Abstract: The facebow with double bite forks uses two bite forks. The bite forks are connected to one common handle of the bite fork secured to the facebow frame. The assembly for the two bite forks helps to maintain a predetermined vertical distance of 1.5 centimeters between them. An infraorbital pointer is also attached to the facebow frame. It is secured in place to act as the anterior reference point. The adjustable earpieces inserted into the patient's external auditory meatuses are adjusted to be considered as posterior reference points. This assembly helps to record the facebow and centric relation positions simultaneously.

Abstract: This invention relates to improved methods and apparatus for recording and simulating the condylar movement of an individual. This invention also provides a dental articulator which is designed to simulate the jaw or condylar movements of a patient. This instrument enables a dentist to obtain the necessary diagnostic information for treatment of the occlusal irregularities, such as malocclusion, and the fabrication of dental cast or “dentures”.

Abstract: A method for deriving shape information of a person's skull and dentition, including the steps of: taking an impression of the person's dentition, taking a first scan of the person's head, while the person is wearing the impression, taking a second scan of the impression alone, combining the scans, deriving the shape information from the combined scans. Advantageously the method further includes the step of taking a third scan of the person's head alone without the impression.

Abstract: The systems and methods disclosed herein employ a combination of digital three-dimensional modeling and rapid fabrication technologies to provide pre-indexed, pre-registered, and/or precut components for articulated dental models. Dental articulators and components of dental models as described herein use a positioning key to encode positional information for components of the dental model, and/or a reference grid on mounting surfaces to enforce local accuracy of fabricated parts against a fixed reference array.

Abstract: A mechanical interfitting connector for repeatably connecting dental models of teeth to articulators without damaging the former. The connector may include a socket mountable to a model and a male member mountable to the articulator, wherein the male member enters and engages the socket. The socket may be adhered to the model or alternatively partially embedded therein. A screw may be passed through the socket and male member so as to leave a small marking on the dental model, thereby indexing the socket and model for subsequent mountings, and also to prevent disengagement of the male member from the socket. A supplementary plate may be provided to secure anchoring of the male member to the socket, and to shield plaster which has not fully hardened against damage during hardening.

Abstract: The systems and methods disclosed herein employ a combination of digital three-dimensional modeling and rapid fabrication technologies to provide pre-indexed, pre-registered, and/or precut components for articulated dental models. Dental articulators and components of dental models as described herein use a positioning key to encode positional information for components of the dental model, and/or a reference grid on mounting surfaces to enforce local accuracy of fabricated parts against a fixed reference array.

Abstract: An occlusal plane analyzer (5) is composed of an analysis board (7) made of a magnetic material and held above a lower jaw model (2), a magnet (8) which can attract the analysis board (7) with magnetic force and which has a circular support hole (15) going through in an attraction direction of the magnetic force, and a Monson curve imparting tool (9) composed of a spherical body section (17) which is made of a magnetic material with a diameter larger than an inside diameter of the support hole (15) and which can be attracted to the support hole (15), an extended section (18) extending from the spherical body section (17), and a spherical surface regenerating section (19) further extending from a distal end of the extended section (18) for drawing a circular arc concentric with the spherical body section (17).

Abstract: A positioning apparatus and method for using the positioning apparatus to position a dental arch model in a dental articulator, simulating the position of dental arch in a skull. The positioning apparatus includes a first member, a second member that slides with respect to the first member, and a third member that slides with respect to the second member. A locating member on the second member and one or more adjustment members on the third member impart an orientation to a mounting surface representative of a plane in which a dental arch lies. A maxillary tray having radio-opaque members may be mounted to the mounting surface. X-ray data obtained while the maxillary tray is engaged with a patient's teeth is used to determine the position and orientation of a dental arch model while said model is engaged with the maxillary tray on the mounting surface.

Abstract: The invention relates to a method for simulating an orthognathic operation, wherein, to simulate the displacement of the upper dental arch 105 of the patient caused by the surgical intervention to be applied to the maxilla 106 during said orthognathic surgery, the angular and translational position of an upper mounting plate 526 of a 3-D orthognathic surgery simulator 510 carrying a model 317 of said upper dental arch 105 is readjusted by rotating said upper mounting plate 526 around at least two, preferably three of three orthogonal axes X1Y and Z with respect to a rotation point 522 fixed to an arm 521 of said 3-D orthognathic surgery simulator 510, and translating said arm 521 substantially parallel to at least one of the same three orthogonal axes X, Y, Z.

