752 results about "Dentition" patented technology

Interactive, computer based orthodontist treatment planning, appliance design and appliance manufacturing is described. A scanner is described which acquires images of the dentition which are converted to three-dimensional frames of data. The data from the several frames are registered to each other to provide a complete three-dimensional virtual model of the dentition. Individual tooth objects are obtained from the virtual model. A computer-interactive software program provides for treatment planning, diagnosis and appliance from the virtual tooth models. A desired occlusion for the patient is obtained from the treatment planning software. The virtual model of the desired occlusion and the virtual model of the original dentition provide a base of information for custom manufacture of an orthodontic appliance. A variety of possible appliance and appliance manufacturing systems are contemplated, including customized archwires and customized devices for placement of off-the shelf brackets on the archwires, and removable orthodontic appliances.

A method and system for orthodontic treatment planning, evaluation and quality measurement is provided comprising a workstation having computing platform, a graphical user interface, a processor and a computer storage medium containing digitized records pertaining to a patient. The digitized records include image and other types of data. The computer storage medium further includes a set of software instructions providing graphical user interface tools for providing a user with access to the digitized records for planning orthodontic treatment of a patient. Also provided are reference databases for aiding in the decision process during treatment selection, treatment planning and treatment delivery and progress monitoring and evaluation. Also provided are parameter or criteria measurement techniques and generally acceptable thresholds, which can be updated through learning process and through acquisition of patient data. Once the treatment is planned, the virtual dentition model of the patient in the proposed treatment set-up or the target state is evaluated using several virtual model evaluation features and criteria.

Interactive, computer based orthodontist treatment planning, appliance design and appliance manufacturing is described. A scanner is described which acquires images of the dentition which are converted to three-dimensional frames of data. The data from the several frames are registered to each other to provide a complete three-dimensional virtual model of the dentition. Individual tooth objects are obtained from the virtual model. A computer-interactive software program provides for treatment planning, diagnosis and appliance from the virtual tooth models. A desired occlusion for the patient is obtained from the treatment planning software. The virtual model of the desired occlusion and the virtual model of the original dentition provide a base of information for custom manufacture of an orthodontic appliance. A variety of possible appliance and appliance manufacturing systems are contemplated, including customized archwires and customized devices for placement of off-the shelf brackets on the archwires, and removable orthodontic appliances.

The present invention relates to an orthodontic retainer to be fitted to an orthodontically treated dentition in order to fix the teeth in their orthodontic treatment state. In particular, the present invention relates to an orthodontic retainer that achieves, for example, improvement of strength of the retainer, improvement of wearing comfort and esthetics, reduction in cost, and improvement of a function as the retainer.

The invention relates to planning orthodontic treatment for a patient, including surgery, using biological constrains such as those arising from bone, soft tissue, and roots of patient's teeth. The invention disclosed herein provides capability to vary the movement ratio between the teeth and bone and soft tissue through treatment simulation to assess the risk factor associated with a particular treatment plan. The invention further provides capability to monitor results of the treatment to determine the actual movement ratio between the teeth and bone and soft tissue and update the database. Additionally, a method and apparatus are disclosed enabling an orthodontist or a user to create an unified three dimensional virtual craniofacial and dentition model of actual, as-is static and functional anatomy of a patient, from data representing facial bone structure; upper jaw and lower jaw; facial soft tissue; teeth including crowns and roots; information of the position of the roots relative to each other; and relative to the facial bone structure of the patient; obtained by scanning as-is anatomy of craniofacial and dentition structures of the patient with a volume scanning device; and data representing three dimensional virtual models of the patient's upper and lower gingiva, obtained from scanning the patient's upper and lower gingiva either (a) with a volume scanning device, or (a) with a surface scanning device. Such craniofacial and dentition models of the patient can be used in optimally planning treatment of a patient.

