Abstract: A premanufactured dental model base, and method, for supporting a cast dental model. The dental model base may be selectively connected to an articulator attachment plate which is adaptable for connecting the dental model base to a metal articulator. The same dental model base, at a user's option, may also be connected to a disposable articulator through a groove in the base that engages a disposable articulator tongue or by connecting a disposable articulator ball directly to a socket in the base. Thus, the dental model base may be conveniently used with either a metal articulator or a disposable articulator. In one embodiment, a concave socket at one end of the dental model base may engage an articulator ball or may engage the articulator attachment plate such that the attachment plate is detachably connected to the dental model base.

Abstract: A dental prostheses modeling system includes a tray having in an upper part thereof a trough for receiving a semi-liquid modeling material or casting material such as plaster of Paris or die stone, the trough having opposed vertical walls in which are formed alternating vertically disposed ribs and grooves for forming complementary shapes in sides of a casting molded in said tray, a base portion of which has in outer walls thereof alternating vertically disposed grooves and ribs, the trough having a frangible base plate which overlies an upwardly concave cavity for receiving liquid die stone after the upper casting has solidified, hardened and been removed, the base plate being broken and removed to uncover an elongated aperture joining the upper trough to the lower cavity enabling the cast to be ejected from the tray, pins fitted into selected portions of the casting base, the casting reinserted into the trough, and the tray inverted to receive liquid die stone which hardens to form a stone base matrix for i

Abstract: A base assembly for fabrication of false teeth includes a base, and a gum-like raised portion is provided on the said base, a plurality of protruding blocks are provided symmetrically and evenly at the interior and exterior arc edges on the raised portion, and positioning holes are provided between two opposite protruding blocks; a removable holddown plate with a configuration corresponding to the said raised portion is provided over the raised portion, and the holddown plate has a flat surface on the upper surface, has the recesses corresponding to the protruding blocks to be engaged with the protruding blocks and the mounting pins corresponding to the positioning holes to be engaged with the positioning holes on the lower surface. The time to fabricate false teeth is largely reduced and the fabrication accuracy of the false teeth is improved by using the base assembly of the present invention.

Abstract: Articulator (1), which may precisely reproduce the occlusion height in the mouth in preparing a denture excellent in occlusion properties and favorable to a patient, comprises: lower frame (23) provided with lower jaw model support (21) in its upper surface, detachably mounted on which support (21) is a lower jaw model (20); stand (30) mounted in a rear portion of the lower frame (23) to extend upright; upper frame (13) provided with an upper jaw model support (11) in its lower surface, detachably mounted on which support (11) is an upper jaw model (10); circular plates (40) which vary in thickness and are provided in each of the supports (11, 21), the circular plates (40) being selected so as to enable a jaw model mounting surface of each of the supports (11, 21) to be movable in parallel with each of the frames (13, 23).

Abstract: A dental articulating system to duplicate a patient's teeth for producing a dental prosthesis includes a pair of trays pivotally coupled together. A plurality of registration pins is disposable in a plurality of registration pin holes formed in at least one of the trays. A thin membrane is disposed across a registration pin hole to close off the registration pin hole and resist dental casting material from substantially filling the registration pin hole. The thin membrane is breakable by a registration pin inserted into the registration pin hole. A method for forming a dental model includes pressing a registration pin through a thin membrane extending across a registration pin hole on at least one of the trays of a dental articulator so that the registration pin breaks the thin membrane and extends through the thin membrane.

Abstract: An orthodontic model has a single block body made of catalyzing acrylic resin with a pair of prism boxes inversely positioned and interconnected by a pair of posterior walls with a window, the prism boxes have covers of the same shape and are provided with perimetral depressions for fitting to the boxes and to reach a welding of edges of each dental arch or the model, and a method of its production is proposed.

Abstract: A holding device that can be braced in a surveying machining together with an individual preparation model produced by dental laboratory techniques. The holding device has a mechanically stable frame with bores disposed at a distance (a) to one another, in which at least two holding pins are locked that can be displaced at least in the axial direction (A).

