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: This invention provides a device for use in making dental models comprising a tray support a having an opening and a tray having an inferior surface with a projection from said inferior surface of said tray, wherein said projection of said tray fits into said opening in said tray support, said tray support having attached thereto hinge portions which are capable of interaction with hinge portions from a second tray support to form a completed hinge means.

Abstract: A cover for a working cast makes it extremely easy to mount and dismount a working cast to and from an articulator, improves workability, and keeps the working cast as pollution-free as possible. An articulator is also proposed. The articulator has a base and a support member each carrying a rotatable and pivotable retainer plate. Each retainer plate can be fixed in position by turning a knob. Each retainer plate has a magnet plate on its outer surface. On the other hand, a base portion of a master model having a tooth portion is kept covered with the cover when molded. The cover has on its bottom surface a magnet plate. By magnetic attraction between the magnet plates of the cover and one of the retainer, the master model can be mounted on the articulator. On the other hand, a tooth portion of an antagonist model is fixed to a base member.

Abstract: An apparatus and method for cleaning a dental articulator of the type including a body member having a plurality of precisely spaced holes extending therethrough. The apparatus including a base; and a plurality of precisely spaced pins extending from the base for insertion into the plurality of precisely spaced holes in the body member of the dental articulator to clean any debris from the plurality of precisely spaced holes in the body member of the dental articulator. The pins of the apparatus have the same precise spacing as the precisely spaced holes extending through the body member of the articulator and being sized to be inserted into and through the precisely spaced holes extending through the body member of the articulator. The method includes the step of forcing the pins of the apparatus through the precisely spaced holes extending through the body member of the articulator.

Abstract: This is the apparatus that designs the denture and enable to process complehensively both of the clasp designing and the base designing, and designs the denture which can be inserted smoothly and has the suitable resistant force against taking-off and the bracing force after insertion.

Abstract: A device for efficiently, accurately and consistently securing dental casts while an articulator is attached thereto includes a spine connecting a first stabilizing pad at one end to a second stabilizing pad at an opposite end. The device includes a breakaway feature which allows a connection between the casts to be broken with manual force. The first stabilizing pad and the second stabilizing pad are secured to maxillary and mandibular casts with an adhesive or the like, or by other methods such as magnets, to create a rigid connection between the accurately related maxillary and mandibular casts. The breakaway feature allows a technician to easily break the connection between the maxillary and mandibular casts with manual force after the articulator has been attached to the casts.

Abstract: A device for the production of a dental working model for preparation of a prosthetic work comprises a body member having a blind arcuated cavity bounded by facing inner and outer cavity walls, for receiving semi-liquid model material. The blind end of the arcuate cavity is closed by a sacrificial membrane which is integral with the body member. The membrane is of sufficient thickness to contain the semi-liquid model material within the arcuate cavity and of sufficient thinness to be easily removed, for example, by grinding.

Abstract: A flexible mold for forming the base of a dental model includes a cylindrical element which defines a mating element of a pivot mechanism that provides angular adjustment and subsequent fixation of a corresponding connection element of a dental model articulator.

Abstract: A method of producing dentures is provided. A moldable denture plate is introduced into the mouth of a patient. Deformation of the denture plate is carried out in a patient-specific manner. While the denture plate is still in the patient's mouth, it is subjected to at least a preliminary hardening. After being removed from the patient's mouth, the denture plate is provided with prefabricated teeth.

Abstract: A system and articulator for use with a replication of a dental patient's teeth taken by a conventional dental impression in the creation of a dental model of the patient's mouth. A first tray and a second tray are provided, each tray including a base surface having at least one frangible portion formed therewith, first and second spaced apart and upwardly extending side walls and first and second end walls which define a recessed cavity therebetween. The side walls are each defined by pluralities of spaced apart and vertically extending raised portions which permit segmented portions of the upper and lower dental models to be releasably attachable in correct position. A template base is provided with a configuration suitable for supporting an underside of each of said trays in an upright fashion and includes at least one raised portion corresponding in location and placement with the at least one frangible portion.