A patient's dentition is analysed to determine an orthodontic treatment plan by simulating an intervention in advance. 3D imaging techniques and computer technology are used to simulate and predict tooth movement as a function of the chosen treatment, i.e. a specific orthodontic appliance. In this way treatment options can be compared and the most optimal (shortest treatment time, lowest forces . . . ) treatment for each individual patient can be selected. Sub-steps of the tooth movement are not predefined but computed based on a simulation of orthodontic elements and wire as they would be used in the orthodontic treatment of the patient. This means that the sub-steps are calculated based on the relationship between the applied loads and the tooth movement; only one of both parameters can be chosen freely. Thus, either the tooth load is specified and applied in order to calculate the resulting tooth movement or vice versa the tooth movement is specified and applied in order to calculate the tooth load that should be applied. Moreover, the current invention allows predicting the time at which brackets and / or archwire should be changed, and comparing different treatment options with respect to tooth loading and duration.

Systems for manufacturing oral-based hearing aid appliances utilizing various manufacturing methods and apparatus are described herein. The oral appliance may have an electronic and / or transducer assembly for receiving incoming sounds and transmitting processed sounds via a vibrating transducer element coupled to a tooth or teeth. The oral appliance may be formed or fabricated via three-dimensional digital scanning systems or via impression molding to create a housing for the electronics and / or transducer assembly as well as to securely conform the appliance to the user's dentition.

An upper orthodontic appliance and / or a lower orthodontic appliance are provided for attaching to teeth in a mouth of a patient and / or straightening the teeth of the patient. The upper appliance and / or the lower appliance have a first area and / or a second area. The first area attaches to a first area of a dentition of the patient. The second area moves the teeth at a second area of the dentition of the patient. The upper appliance and / or the lower appliance have a single slot, sockets or a combination of both the slot and the sockets therein. The upper appliance and / or the lower appliance may be preformed, customized to receive the teeth of the patient or preformed and customized to receive the teeth of the patient. The upper appliance and / or the lower appliance move one or more teeth of the patient to correct an orthodontic condition of the patient. A wire is insertable into the upper appliance and / or the lower appliance. The wire bends to expand or to constrict the upper appliance and / or the lower appliance. As a result, the upper appliance and / or the lower appliance may abut an arch of the upper jaw and / or an arch of the lower jaw in a mouth of the patient to correct jaw misalignment in the mouth of the patient.

A method and apparatus for facilitating placement and evaluation of virtual appliances on virtual teeth of an orthodontic patient are described. Positioning references comprising bracket height, occlusal plane, or any arbitrary plane are provided to facilitate desired placement of virtual appliances on virtual teeth model. The process can be applied with any dentition state of a patient such as malocclusion, target state from treatment, or intermediate monitored state during the course of a treatment. An unified workstation for treatment planning provides the computer software tools for verification, simulation and evaluation of the virtual appliance placement. The process enables proper planning of treatment for an orthodontic patient suffering from malocclusion involving bonding of virtual brackets to the surface of the patient's virtual teeth with archwires placed in the slots of the brackets, so as to realize the desired results from the treatment in the most desired manner.

A dental curing apparatus for light-sensitive materials is disclosed. A light source for curing an adhesive is housed within a clear, transparent and / or translucent housing constructed of either a solid, such as a poured resin, or a hollow structure. The housing shape is selected to conform to an approximate shape of dentition. The housing is mountable within a disposable oversertion sheath. During use, the light source for curing an adhesive transmits light which cures the adhesives, sealants and / or whitening or coloring agents.

A method is described for taking a three-dimensional virtual model of the dentition and associated anatomical structures of a patient and isolating individual teeth from the rest of the anatomical structure, e.g. gums, to thereby produce individual, virtual three-dimensional tooth objects. The individual tooth objects can be displayed on the display of an orthodontic workstation and moved independently from each other, and thereby form the basis of planning treatment for the patient. The individual, virtual three-dimensional tooth objects are created by comparing the virtual model of the dentition to virtual, three-dimensional template teeth that are stored in memory in a process described in detail herein. The template teeth can include roots as well as crowns. The template teeth can be stored objects acquired from some external source or alternatively developed from a database of patient scans. Virtual three-dimensional brackets are also stored in the memory of the workstation. The virtual brackets can be placed on the virtual teeth and moved relative to the teeth as needed in a preliminary step in treatment planning.

Method and system for receiving one or more dentition conditions of a patient, associating a first set of one or more treatment goals based on the one or more dentition conditions, generating a case difficulty assessment based on the one or more treatment goals, detecting a modification to the case difficulty assessment, retrieving a second set of one or more treatment goals associated with the modified case difficulty assessment, and displaying the second set of one or more treatment goals are provided.

