket is made in two or more sections or bodies that preferably have cross-sectional configurations similar to each other when viewed in directions perpendicular to the archwire slot. When the bodies are assembled to each other, tiewing portions of each section are located adjacent each other to present a single tiewing.
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.