Abstract: An occluded state and an opened state are reproduced on an occluding apparatus by a pair of upper and lower dentiform models using a bite at the time of occlusion and a bite at the time of opening which are extracted from a patient. For the reproduction, a D plate (Dual Mounting Plate) 9 is used. When the D plate 9 is used, it is possible to produce a C block which is integrated with an upper jaw teeth mode 4 by gypsum and an S1 block (or an S2 block) for a spacer which is mounted between the C block and an upper mounting plate 11 (12). The occluded state and the opened state can be reproduced using the dentiform models by replacing the S1 block and the S2 block with each other.

Abstract: A dental model articulator includes two hinge-jointed arms, each arm having segments connected at 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 accommodated 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 casting element formed of a pliable material and shaped so as to be applied directly to an articulator support component. A casting element set is provided, particularly when the articulator has different configured upper and lower support components to which the casting elements are releasably set in position. The casting elements preferably include a pliable main body such as one of rubber or other conforming material such as silicone and are shaped to conform with the particular articulators' support configuration. This arrangement allows for casting of models for dental prosthesis directly on the articulator.

Abstract: A dental articulator structure for use in registration of a pair of casts of a dental model which are positioned in an opposing and spaced relationship. The articulator structure includes at least one axially rigid support member having opposing ends from which multi-piece cast attachment members may be orthogonally attached. The at least one axially rigid support member and the orthogonally attachable cast attachment members being an articulator structure that locates the axially rigid support member substantially close to the back molar face of the opposing pair of dental model casts such that confronting translational movement of the dental model casts is prevented in a plane parallel to the axially rigid support member, especially confronting translational movement in a region where back molars may be missing in a dental model.

Abstract: An improved tray system and articulator for use with a replication of a dental patient's teeth taken by a conventional dental impression in the creation of a dental model of the patient's mouth. A first tray and a second tray are provided, each tray including a base surface, first and second spaced apart and upwardly extending side walls and first and second end walls. The side walls are each defined by pluralities of spaced apart and vertically extending raised portions which permit segmented portions of the upper and lower dental models to be releasably attachable in correct position. The articulator includes a first mounting portion extending from the first tray and a second identically shaped mounting portion extending from the second tray. A first insert portion engages the first mounting portion and a second insert portion engages the second mounting portion.

Abstract: A dental articulator structure for use in registration of a pair of casts of a dental model which are positioned in an opposing and spaced relationship. The articulator structure includes at least one axially rigid support member having opposing ends from which multi-piece cast attachment members may be orthogonally attached. The at least one axially rigid support member and the orthogonally attachable cast attachment members being an articulator structure that locates the axially rigid support member substantially close to the back molar face of the opposing pair of dental model casts such that confronting translational movement of the dental model casts is prevented in a plane parallel to the axially rigid support member, especially confronting translational movement in a region where back molars may be missing in a dental model.

Abstract: A system for casting a dental model has first and second, hollow molds that are mounted on first and second mounting members. The mounting members have distal ends that extend into respective molds and proximal ends extending away from the molds. The molds are retained on and firmly held by the mounting members so that the molds can not rotate relative to the mounting members. Dental casting material can be poured into the molds and around the distal ends of the mounting members to form base stones in the molds. The mounting members are attached to connector members that extend from proximal ends of the mounting members.

Abstract: A caddy is provided for either permanent or removable attachment to a dental articulator for retaining one or more bite registrations at or near the dental articulator.

Abstract: A dental articulator structure for use in registration of a pair of casts of a dental model which are positioned in an opposing and spaced relationship. The articulator structure includes at least one axially rigid support member having opposing ends from which multi-piece cast attachment members may be orthogonally attached. The at least one axially rigid support member and the orthogonally attachable cast attachment members being an articulator structure that locates the axially rigid support member substantially close to the back molar face of the opposing pair of dental model casts such that confronting translational movement of the dental model casts is prevented in a plane parallel to the axially rigid support member, especially confronting translational movement in a region where back molars may be missing in a dental model.

Abstract: The present invention relates generally to an accessory device for a dental articulator and method for using the device in the construction of dental prosthetics. More particularly, the present invention relates to a vertically adjustable occlusal plane table and mounting platform that may be used with a variety of articulators in the mounting of casts, the selection of an occlusal plane, the positioning and setting of upper and lower artificial teeth, and other procedures in the fabrication of removable and fixed dental restorations.