Abstract: A dental articulator for connecting upper and lower dental models made from dental impressions of teeth and for moving the mandible in opening and closing, protrusive and lateral motions generally comprises upper and lower arms each having a front end for attachment respectively to upper or lower model. The upper arm includes a pair of condylar slots for receiving journals of the lower arm such that the lower arm may perform the opening and closing motion, the protrusive movement, and lateral movement of the mandible. A cantilever spring attached to the upper arm biases the journals toward the centric occlusion position. Slot stops limit protrusive movement and axle stops limit lateral movement.

Abstract: Disclosed is a dental model articulator to connect the upper and the lower dental model casts. A mounting member is respectively mounted on each upper and lower cast, and a pair of elastic connecting members are connected to the mounting members. A vertical bar of the elastic connecting member has an S-type serpentine portion. The cast can smoothly move to the front, rear, left and right side by the S-type serpentine portion. A fastening member connects and disconnects the elastic connecting member and the mounting member by fastening a socket of the mounting member. A pivot member connects each elastic connecting member enabling to be pivoted. Whereby, the connecting ball of the elastic connecting member and the socket of the mounting member are connected by the fastening member, therefore the connecting ball can be connected to and disconnected from the socket.

Abstract: A dental model base having a cast stone core and method for making same. The stone core is cast within an encasement member. The encasement member is adapted for connection to an articulator.

Abstract: A model and die system has a working quadrant of parallelepiped construction and a opposing quadrant of the same construction. The working quadrant has an upper flat surface disposed in confronting relation to a lower flat surface of the opposing quadrant. Pin-receiving bores are formed in the working quadrant and mounting members depend from the opposing quadrant. Each cast tooth supported by the working quadrant has a pin depending from it and is fully seatable against the upper flat surface. Each cast tooth mounted on the upper flat surface is secured to a mounting post that depends from the upper flat surface. In a first embodiment, the quadrants are held in spaced apart, adjustable vertical relation to one another by a pair of parallel guideposts. In a second embodiment, an articulated hinge performs that function. In a third embodiment, a semicircular base opposes a semicircular top member.

Abstract: A dental prostheses modeling system includes a re-usable tray having in an upper part thereof a trough for receiving a semi-liquid casting material such as plaster of Paris or die stone, the trough having opposed vertical walls in which are formed alternating vertically disposed ribs and grooves for molding complementary shaped grooves and ribs in opposed sides of the base of a dental model casting molded in said tray. The trough has a base frame which overlies an upwardly concave lower cavity for receiving liquid die stone after the casting base has solidified, hardened and been removed. The base frame has therethrough an elongated aperture joining the upper trough to the lower cavity. A resilient insert is removably lodged in the base frame aperture to form therewith a liquid-tight seal, whereupon liquid die stone is poured into the upper trough to form the base of a dental model casting. After the casting has hardened, the insert is removed, and pins are fitted into selected portions of the cast base.

Abstract: Tray (10) for forming dental model comprises base wall (12) forming floor upon which dental casting material is poured. Spaced apart projections (14) extend upwardly from base wall (12). An upstanding axis of each projection (14) is substantially perpendicular to the upper face of base wall (12). Projections (14) are arranged in two rows, with the projections (14) in one row being offset from corresponding projections (14) in the other row. Sidewalls of each projection (14) taper inwardly at an angle of between about 82 to 88 degrees with the upper face of the base wall (12). Each projection (14) has a thickness at its base of about 3 to 7 millimeters. The projections (14) are spaced from each other at their bases by a distance of from 0 to 5 millimeters.

Abstract: A premanufactured dental model base, and method, for supporting a cast dental model. The dental model base has a dental model support surface adapted such that a user may create apertures in the dental model support surface. The apertures are adapted to receive pins that secure the dental model to the dental model base and for disengagably retaining a dental model segment representing a damaged tooth.

Abstract: A tooth model occlusion testing device comprises an upper jaw and a lower jaw that pivotally connect to each other. Two tooth model bases are respectively received in the upper and lower jaws, and are provided with a plurality of perforations to insert a tooth model. The upper and lower jaws are thereby capable of turning to an open and occluding position to evaluate the alignment of the upper and lower parts of the tooth model in the occluding position.