Abstract: The systems and methods disclosed herein employ a combination of digital three-dimensional modeling and rapid fabrication technologies to provide pre-indexed, pre-registered, and/or precut components for articulated dental models. Dental articulators and components of dental models as described herein use a positioning key to encode positional information for components of the dental model, and/or a reference grid on mounting surfaces to enforce local accuracy of fabricated parts against a fixed reference array.

Abstract: The invention relates to a method and a registering system for the transfer of a jaw model in relation to a hinge axis, for example, in an articulator, and to a connection device for connecting a lower jaw adapter (1) to a measuring carrier (4), and a bite carrier (3) for producing a bite key. The invention is characterised in that the transfer of the mandibular joint geometry, especially the exact position of the hinge axis of the patient, can be carried out in a state of assembly or an articulator using only a hinge axis determination relative to the lower jaw of the patient. The transfer of the facial arc required until now in prior art is rendered superfluous by the invention. Moreover, the possibilities of use of the transfer in relation to the hinge axis are extended, modularised and simultaneously simplified and accelerated. Sources of error are eliminated, and the expenditure on equipment and costs of the transfer of the model can be critically reduced.

Abstract: An occlusal plane analyzer 5 is composed of an analysis board 7 made of a magnetic material and held above a lower jaw model 2, a magnet 8 which can attract the analysis board 7 with magnetic force and which has a circular support hole 15 going through in an attraction direction of the magnetic force, and a Monson curve imparting tool 9 composed of a spherical body section 17 which is made of a magnetic material with a diameter larger than an inside diameter of the support hole 15 and which can be attracted to the support hole 15, an extended section 18 extending from the spherical body section 17, and a spherical surface regenerating section 19 further extending from a distal end of the extended section 18 and drawing a circular arc concentric with the spherical body section 17.

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: The invention concerns an articulator for parametering a prosthetic or occlusal directional plane and dentoalveolar stages, for producing dental prostheses. The device includes two planar elements, upper and lower (1, 2), mutually articulated about a horizontal pin (3) parallel to the two planar elements (1, 2) and located above the lower planar element (2). The two planar elements are designed to fix, opposite each other and in contact with each other, a patient's two dental arch models (5, 6), namely an upper model (5) fixed beneath the upper element (1) lower surface and a lower model (6) fixed on the lower element (2) upper surface, and means for defining, between the two elements (1, 2) a plane inclined with respect to the upper element (1) and corresponding to an occlusal plane P between the two models (5, 6). The means defining the inclined plane corresponding to the occlusal plane P are borne by the upper element (1). They include a plate (7) representing the occlusal directional plane P.

Abstract: An articulator, specifically for applications in dentistry and dental technique, including a lower base (2) and an upper base (3) reciprocally attached at the joints (6, 7) placed at a variable height or distance from the base (3) of the articulator, in order to allow the occlusal plane of the dental arches to be positioned at the correct level on the condylar axis.

Abstract: The disclosed waxing guide is in the form of a thin flat element having a central line formed thereon. The guide is placed beneath the dental cast with the central line centered between maxillary central incisors on the dental cast. Lines spaced outwardly from the central line indicate the apparent width of the central incisor, the adjacent lateral incisor, and the adjacent canine tooth and first bicuspid, when viewed from the front. Each of the spaces has the same ratio of 1:1.618 with the adjacent spaces.

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 system for simulating an orthognatic surgery action, including an X-ray scanner, a device of three-dimensional localization of relative positions of dental castings, each associated with a unit locatable in position and orientation by the localization device, and an image processing system for combining tomographic images provided by the scanner with positioning data provided by the localization device to obtain three-dimensional images.