Abstract: A premanufactured dental model base, and method, for supporting a cast dental model where the dental model base has preformed apertures adaptable for securing the dental model to the dental model base and for disengagably retaining the dental model segment of a damaged tooth. The dental model base has a dental model base body which is adaptable for supporting the dental model. The dental model base body may be connected to an articulator attachment bar which is adaptable for engaging a disposable articulator. The dental model base body may alternatively be connected to an articulator attachment plate which is adaptable for connecting the dental model base to a metal articulator. In one embodiment, the articulator attachment plate is detachably engaged to the dental model base body and the articulator attachment bar slidingly engages the dental model base body. Thus, the dental model base may be used with either a metal articulator or a disposable articulator.

Abstract: A premanufactured dental model base is disclosed for supporting a cast dental model. The dental model base has preformed integral pins adaptable for securing the dental model to the dental model base and for disengageably retaining a dental model segment representing a damaged tooth.

Abstract: A mounting plate assembly is provided for use with a dental articulator. The mounting plate assembly includes a mounting plate structure having a plurality of raised portions on a first side thereof. The mounting plate structure has a pin member extending perpendicular from a second side thereof. A base plate structure includes a portion having a slot adapted to receive and end portion of the pin member. The slot is positionable with respect to the pin member from an unlocked position to a locked position upon movement of the portion of the base plate structure to secure the base plate structure and mounting plate structure in fixed position with one another.

Abstract: The adjustable mounting device comprises two superposed plates in sliding relationship. One of the plates is pivotally connected to the articulator. A first mechanism is provided to selectively slide and lock in position one of the plates relative to the other while this other plate is provided with a second mechanism to selectively rotate and lock the device in position with reference to the dental articulator. This mounting device replaces one or both conventional fixed mounting plates in a dental articulator to provide adjustability between the lower and upper parts of the dental cast.

Abstract: The invention relates to an exchangeable magnet fixture with correspondingly shaped mounting plate for releasably securing plaster models on the lower frame part and on the upper frame part of a dental articulator, the plaster models in each case being plaster-cast on a mounting plate which has a metal plate with which the mounting plate is held securely on the magnet fixture. The magnet fixture is designed so that it can be used in exchange for the conventional screw connection between the upper frame part or lower frame part and the screw-on mounting plate in the hitherto customary dental articulators.

Abstract: A dental articulator has a generally flat fixed base and a pivoted top with trays mounted on both the base and top. The trays have upstanding side wall elements, each tray being dimensioned and spaced for reception of a hard mold member having a generally flat top surface mounting a positive cast or dental model of one of a patient's arches. The peripheral edge portions of the hard mold members are dimensioned to be press fitted into the trays to abut juxtaposed ones of side wall elements of the tray. The trays are each slidable in Y or X-y axes with respect to substages connected to the articulator top and articulator base, respectively. Each tray has a straight rear wall, with the remainder of a continuous wall being in straight or curved interior segments. In one embodiment, a series of posts define the internal periphery of the trays.

Abstract: Dental articulator apparatus includes an articulator base, a post extending upwardly from the articulator base, and an upper articulator member movably mounted on the post. The apparatus incorporates upper and lower dental cast or mold supports which allow the molds to be snapped in place on the apparatus or readily removed therefrom. The apparatus also includes an incisal guide member support connected to the base and extending outwardly therefrom between the upper articulator member and the articulator base. The incisal guide member support has a number of incisal guide member support sides alternatively presented for engagement by an incisal guide member depending from the upper articulator member.

Abstract: A notch and inlet forming dental accessory includes a cylindrical base portion having a first surface and a second surface. The first surface has a circular recess formed therein thereby forming a peripheral wall. The second surface has a circular recess formed therein thereby forming a peripheral wall. A plurality of pegs each have lower ends secured within the circular recess of the first surface of the base portion. A pair of notch projections are secured within the circular recess of the second surface of the base portion.