Abstract: Apparatus for verifying the interrelationship of upper and lower dental casts of a patient's teeth using a group of interocclusal records. The apparatus comprises a mounting surface with a clamping system to hold one of the upper and lower dental casts in an anchored position in order to receive the other of the dental casts in a supported position with an interocclusal record of the group insertable between the upper and lower dental casts. An indexing system is associated with the mounting surface for marking the dental cast in the supported position with index marks for the dental record. Alternatively, the supported dental cast may be mounted to a second, upper mounting surface and the upper mounting surface is marked with the index marks. The interrelationship of the dental casts is considered accurate if a second interocclusal record of the group results in the same at least three index marks being made to the dental cast in the supported position.

Abstract: Disclosed is a dental model articulator to connect the upper and the lower dental model casts. A mounting member is respectively mounted on each upper and lower cast, and a pair of elastic connecting members are connected to the mounting members. A vertical bar of the elastic connecting member has an S-type serpentine portion. The cast can smoothly move to the front, rear, left and right side by the S-type serpentine portion. A fastening member connects and disconnects the elastic connecting member and the mounting member by fastening a socket of the mounting member. A pivot member connects each elastic connecting member enabling to be pivoted. Whereby, the connecting ball of the elastic connecting member and the socket of the mounting member are connected by the fastening member, therefore the connecting ball can be connected to and disconnected from the socket.

Abstract: A mold for forming a dental model base includes a bottom portion having a rear wall and a side wall at a periphery thereof which extends upwards to define a cavity. The walls have upper edges which define an opening to the cavity. The mold further includes a shaping element for forming a connection element of a pivot mechanism at the dental model base which rotationally mates with a corresponding connection element of the articulator.

Abstract: Articulator (1), which may precisely reproduce the occlusion height in the mouth in preparing a denture excellent in occlusion properties and favorable to a patient, comprises: lower frame (23) provided with lower jaw model support (21) in its upper surface, detachably mounted on which support (21) is a lower jaw model (20); stand (30) mounted in a rear portion of the lower frame (23) to extend upright; upper frame (13) provided with an upper jaw model support (11) in its lower surface, detachably mounted on which support (11) is an upper jaw model (10); circular plates (40) which vary in thickness and are provided in each of the supports (11, 21), the circular plates (40) being selected so as to enable a jaw model mounting surface of each of the supports (11, 21) to be movable in parallel with each of the frames (13, 23).

Abstract: A tooth model occlusion testing device comprises an upper jaw and a lower jaw that pivotally connect to each other. Two tooth model bases are respectively received in the upper and lower jaws, and are provided with a plurality of perforations to insert a tooth model. The upper and lower jaws are thereby capable of turning to an open and occluding position to evaluate the alignment of the upper and lower parts of the tooth model in the occluding position.

Abstract: An aligning dental impression transfer method and apparatus is described in which the transfer of the bite registration in centric occlusion is accurately preserved from a triple tray impression to the positioning upon an articulator. At each stage of the casting of a working model the spatial relationship of existing dental structures are preserved. The cast model of the upper and lower dentition a in perfect registration on the articulator. In the process of manufacturing molded and machined parts, the limitations in dimensional accuracy exceed those desired by the dental patient. The patient is aware of binding or interfering “high spots” greater than 5 microns. The modern cavity mold and resulting thermoplastic parts cannot be expected to hold these dimensions. These variations in dimensional tolerance are eliminated in this invention. The articulator is equipped with an upper and lower frame with magnetic or other clamping means to hold the pin blocks in preliminary alignment.

Abstract: An aligning dental impression transfer method and apparatus is described in which the transfer of the bite registration in centric occlusion is accurately preserved from a triple tray impression to the positioning upon an articulator. At each stage of the casting of a working model the spatial relationship of existing dental structures are preserved.

