36 results about "Occlusal appliance" patented technology

The group of inventions relates to medical technology, and more particularly to means for dynamic virtual articulation. One of the inventions is a method for using a dynamic virtual articulator for simulating occlusion during a change in the initial position of the lower jaw or fragments thereof, and for modeling the position of the teeth in relation to one another and the position and shape of false teeth, said method being carried out with the aid of a computer. The method includes the following steps: providing a virtual articulator comprising a virtual three-dimensional model of the upperjaw and dental arch and a virtual three-dimensional model of the lower jaw and dental arch, resembling the upper jaw and upper teeth and the lower jaw and lower teeth, respectively, of the patient; and providing simulated movements of the virtual upper jaw and the virtual lower jaw in relation to one another for simulating dynamic occlusion, during which penetrating and non-penetrating contact mayoccur between teeth in the virtual upper and virtual lower jaw. Providing the virtual articulator further includes providing virtual three-dimensional models of the temporomandibular joints, resembling the heads of the lower jaw, the mandibular fossae, and the articular tubercles of the temporal bones, and carrying out simulated movements of the jaws in relation to one another is preceded by clinically or virtually setting initial and final positions. Furthermore, the virtual surfaces of the heads of the lower jaw and the virtual surfaces of the articular tubercles and the mandibular fossae of the temporal bones of the patient are disengaged. A second invention is a non-volatile machine-readable medium with a stored code containing instructions which, when executed, allow the proposed method to be carried out. The group of inventions makes it possible to provide a virtual articulator that simulates as closely as possible the actual processes occurring in the patient's mouth.

A denture base which is used in a dental therapy field and capable of providing an occlusion suitable for each patient, wherein a denture is arranged along an occlusion curve represented based on the radius of curvature R of an optimal dentition determined from an X-ray photograph of a patient's temporal region and the center point set on a resultant force line representing the direction of a standard resultant force of forces produced at occluding. As the standard resultant force line, a line connecting a point at the front edge center of a frontal sinus on the X-ray photograph of the temporal region with an angle of lower jaw can be used. This denture base uses an articulator provided with a length-adjustable pendulum-shaped arm having a protrusion at the tip end thereof and supported three-dimensionally pivotally to bring a model supported on an upper jaw supporter and a lower jaw supporter into contact with the claw of the arm with the arm pivoting to thereby three-dimensionally display an occlusion curve having a radius of curvature equal to the effective length of the arm and fix the denture along the occlusion line.

A dental articulator apparatus and method of forming dental casts utilizing a dental articulator having pivotally connected upper and lower arms that each have a ball socket which receives a ball at the outer end of a respective model anchor, the opposed end of which is cast into a dental model. The model anchor ball is adjustably secured in the ball socket of the articulator arms by a set screw coupled with a rotatable magnetic extension rod that are installed, removed, advanced, and retracted as a unit and allow relative rotation between the set screw and the extension rod to facilitate fitting and positioning the ball in the socket when the set screw is loosened, and eliminate manually installing and positioning separate small shims and plungers that can be accidentally dropped and lost.

Provided is an instrument capable of performing bite checking after accurately acquiring the occlusal vertical dimension within the oral cavity of a patient. Using these instruments in the oral cavitymakes it possible to perform bite checking in a state in which occlusion stability is reproduced by point contact, and to produce a prosthetic device. In addition, a prosthetic device can be producedirrespective of the experience of the operator by an articulator capable of reproducing the shape and movement of the mandible.

The method for articulator adjustment and gnathological instruments for work under this method find application in dental medicine and laboratory dental techniques. These and other goals of this invention are achieved with the measurement of the individual parameters of the patient's mandibular transversal hinge axis in the three planes: transversal, frontal and sagittal, including the following steps: measurement of inter-condylar distance; measurement of the distance between the condylar axis and the occlusal plane; measurement of the distance between the condylar axis and central incisors with a face-bow and bite-tray (FIGS. 1,10,11,12); recording of values; simultaneous fixation in the articulator in minimal gathered position of the manufactured in advance two primary working models juxtaposed in central position: a mandibular lower working model to the working plate of the lower articulator frame and a maxillary upper working model to the opposite working plate, which is connected in a telescopic way to the upper articulator frame (FIGS. 2,3,4,5,6,13); coincidence of the mandibular transversal hinge axis of a patient in terms of measured values of his individual parameters and the articulator transversal hinge axis (FIGS. 7,8,9,14); and closure of this articulator in an individual spread-out position.