Abstract: A method of determining the position of an upper jaw cast and a lower jaw cast using a dental articulator provides a disposable plastic holder in the lower jaw cast and mounts it in a metal bracket bar fitted to the base of the articulator whose telescoping post allows adjustment of the height of the head above the base. A bracket bar mounted on the head and spring biased so that this bracket bar can move in a plane and can pivot about a horizontal axis receives another plastic disposable holder which can fit into a cavity in the upper casting. Once the castings are properly positioned, a hardenable composition can be cast into the recess to embed the holder in the upper casting.

Abstract: A dental articulator (10) having a first arch (12) for receiving a dental cast of teeth having a first grid pattern (30) that includes a first plurality of dowel pin holes (60) that define multiple dowel pin locations for receiving a first plurality of dowel pins (34), and a first plurality of support pin holes (62) that define multiple support pin locations for receiving a first plurality of support pins (64) where in the dowel pin locations and the support pin locations are spaced apart such that a die may be held in place within the first arch by one or more of the first plurality of dowel pins and by one or more of the first plurality of support pins to prevent movement or rotation of the die.

Abstract: A dental model and articulator system comprises upper and lower dental casts that each receive a corresponding anchor in their respective vertical posterior faces. A generally rectangular articulator main body has a transverse horizontal hinge attachment on its top that connects to an upper arm and the anchor on the upper dental cast. A vertical pivot is provided in the bottom end of the articulator main body that connects to the anchor on the lower dental cast. The upper and lower anchors attach to their respective articulator parts with a stem-in-sleeve arrangement that allows independent lateral tilting of both the upper and lower dental casts for occlusal and masticatory registration and fixing with glue. The vertical pivot also attaches to the articulator main body with a stem-in-sleeve arrangement that allows further degrees of freedom for the occlusal and masticatory registration between the upper and lower dental casts and for fixing the registration with glue.

Abstract: Disclosed are a method and apparatus for relating a model of a maxillary arch of a patient to a simulated axis of rotation of the condyle of the lower jaw of the patient. In carrying out the invention in one form, a pointer is positioned on a predetermined landmark of the upper jaw of a patient. A lateral image of the condyle and the pointer are obtained while the patient's two hamular notches and incisive papilla define a plane which, preferably, is substantially horizontal. From the image, vertical and front-to-back distances of the axis of rotation of the condyle relative to the landmark are then determined. A model of a maxillary arch of a patient is positioned such that the predetermined landmark is located with substantially the same vertical and front-to-back distances from a simulated axis of rotation of the patient's lower jaw. Finally, a model of the patient's lower jaw that rotates about the simulated axis is positioned to abut the model of the maxillary arch.

Abstract: An improved tray system and articulator for use with a replication of a dental patient's teeth taken by a conventional dental impression in the creation of a dental model of the patient's mouth. A first tray and a second tray are provided, each tray having a substantially planar surface upon which a substrate layer of a stone material is applied. An insert is detachably secured to each of the trays and includes an upper keyed portion about which the stone layer bonds. An upper conventional dental impression is secured to the substrate stone layer of the first dental tray and a lower dental impression is secured to the substrate layer of the second dental tray. A reusable articulator includes first and second hinged members which secure to the first and second trays and mount the trays so as to position the teeth replications.

Abstract: A pin stabilizer fir dental models (14) has a plurality of positioning pins (1) extended from an articulator base plate (2) for insertion into positioning sleeves (3) that are cast in a dental model while the positioning pins are in the positioning sleeves. Quickly and easily then, the dental model can be attached repeatedly to and detached repeatedly from a dental articulator (15) to which the articulator base plate is affixed for work on a dental model. The positioning pins and the positioning sleeves can be made of materials which do not deform from repeated use. A plurality of dental models can be constructed to fit onto an articulator base plate that is attachable to a bottom and/or top articulator jaw (16) of known types and sizes of dental articulators.

Abstract: A dental articulator comprises-a maxillary clamp, a clamp support, a mandibular clamp and a mandibular clamp detent. The clamp support includes a first post defining a first set of engagement sites, a second post defining a second set of engagement sites, and a hinge pivotally supposing the maxillary clamp. The mandibular clamp detent engages with corresponding engagement sites of the first and second sets of engagement sites to position the mandibular clamp relative to the maxillary clamp. In preferred form, the mandibular and maxillary clamps each include a collet for embracing a first dental model and a cam threadedly engaging the collet for tightening the collet around such a dental model. In an especially preferred form, the collet includes a flexible band defining periodic apertures along a length of the band and the cam defines a thread engaging a potion of the periodic apertures to loosen or tighten the collet.