Abstract: An oral surgery simulating device for planning an oral surgery for a patient including a stand having a base, a device for receiving a cast of a mandible of the patient movably connected to the base, a device for receiving a cast of a maxilla of the patient connected to the stand and positioned atop the cast of the mandible and a pointing unit releasably connected to the stand for aligning the cast of the mandible and the cast of the maxilla with relation to Frankfort's horizontal plane to thereby provide a replica of an upper and lower jaw of the patient. The device for receiving the cast of the maxilla is adjustable in a lateral direction and rotatable. The pointer unit includes a pole, a C-shaped clamp connected to and slideable along a length of the pole and first, second and third pointers extending from the C-shaped clamp for measuring the upper and lower jaw of the patient in relation to Frankfort's horizontal plane.

Abstract: A working model for a lower jaw is disposed on the bottom of an articulator, a pair of support rods are disposed on both sides of the articulator so as to extend upward from the bottom of the articulator, a pair of joint portions are provided on top of the paired supprt rods to support both end portions of a shaft, a working model for an upper jaw is mounted to that shaft to permit movement of the upper working model relative to the lower working model, a pair of side pins are disposed at upper, right and left, outside positions of artificial teeth mounted into the articulator, and a tooth aligning device is mounted to the side pins. Further, a center pin is mounted along the midline of the articulator, and holding portions for mouting the tooth aligning device are formed on the support rods and the center pin.

Abstract: The instant invention provides a novel apparatus; a novel method of using the apparatus; and a novel prosthesis made by the method of using the apparatus.

Abstract: The instant invention provides a method and an apparatus for forming a palatal plate prosthesis of a substantially precise, predetermined uniform thickness.

Abstract: The instant invention provides a novel apparatus; a novel method of using the apparatus; and a novel prosthesis made by the method of using the apparatus.

Abstract: A working model for a lower jaw is disposed on the bottom of an articulator, a pair of support rods are disposed on both sides of the articulator so as to extend upward from the bottom of the articulator, a pair of joint portions are provided on top of the paired support rods to support both end portions of a shaft, a working model for an upper jaw is mounted to that shaft to permit movement of the upper working model relative to the lower working model, a pair of side pins are disposed at upper, right and left, outside positions of artificial teeth mounted into the articulator, and a tooth aligning device is mounted to the side pins. Further, a center pin is mounted along the midline of the articulator, and holding portions for mounting the tooth aligning device are formed on the support rods and the center pin.

Abstract: The present invention is concerned with apparatus and methods in the field of dentistry and in the field of design and testing of dental fixtures, components and materials. The apparatus comprises a jaw model having a mandible and a maxilla; a loading mechanism, coupled to the jaw model, for imposing an occlusal force on the mandible and maxilla; a mechanism(s), coupled to the mandible of the jaw model, for moving the mandible relative to the maxilla; and a load or force sensing device for sensing occlusal forces on the mandible and the maxilla of the jaw model. The mandible is caused to move laterally and protrusively using electric motors. A strain gauge meter may be coupled to the load sensing device, for measuring and displaying the forces sensed by the sensing device. A digital processor may also be employed for storing and recording the forces measured by the meter.

Abstract: The present invention generally relates to an apparatus and method for positioning a maxillary dental arch model in a dental articulator to simulate the positioning of a maxillary dental arch represented by the arch model. The arch model may be positioned on a plate having a substantially planar surface with a fulcrum point through which three generally mutually perpendicular axes are aligned. In addition, the plate may be movably mounted to an articulator and adjusted with respect to these axes based upon three linear and three angular measurements related to the positioning of a patient's maxillary dental arch in the patient's skull.

Abstract: An articurator is comprised of a mandibular frame being provided with condyles, a maxillary frame mounted on the mandibular frame via condylar guide mechanisms, an anterior guide table provided on the front end of the mandibular frame, and an anterior guide pin provided on the front end of the maxillary frame. The anterior guide table comprises a table portion and lateral wings. The table portion has a sagittal inclination angle adjusting mechanism, and the lateral wings has lateral wing angles adjusting mechanisms. The anterior guide pin makes contact with and slides on an anterior guide mechanism formed by the surface of the anterior guide table. The condylar guide mechanisms in which the condyle is positioned have condylar path inclination angle adjusting mechanisms. The sagittal inclination angle, the lateral wing angles, and the condylar path inclination angles are to be adjusted by two steps to specified values of a first group and to specified values of a second group.

