Abstract: An apparatus for use in dentistry to obtain positional data related to movement of a mandible about a maxilla comprises a rigid support frame for supporting a maxilla support member, a positionable mandibular member and sensing assemblies. The support member fixedly attaches to the support frame. The mandibular member is positionable proximate the maxilla member. The sensing assemblies attach to the support frame and connect to the mandibular member to obtain positional data related to the movement of the mandibular member. The positional data is collected by a computing device and stored in a data storage medium as time history files. The files can then be transformed into usable information to replicate the mandibular movement in real time either virtually or mechanically.

Abstract: The present invention relates to an articulator capable of completely and faithfully reproducing movements of a mandibular cast and maxillary cast. The articulator introduces a suspended mandibular member, the mandible being similar to that of in human beings. The mandible is suspended from the condyles in the glenoid fossa of the tempero mandibular joint. The articulator and the mandibular member are suspended between the maxillary member and the base representing the feet or base in a human. The articulator has a mechanism for anterior incisal guidance by providing incisal pins attached to the mandibular member. The incisal pin attached to the mandibular member creates the anterior guidance on an incisal table resting on the base. The articulator creates the possibility of the condyle executing pure rotary movement in the centric position until a vertical opening between the upper and lower jaws.

Abstract: A dental model articulator of the type that has separable complementary articulation members is connected to a registration object having compatible complementary articulation members. The dental arches of each dental model articulator half is scanned with the reference object to give the axis of the articulator model. This facilitates generating a virtual dental model.

Abstract: A dental articulator capable of finely adjusting a three-dimensional articulation posture and exerting a secure fastening force by a lever is provided. The dental articulator includes a lower grip plate, a column, an arm, and an upper grip plate, wherein a first ball and a second ball are disposed between the arm and the upper grip plate, and wherein the dental articulator further comprises: a first clamp block having spherical recesses contacting with the first and second balls; a second clamp block having spherical recesses contacting with the first and second balls; a lever disposed on an outer surface of the second clamp block; an engaging bolt passing through the lever and the second clamp block into the first clamp block; and fastening bolts engaged into the lever to shorten a distance between the first and second clamp blocks.

Abstract: The present disclosure relates to a method and an apparatus for recording and reproducing the path of insertion of a cast on surveyors. In the method, the accuracy and speed of recording the path of insertion is easily effected with the help of a scoring tool and an adjustable surveyor table on which a cast is secured and the spatial relationship of the cast with respect to the scoring tool can be easily adjusted, facilitating parallel line making on the cast in one aspect and the reorientation of the cast in another aspect.

Abstract: A dental articulator having an upper support member for supporting a dental cast and a lower support member for supporting a second dental cast. A polycentric hinge joint is provided for simulating the temporomandibular joint of a patient. The polycentric hinge joint comprises a fossae block secured to the upper support member and a condyle member secured to the lower support member which engages a fossae recess in the fossae block. A spring is provided for securing the lower support member to the upper support member and simulating the muscles used for mastication. A pair of wires are provided for simulating the ligaments of a patient. The upper end of each wire passes through an opening in the upper support member. The lower end of each wire is secured to the lower support member. A limiting block is provided on the upper end of each of the wires so as to restrict its movement.

Abstract: This invention relates to a physiological stereo articulator comprises a maxillary mechanism and a mandibular mechanism, and the lower frame member in the mandibular mechanism can turn about a center which is shifting while opening and closing as the human mandible does, and at the same time with the shifting of the center of turning, the vertical swinging of the lower frame member is caused. This construction permits simulation of the movement of the lower frame member to practical movement of the human mandible.

Abstract: The invention describes a model operating instrument for upper jaw osteotomy, with a basic frame on which it is possible to adjust the position of the two temporo-maxillary articular cups; from the side, there protrudes into the osteotomy plane a universally mounted disc which is rotatable in its own plane and which is displaceable in three directions at right-angles to one another, on which disc it is possible to fix an upper jaw model keyed with a lower jaw model.

Abstract: A method and device for reconstruction of teeth in an upper jaw wherein anterior guidance of the natural state is achieved even when front teeth are missing through the scanning of the contour curve of a tooth in the sagittal plane and the transferring by copying of the curve to each tooth to be reconstructed.

Abstract: An articulator for the accurate but resilient positioning of a pair of dental model casts, to provide convenient assess for a technician working on the casts. The articulator (10) comprises a resilient frame (20) having hinged intermediate portions (28), (30) which are attached to mating end portions (22), (24). The frame (20) is attached to a pair of mounting elements (50), (52) by means of connecting rods (64), (66) the balls (68), (70), (72), (74) of which are received in sockets (54), (56), of the mounting elements and sockets (60), (62) of the intermediate portions (28), (30) of the frame (20). The mounting elements are cast into dental model casts (12) and (14). When appropriate positioning of the elements is achieved, an adhesive is applied between the sockets and the balls of the connecting rods so as to maintain the desired position of the casts and articulator relative to each other.

Abstract: A dental articulator wherein each of two pivotally joined arms carries a plate-like first support and a shallow trough-shaped second support which confines a mass of synthetic thermoplastic material serving to couple the second support to the first support. If the position of the second support relative to the first support is to be adjusted, the mass of thermoplastic material is plasticized so that such mass then acts not unlike a universal joint which enables the two supports to assume any one of an infinite number of different positions relative to each other. Each second support can carry a dental model and can be provided with a magnetic insert to attract a complementary magnet of the model.

Abstract: An occludator for an artificial denture having an upper holder for holding an upper artificial denture and a lower holder for holding a lower artificial denture. The upper and lower holders are pivotable to facilitate an observation of occlusion and adjustable to obtain neutral occlusion.