A digitally-based method is described for the design and production of customized removable dental appliances. The plastic component of custom appliances is designed using software, and milled directly over a plaster model of the dentition. A patient's upper, lower, and bite-registered arches are digitized, registered to a bite or centric occlusion position, and articulated in software using either an average geometry or the geometry of a specific articulator. Appliance design is performed by defining the desired plastic surfaces and margins as dictated by the relative movement and positions of the arches as functionally required for a specific appliance. Standard CAM software is used to read the design file and command a multiaxis machine center to mill the plastic while directly on a plaster model.

A process for creating a dental model to avoid periodontal defects during planned dental work includes obtaining CT scan data and optical scan data of a patient's dentition and integrating the CT scan data and the optical scan data by at least one of surface to surface registration, registration of radiographic markers, and registration of optical markers of known dimensions, to produce a dental model that includes the dentition and underlying bone and root structures. The process then segments anatomic sites of the tooth roots and underlying bone. A plan for the dental work is then generated based on the segmented anatomic sites, whereby the plan avoids periodontal defects based on the knowledge of the anatomic sites of the roots and underlying cortical bones in the dental model.

Dentition three-dimensional data and jaw-bone three-dimensional data are collected from a patient and they are combined. According to the combined data, dental crown data for making up for data on a lost tooth and occlusion data on a dental crown represented by the dental crown data are created. When an occlusion force according to the occlusion data is exerted on the occlusion face of a dental crown, a mechanical evaluation factor is produced in a jaw bone. The mechanical evaluation factor produced near the place where an artificial tooth root supporting a dental crown is to be implanted is calculated. The implantation place is determined so that the mechanical evaluation factor may be smaller and the mechanical load on the jaw bone from the opposed tooth during mastication may be lighter.

A dental implant abutment for attaching a dental prosthesis within a patient's mouth. The abutment is a single unit structure fabricated of a ceramic material, multicolored throughout to match the color of the dental prosthesis, the surrounding dentition and the surrounding gingival tissue.

A removable magnetic dental appliance is provided. The magnetic dental appliance can be used in the treatment of various conditions, including but not limited to, snoring, sleep apnea, some forms of temporomandibular joint pain or inflammation, myofascial pain or bruxism. The appliance comprises an upper arch attachment member and a lower arch attachment member, each for removably engaging at least a portion of the dentition. A magnetic component is positioned anteriorly on one of the upper arch attachment member or the lower arch attachment member and a magnet-attracted element is provided on the other arch attachment member for magnetic engagement with the magnetic component when the upper and lower arch attachment members are substantially vertically aligned. The appliance uses magnetic force to selectively position the mandible while still permitting movement of the mandible relative to the maxilla for improved comfort. A use of the magnetic dental appliance and a kit comprising the magnetic dental appliance are also provided

A method for concurrently measuring a force exerted upon each of a plurality of teeth is disclosed. A dentition crown connecting rod associated with a force gauge is positioned such that a dentition crown coupled to the dentition crown connecting rod may be received within a corresponding cavity of a reference aligner. A measurement aligner is then applied to the dentition crown, wherein the dentition crown is positioned to be received within a corresponding cavity of a reference aligner. A force exerted on the dentition crown by the measurement aligner is then calculated.

A dental article is fabricated from an SMC material using three-dimensional data captured from natural dentition to guide a computer-controlled milling machine. The three-dimensional data may include scans of an original tooth structure and a prepared tooth surface to characterize all surfaces of a dental article, or certain features may be created within a computer-assisted design environment taking account of occlusion, proximal contacts, and the like. In addition the model applied to a computer-controlled milling machine may account for shrinkage of the SMC material during any post-milling curing steps in order to ensure an accurate fit to the prepared tooth surface.

Provided herein are systems and methods for detecting the eruption state (e.g., tooth type and / or eruption status) of a target tooth. A patient's dentition may be scanned and / or segmented. A target tooth may be identified. Dental features, principal component analysis (PCA) features, and / or other features may be extracted and compared to those of other teeth, such as those obtained through automated machine learning systems. A detector can identify and / or output the eruption state of the target tooth, such as whether the target tooth is a fully erupted primary tooth, a permanent partially erupted / un-erupted tooth, or a fully erupted permanent tooth.