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: 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: A technique for creating "universally" calibrated dental articulators includes using a replica which simulates upper and lower dental models of a patient to properly align mounting plates to an articulator. The mounting plates are releasably attached to the replica before upper and lower frame members of the articulator are closed about the replica and fixed to the mounting plates. The replica is then detached from the mounting plates and used to form additional articulators identically calibrated with mounting plates. Base plates releasably attachable to the mounting plates are then used to form and mount the dental models. A first base plate is fixed to a first dental model and is then releasably attached to a mounting plate on the articulator. A second base plate is then releasably attached to the opposing mounting plate on the articulator.

Abstract: There is disclosed a calibration device for the inspection and precise setting of dental articulators which includes a stage member that is removably secured to the articulator lower frame and an scope gauge member that is removably secured to the upper frame of the articulator. A pair of position sensing indicators having sensing probes which are carried at the opposite sides of the stage member and are mechanically coupled by levers to contact points on the scope member which are located on the right and left axes of rotation of the articulator members. This permits the indicators to read, directly, relative vertical movements of the opposite sides of the articulator without being influenced by adjustments made at the opposite sides of the articulator. The inspection device includes ocular magnifiers including reticle and target indicium which cooperate to provide a vernier scale registering relative X-Y positions of the stage and gauge inspection members.

Abstract: A lower jaw moving function readjusting apparatus, which includes: an upper and lower triangular shaped plate; a front receiving tray and two rear receiving trays fixedly mounted on the triangular shaped lower plate, a front scribing needle and two rear scribing needles, each of which has a lower end which is positioned in hardenable material located in each of the front and rear receiving trays. The needles are suspended from the upper support plate and the height of at least one of the needles is adjustable. The upper and lower springs are hinged together so as to be pivotably opened or closed and the upper springs and lower springs are secured, respectively, to the upper and lower support plates.

Abstract: An appliance for the three-dimensional adjustment of the maxillary cast is mounted by means of a screw on an articulated part. The appliance includes a first measuring element whose tip cooperates with a first reference point on a central incisor of the maxillary cast. The appliance includes also a second and a third measuring element whose tips correspond each with a further reference point on a first molar of the maxillary cast. Each of these measuring elements can be adjusted separately and three-dimensionally to the desired position by the special design of the appliance.

Abstract: A jaw model articulator clearly identifies condyle joint strain as well as fully emulates a patient's straight bite and cross bite. The spatial relationship of the upper and lower jaws with respect to the condyle joints and to each other is accurately determined by just two wax bite impressions taken of the patient. No extraneous mechanical hardware needs to be attached to the patient's head. The two wax impressions are sequentially inserted between the upper and lower jaw models. The resulting change in the models relative positions are measured and the values inputted to a desk top personal computer. The computer calculates the precise location of the rotational axis defined by the condyle joints, and the articulator is set up accordingly.

Abstract: An articulator for use in constructing artificial teeth is provided with means (10) for use in measuring the condylar movements of the artificial temporomandibular joints in the articulator, the measuring means (10) comprising boss means (11) adapted to be secured coaxially at the end of the shaft member (24) forming the pivot for a movable base plate (22) with respect to a fixed baseplate (21), axial scale bearing means (12) adapted to extend over the adjacent support (26) and generally parallel to the axis of the shaft member (24), point means (13) extending generally parallel to the axial scale bearing means (12), and slide means (14) for the pointer means (13) to enable its point (16) to be brought into contact with a scale (51) affixed to a face area of the support (26).

Abstract: A characteristic of optimal facial harmony is a correlation of the A/P (Anterior/Posterior) position of the maxillary incisors with the forehead. When the forehead is canted about 7 degrees or less, the A/P position of the maxillary incisors should match that of the middle of the forehead. For every degree the forehead is canted more than 7 degrees, the A/P position of the maxillary incisors should be 0.6 millimeters more anterior than the middle of the forehead. The extent to which the A/P position of the maxillary incisors is forward or back of the forehead's midpoint can be judged in millimeters quite accurately by viewing a patient in profile with the patient's forehead and maxillary incisors fully bared. Once the linear decision is made then the A/P treatment goal position can be physically measured and recorded using a novel bite fork (58), an improved facebow (56), and a new piece of equipment called a verticalizer (60).