Abstract: The invention is a supporting structure for a dental model in a dental articulator. The supporting structure includes an articulator plate and a base of the dental model. The base of the dental is provided with at least one cavity extending internally into the base from its bottom surface. The shape of the cavity is determined by the mold forming the base. In one embodiment, the cavity has straight walls. In another embodiment, the cavity is barrel-shaped. The articulator plate is provided with an alignment structure, which may include a pair of straight-walled projections, for use in combination with the straight-walled cavity, or a pair of curved springs, for use in combination with barrel-shaped cavity. The articulator plate is secured to the base by inserting and retaining the alignment structure inside the provided cavities. The articulator plate is provided with a shaft for attaching the dental model to a dental articulator.

Abstract: A dental articulator apparatus has an upper jaw member and a lower jaw member and the upper jaw member pivotally mount to the lower jaw member. Both upper and lower jaw members have a male projection part and a disposable-mounting arm for each member. The disposable-mounting arm is formed with a female receiving aperture sized to releasably mount within either of the male projection part of the upper and lower jaw members. Each male projection part has positional stops means engaging with recesses on the female receiving aperture for insuring that the disposable-mounting arms are always accurately located in the same unchanging position on the upper and lower jaw members. The disposable-mounting arms have different designs to accommodate different mediums for mounting the dental models to the disposable-mounting arms. The disposable-mounting arm with an oval-shaped bar design is for using plaster of paris. The disposable-mounting arm with a ball-shaped design is for using adhesives.

Abstract: A dental model tray (10) for use in forming a dental model from casting material poured thereon has upstanding projections (14) that extend into the hardened, dental model. The dental model tray (10) comprises a substantially planar base wall (12) that forms the floor upon which dental casting material is poured in forming a dental model. A plurality of spaced apart, elongate projections (14) extending upwardly from an upper face of the base wall (12) so that an elongate axis of each of the projections (14) is substantially perpendicular to the upper face of the base wall (12). The projections (14) and the base wall are formed integrally of polymeric material.

Abstract: The invention is a supporting structure for a dental model in a dental articulator. The supporting structure includes an articulator plate and a base of the dental model. The base of the dental is provided with at least one cavity extending internally into the base from its bottom surface. The shape of the cavity is determined by the mold forming the base. In one embodiment, the cavity has straight walls. In another embodiment, the cavity is barrel-shaped. The articulator plate is provided with an alignment structure, which may include a pair of straight-walled projections, for use in combination with the straight-walled cavity, or a pair of curved springs, for use in combination with barrel-shaped cavity. The articulator plate is secured to the base by inserting and retaining the alignment structure inside the provided cavities. The articulator plate is provided with a shaft for attaching the dental model to a dental articulator.

Abstract: The invention is a dental articulator with an extended range of motion of the maxilla relative to the mandible. The articulator includes a base and a mandibular assembly extending horizontally from that base. A mandibular plate is provided with a supporting structure, which is aligned with corresponding cavities in the mandibular base cast for easy removal and attachment. A base is further equipped with a vertical post slidingly positioned on a vertical shaft of that base. A maxillary assembly is retained on that post via a ball-and-socket arrangement and further via a horizontal shaft positioned in two semi-opened sockets and retained by a spring-biased pin. The maxillary assembly contains a plate supporting a removable base cast in a manner similar to that of the mandibular assembly. The articulator saves time and allows for easy positioning of the maxilla and mandible.

Abstract: An apparatus and method of use that include a dental model, a support that includes a mounting surface and a stretch release pressure sensitive adhesive located between the dental model and the support. The stretch release pressure sensitive adhesive attaches the dental model to the mounting surface. In an additional embodiment, a highly extensible and substantially inelastic backing having a layer of the stretch release pressure sensitive adhesive is used to attach the dental model to the mounting surface. The dental model and the support are separated without damage by stretching the stretch release pressure sensitive adhesive at an angle no greater than about 35 degrees from the mounting surface.