Abstract: Mandibular distraction osteogenesis can take place by performing corticotomy surgery at two points on opposite sides of the mandible and at the same time attaching an expansible distraction device to the teeth of the mandible on opposite sides of the two points of the corticotomy surgery. The device is then periodically expanded until a desired mandibular length is obtained. The device includes a plurality of bands that are fitted onto the teeth of the mandible and a number of universal expansion screws that are connected to the bands for purposes of distracting the mandible. This device can be assembled with an appropriate appliance assembly tool that precisely positions and aligns the universal expansion screws relative to the bands during assembly thereof.

Abstract: A dental articulator which is basic in construction and practical for use by dentists as a routine procedure in their general practices. The articulator includes a base platform for stabilizing the articulator in first and second positions on a work surface, a longitudinal support column attached to the base platform, upper and lower support arms connected to the support column, and may include quick-release couplings providing a firm, adjustable and quickly removable mount for stone teeth casts. The lower support arm pivots and the upper does not, to more accurately simulate human jaw movement.

Abstract: A method of determining the position of an upper jaw cast and a lower jaw cast using a dental articulator provides a disposable plastic holder in the lower jaw cast and mounts it in a metal bracket bar fitted to the base of the articulator whose telescoping post allows adjustment of the height of the head above the base. A bracket bar mounted on the head and spring biased so that this bracket bar can move in a plane and can pivot about a horizontal axis receives another plastic disposable holder which can fit into a cavity in the upper casting. Once the castings are properly positioned, a hardenable composition can be cast into the recess to embed the holder in the upper casting.

Abstract: A dental cast tray subassembly for forming a dental cast model and for mounting to a dental articulator. The tray subassembly forms a channel shaped in a configuration of a human jaw to receive a mold material for forming a dental cast model. The channel further includes ribs for registering the model relative to the channel and a release mechanism for releasing the model from the channel. Further included is a platform for interconnecting with connectors for connecting the subassembly to an articulator.

Abstract: The specification discloses an articulator and associated method for assembling upper and lower dental models corresponding to the upper and lower sets of a patient's teeth in a desired occlusal relationship for simulation of occlusal and masticatory movements by application of a force to the dental models supported by the articulator. The articulator comprises a frame comprising resiliently deformable first and second frame sections pivotally connected together for pivotal movement about a pivot axis. Each of the frame sections includes an elongate channel, the channels being arranged such that pivotal movement of the frame sections about the pivot axis sweeps the length axes of the channels through arcs in a plane disposed substantially perpendicular to the pivot axis. Structure is provided for limiting pivotal movement of the frame sections beyond a closed position at which the length axes of the channels are disposed substantially coaxially.

Abstract: A dental articulation apparatus for creating a pinned model of a patient's mandibular and maxillary dental arches. The apparatus permits the simultaneous relation and construction of pinned, segmental models of the maxillary and mandibular dental arches and allows the model, die, and articulation to be accomplished in a single pouring. The articulator includes recessed maxillary and mandibular tray support members each containing a plurality of indexing holes into which indexing pins can be inserted. A negative dental impression is then filled with a casting material, or alternatively, the support members are filled with a casting material, and the support members and negative impression material are then joined together such that the indexing pins protrude through and into the casting material.

Abstract: A dental articulator has both a base and head enabling gnatho-condylar movements and locking by threaded screws. The movable members receive disposable rubber holders which can allow direct contact with plaster of the casts, anchoring of the casts by screws through stoppers on the holders or by embedding the holders which are disposable and rubber in the cast. The column has a post which can be locked at adjustable heights relative to the base.

Abstract: Articulator for dental modelling, such as restoration of individual teeth and the manufacture of bridges or the like, comprising an upper part and a lower part mutually connected by a hinge, which makes it possible to simulate a movement approximately corresponding to a chewing movement, between the upper part and the lower part as well as a device for adjusting the upper part in relation to the lower part to establish a correct mutual engagement between the models mounted on the two parts and a subsequent fixation thereof. The articulator, of which the adjustment can take place shortly after the models have hardened and are ready for further working up, has an upper and lower part, each comprising a mould having walls with a toothing, one of the parts comprising a stanchion made of thermoplastics, the stanchion carrying one part of the hinge, with the hinge being separable. An apparatus having a nozzle is also provided, for supplying a jet of hot air through the stanchion, which is preferably tube shaped.