Abstract: Dental articulator apparatus includes a base articulator plate and a top articulator plate mounted on a support stanchion. On confronting surfaces of the top and base articulator plates are formed confronting mold cavities that receive dental “stone” mixed to a “workable” consistency so that the cavities can be filled with plastic “stone” to reconstruct from a “negative” impression a “positive” replica of a patient's teeth in stone. A press ejects the dental stone casting from the mold cavity in which it is formed. Embedded in the stone casting is a plastic sleeve. The plastic sleeve slidably accommodates a guide pin that passes through the cavity wall. To remove the dental stone casting from the mold cavity, the guide pin is first removed by sliding it out of the plastic sleeve. The ejected dental casting may be segmented to separate one stone “tooth” from another.

Abstract: A mounting disk 60 for a mandible die comprises an upper rotary plate 61 and a lower rotary plate 62. At their extremities, the two plates are rotatably fastened to each other by means of a pivot member 64. If the median points are offset, then the entire mounting disk 60 is turned around a rotational axis provided by a vertical rotary shaft 3 which is fitted to a base of an articulator screwed into a threaded hole 74, to thereby achieve a median registration. If molars are positionally offset in spite of the coincident medial points, then a locking rode 81 is loosened so that the upper rotary plate 61 can turn around a rotational axis defined by the pivot member 64 till the molars come into registration, after which the plates are firmly fixed by the locking rod 81. The angle of rotation at that time is read by use of a scale 76 formed on an arcuate surface 67. More precise fundamental data can thus be obtained for the jaw joint positional coordination.

Abstract: A dental modeling system includes a pair of supports for opposing dental casts which are articulated together by a pair of pivotally connected articulator arms. The support may include a plurality of integral registration pins extending from a top surface thereof which provide superior registration of a dental casts located thereon. The support may be directly attached to the articulator arm, or may be attached via a ball-and-socket joint, which, once located in the proper position, is glued in place. The articulator arm permits the castings to move toward and away from one another, and permits the replication of centric, excursive, and protrusive movements of the jaw. An alternative support for a dental cast includes a back member and a bottom member oriented at approximately 90° with respect to one another to form an L-shaped main body, onto which a dental cast may be attached.

Abstract: A mounting for being mounted to a dental cast and for receiving a ball portion of an articulator, the mounting comprising a tongue portion connected to a wall portion, the tongue portion adapted to being mounted to a dental cast, a cup portion being formed by a side connected to the wall portion, an opening formed in the side, and a fastening device for insertion through the opening for engagement with a ball portion of an articulator for securing a ball portion in place relative to the mounting.

Abstract: A dental model articulator includes two hinge-jointed arms, each arm having segments connected to a hinge joint having mating elements, one integral to each segment of an arm. One element includes two cymbals that are coaxial on a major hinge axis and concave facing which resiliently capture between them a node of the mating element on the other segment which has the form of opposed, outwardly facing convexities. Multiaxial motion between the segments of each arm is accomodated by the rotation of the convexities of the node within detents at the apices of the cymbals. The extremities of each arm terminate in cylindrical rod-like elements that are parallel to the major hinge axis. The rods engage with transverse, cylindrical channels either cut-in, molded-in or affixed to the models. With the models positioned in centric occlusal relationship and the arms adjacently positioned and engaged, the four rods are adhesively fixed in the channels.

Abstract: A dental modeling system includes a pair of supports for opposing dental casts which are articulated together by a pair of pivotally connected articulator arms. The support may include a plurality of integral registration pins extending from a top surface and a plurality of holes located in the top surface, which provide superior registration of a dental casts located thereon. The support may be directly attached to the articulator arm, or may be attached via a ball-and-socket joint, which, once located in the proper position, is glued in place. The articulator arm permits the castings to move toward and away from one another, and permits the replication of centric, excursive, and protrusive movements of the jaw. An alternative support for a dental cast includes a back member and a bottom member oriented at approximately 90° with respect to one another to form an L-shaped main body, onto which a dental cast may be attached.

Abstract: A premanufactured dental model base, and method, for supporting a cast dental model. The dental model base has a dental model support surface adapted such that a user may create apertures in the dental model support surface. The apertures are adapted to receive pins that secure the dental model to the dental model base and for disengagably retaining a dental model segment representing a damaged tooth.

Abstract: A mounting for being mounted to a dental cast and for receiving a ball portion of an articulator, the mounting comprising a tongue portion connected to a wall portion, the tongue portion adapted to being mounted to a dental cast, a cup portion being formed by a side connected to the wall portion, an opening formed in the side, and a fastening device for insertion through the opening for engagement with a ball portion of an articulator for securing a ball portion in place relative to the mounting.

Abstract: A dental cast tray assembly used to form a dental cast model comprises a base and a tray removably mounted on the base. The base includes a top surface which is recessed to form a support surface and a pair of restriction walls which protrude up from the support surface, each restriction wall including a plurality of surface irregularities. The base also includes an elongated, tubular projection which extends nearly the entire length of the base. The projection includes a rounded top, a pair of inwardly curved sidewalls and an elongated slot. The tray includes an elongated socket which includes a pair of thin fingers that are capable of flexion. The socket defines an opening into which the projection is capable of being releasably press-fit. The tray is notched to form first and second outer restriction walls, each outer restriction wall including a plurality of surface irregularities which are sized and shaped to engage the surface irregularities formed on the base.

Abstract: The instant invention provides articulators and molds for use in such a system. The molds for making the models are made in such a manner that the resulting models have recesses for accepting attachment means from an articulator system. The reciprocating hinge means of the articulators attached to the stone bearing the models are then connected through interacting hinge means. A curved arm travels in a channel to allow adjustment of alignment. The arm has, at each end, a part of a hinge means for interaction with a reciprocating hinge portion on an arm attached to the model of the opposing jaw/tooth model.

Abstract: A dental model base having a cast stone core and method for making same. The stone core is cast within an encasement member. The encasement member is adapted for connection to an articulator.

Abstract: The invention relates to an improved articulator (1) to realize gypsum models comprising a fixed lower arm (2) and an articulated upper arm (3), a respective impression bearing plate (5, 6) being provided on said lower (2) and upper (3) arms, removably coupled with the same, said articulator (1) being characterized in that the coupling between each arm (2, 3) and the respective plate (5, 6) is realized by means (9, 10; 12, 13) allowing the adjustment of the position of the plate (6, 6) with respect to the relevant arm (2, 3).

Abstract: An articulator has trays which have at least one opening with repeating broadened and narrowed regions allows for varying stabilization means to be used therewith. In one embodiment, the stone used for making the model acts as a stabilizing means without use of pins.

Abstract: The articulator of the present invention provides relative manipulation of dental casts for simulation of occlusal and masticatory movements of the mouth. The articulator consists of three parts—a lower frame, an upper frame, and a middle frame. The lower frame is comprised of an elongated rectangular box, a bracket, and a male hinge. The elongated box has an open bottom and an insert at the top with a series of grooves. The upper frame is comprised of an elongated, channeled surface, a deformable bracket, a female hinge, and a platform with holes. The bottom surface has flat areas to attach a pre-prepared cast with an adhesive. Outside of the flat areas are two rectangular boxes to pour the model stone, forming the opposing cast. A platform with three holes is provided for maintaining the original vertical height of the jaws. The horizontal section of the bracket may be softened by heating for quick bite correction and remounting.

Abstract: The articulator of the present invention provides relative manipulation of dental casts for simulation of occlusal and masticatory movements of the mouth. The articulator consists of three parts—a lower frame, an upper frame, and a middle frame. The lower frame is comprised of an elongated rectangular box, a bracket, and a male hinge. The elongated box has an open bottom and an insert at the top with a series of grooves. The upper frame is comprised of an elongated, channeled surface, a deformable bracket, a female hinge, and a platform with holes. The bottom surface has flat areas to attach a pre-prepared cast with an adhesive. Outside of the flat areas are two rectangular boxes to pour the model stone, forming the opposing cast. A platform with three holes is provided for maintaining the original vertical height of the jaws. The horizontal section of the bracket may be softened by heating for quick bite correction and remounting.