Abstract: Disclosed is a system for removably supporting dental models on the upper and lower frame members of an articulator, the system including a base plate having one side adapted to support a die-stone dental replica, and an opposite side provided with shaped registration and socket structure, the system further including an adapter plate having one side adapted to be adhesively bonded to the upper or lower articulator frame-member, and the other side of each adapter plate structured for being snapped into engagement with the opposite side of the base plate to releasably hold it on the adapter plate.

Abstract: The present invention comprises an articulator for registering an upper dental cast to a lower dental cast. The articulator includes an upper member subassembly with left and right sides and a lower member subassembly with left and right sides each composed of plastic material. The articulator further has at least one hinge member engaging one of the members allowing one of said members to pivot relative to the other member and a coupling means flexibly connecting the upper member subassembly to the lower member subassembly. The articulator further includes disconnectable connection means joined to one of the members for disengaging the upper member subassembly and the lower member subassembly whereby the upper and the lower member subassemblies may be separated, and a clipping means for removably securing the upper member subassembly to the upper dental cast and the lower member subassembly to the lower dental cast such that said upper and lower dental casts can be properly and flexibly aligned.

Abstract: A method and apparatus for performing a head-related model incorporating for transferring a jaw model between articulators of different types. The apparatus for the head-related incorporation of jaw models includes an articulator base plate, a ground plate connected to the articulator base plate and a cylinder having a cylindrical cavity connected vertically to an upper surface of the ground plate. A piston is inserted in the cylindrical cavity. A carrier plate is connected to the end of the piston opposite the articulator base plate. A split cast plate is positioned on the carrier plate and exactly repositionable via magnetic connection between the split cast plate and the carrier plate. A fixation element is connected to the carrier plate. An articulator mounting plate is supported by and connected to the split cast plate via a hardened viscous medium.

Abstract: Method for fixation of different positions of a model (2) of the mandible relatively to a model (1) of the maxilla of a patient. One of the models consists of two members (15, 16) namely a tooth member and a socket member unified along coinsiding joint surfaces forming a common boarder plane (19) in a predetermined mutual position. The method comprises impressions of the teeth of the mandible and maxilla respectively are made in an index (54) in the shape of a plastically deformable plate, partly in a thick plate and partly in a thin plate. The mandible and maxilla models (2) are positioned in an articulator (5) so that they coinside with the thick index. The thick index is replaced with the thin index, forming an interspace between the joint surfaces of the divided model. The interspace is cast by filling the space with a cast mass, obtaining a removable interlayer plate.

Abstract: Device for making plaster models, total or partial dental arch replicas, used for dental reconstitutions and mounted on an occlusion device or articulator, comprising two articulated parts, respectively a higher part (1) and a lower part (2), and each having a reception cup (3). Each cup (3) receives a removable cupel of which the peripheral external wall (8) assumes the shape of the internal wall of the cup (3), said cupel (6) being set in the cup (3) when making the model; each cup (3) is comprised of removable fixing means (5, 11, 12) for fixing the cupel (6).

Abstract: An articulator comprising two U-shaped wire frames joined by hinges and springs. The frames are snapped onto plastic clips cemented to dental casts. The clips allow the casts to be removed and reintroduced in repeatable positions. A slip-joint provides for left and right height adjustment between the dental casts to be adjusted or separated completely.

Abstract: An articulator, for use in making dentures or parts thereof. It has an upper principal member and a lower principal member. An upper support is provided for holding a maxillary cast fixedly mounted on the side of the upper member facing the lower principal member. A lower support holds a mandibular cast. This support is mounted on the lower principal member and faces the upper principal member. The lower support has a releasing/locking arrangement making it possible for an operator to move the lower support freely in several directions when the arrangement is in its released mode and to lock it in a desired position requiring only a slight holding in place of the casts in relation to each other by the operator during a locking procedure.