Abstract: A dental articulator (5) capable of reproducing or analyzing a physiological occlusion status by implementing a pressure receiving function and a traction function capable of operating in all the motion directions equivalently provided by a jaw joint function of a living body with a teeth plaster model fitted between upper and lower jaw frames, comprising an occlusal plane table (8) having the same anteversion angle as the occlusal plane oblique angle of a living body; a bite analysis plate (9) on which average positions of a spew center (91) and a posterior motion axis (92) are set at a plurality of positions and they are sketched in pairs with the average positions of the spew center on one side and those of the posterior motion axis on the other side of the plate; an incisal guidance plate (56) in which an inverted conical slope for mapping front-and-rear, right-and-left inclinations of the cusp is cut to allow the tip of an incisal guide to slide; and a transform plate (1) which is fitted using a lower ja

Abstract: A dental articulator system including a device and method of forming dental casts with a posterior clip. The clip has a line of holes that receive male bulbs from a dental articulator. The dental articulator has adjustable ball and socket joints, which are secured in place with a hand tightenable screw. The device does not require any glue; thus the dental articulator is easily adjusted and reusable.

Abstract: A dental modeling system includes a pair of supports for opposing dental casts which are articulated together by a pair of pivotally connected articulator arms. The support may include a plurality of integral registration pins extending from a top surface thereof which provide superior registration of a dental casts located thereon. The support may be directly attached to the articulator arm, or may be attached via a ball-and-socket joint, which, once located in the proper position, is glued in place. The articulator arm permits the castings to move toward and away from one another, and permits the replication of centric, excursive, and protrusive movements of the jaw. An alternative support for a dental cast includes a back member and a bottom member oriented at approximately 90° with respect to one another to form an L-shaped main body, onto which a dental cast may be attached.

Abstract: A dental modeling system includes a pair of supports for opposing dental casts which are articulated together by a pair of pivotally connected articulator arms. The support may include a plurality of integral registration pins extending from a top surface and a plurality of holes located in the top surface, which provide superior registration of a dental casts located thereon. The support may be directly attached to the articulator arm, or may be attached via a ball-and-socket joint, which, once located in the proper position, is glued in place. The articulator arm permits the castings to move toward and away from one another, and permits the replication of centric, excursive, and protrusive movements of the jaw. An alternative support for a dental cast includes a back member and a bottom member oriented at approximately 90° with respect to one another to form an L-shaped main body, onto which a dental cast may be attached.

Abstract: A mold for forming a dental model base includes a bottom portion having a rear wall and a side wall at a periphery thereof which extends upwards to define a cavity. The walls have upper edges which define an opening to the cavity. The mold further includes a shaping element for forming a connection element of a pivot mechanism at the dental model base which rotationally mates with a corresponding connection element of the articulator.

Abstract: A mounting disk 60 for a mandible die comprises an upper rotary plate 61 and a lower rotary plate 62. At their extremities, the two plates are rotatably fastened to each other by means of a pivot member 64. If the median points are offset, then the entire mounting disk 60 is turned around a rotational axis provided by a vertical rotary shaft 3 which is fitted to a base of an articulator screwed into a threaded hole 74, to thereby achieve a median registration. If molars are positionally offset in spite of the coincident medial points, then a locking rode 81 is loosened so that the upper rotary plate 61 can turn around a rotational axis defined by the pivot member 64 till the molars come into registration, after which the plates are firmly fixed by the locking rod 81. The angle of rotation at that time is read by use of a scale 76 formed on an arcuate surface 67. More precise fundamental data can thus be obtained for the jaw joint positional coordination.

Abstract: The present invention provides a low-cost, durable dental articulator that does not require the use of toxic or messy glues. The articulator is composed of a pair of bands that encircle and are attached to the plaster upper and lower teeth bases of the model, a pair of spheres that mechanically attach to the bands at any of several positions corresponding to the rear of the mouth on the dental model, and a hinge assembly simulating movement of the jaw and made of two arcs attached to each other at their ends by a hinge mechanism and having clamps at their apexes for attaching to the spheres. The dental model can be adjusted to mimic the occlusion of the patient by adjusting the position at which the spheres are attached to the bands and the position of the spheres in the clamps.