Abstract: A model of a maxilla is marked with the location of the patient's lip line and with the location of the patient's ear-nose plane. Then the incisor portion of the model is shaped to have a lower edge lying on the location of the lip line. A calibration plate having a posterior ridge engaging the tuberosity portion of the model, an anterior part engaging the shaped incisor portion of the model, and sides formed with slots aligned with the molar portions of the model is then positioned on the model. The plate extends substantially parallel to the ear-nose plane from shaped front of the model. The slots are filled around the molar portions of the model with wax and a mold fork is fitted flat to the underside of the calibration plate underneath the slots with the compound adhering to the mold fork. Thereafter the fork and the compound are separated from the plate and model and are fitted to the patient.

Abstract: A bracket having a vertical column for supporting a face bow and a bite fork on the face of a patient with impressionable material on the bite fork in the mouth of the patient with the patient's teeth engaging the impressionable material making an impression thereon, and ear engaging members on the face bow engaging the ear openings of the patient, and a lip engaging indicator on the face bow engaging the lip of the patient. The face bow being removable from the bracket and the bracket with facebow removed being adapted to support the bite fork on an articulator, where dentures supported on the articulator can be articulated relative to the impressions on the impressionable material supported on the bite fork.

Abstract: A device for measuring pressure transmitted to the mandibular alveolar ridge as well as the amount of applied pressure necessary to shear off various types of food, in full upper and lower dentures. The device comprises a denture-receiving articulator to which a measured pressure is applied to upper dentures and the pressure then transmitted to the lower dentures to be measured.

Abstract: A dental articulator, having an interim used tripod, reproduces the relationships of the jaws and teeth of respective dental patients. Their upper or maxillary jaw and their lower or mandibular jaw dental casts are positionable in their neuromuscular resting position, or in their full teeth contacting centric occlusion position. Lower and upper trays, are formed like art portions of full display dental casts, and adjustably connected together in opposed disposition, by a U shaped rigid upright support. Dental plaster is used to position and to secure the lower dental cast in the lower tray, while also using, during this interim, a tripod especially preadjusted to the cant of the occlusal plane of a patient's teeth, as determined and recorded from an observance of a patient's lateral cephalometric head X-ray film.

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: In order to allow positive and quick fixation as well as centric fixation of a condyle portion with a very simplified operation, a semi-adjustable dental articulator is of the construction that an adjusting-and-fixing knob of the adjustable guide plate for the condylar box is provided to protrude beyond the upper surface of the condylar box, and also that an orbita indicator is detachably, semi-fixedly and slidably mounted on the incisal guide pin. On a corner edge line between a back surface and an outer side surface of each of a pair of laterally spaced upright frame portions of an articulator body is provided with an indicator notch aligned with an occlusion plane in height and another indicator notch aligned with an ear in height.

Abstract: A tooth setting aid arrangement for use for positionally correctly setting artificial teeth in a complete lower denture on a lower jaw model in accordance with a Pound's line includes a holder which is positionally fixable with respect to the lower jaw model and is arched along an imaginary skullcap-shaped surface with a sagittal and transversal compensation curve, and two insert members which are pivotable and shiftable on the holder within the imaginary skullcap surface as well as arrestable in selected positions thereof relative to the holder for adjustment to the Pound's line. The holder is constituted by a bridge member which includes two plate-shaped bridge elements which are juxtaposed with one another and spaced from each other by a distancing element so as to bound an insertion space. Each of the insert members includes a straight portion and two arm portions which extend at an angle from one side of the straight portion.

Abstract: A dental articulator is formed by mounting upper and lower frames of an articulator on a precisely formed alignment block. Condylar elements are captured by fixtures attached to the upper frame, while pedestals for the condylar elements have their lower ends extending into flowable bonding material positioned in sockets in the upper frame. The bonding material sets while the condylar elements are precisely held by the upper frame.

Abstract: An alignment cap for mounting artificial teeth on a working model, characterized thereby that it mainly consists of a proper arched cap made of a transparent material, e.g. a plastic, which at its back-side is hingedly fixed to an axis of rotation.

Abstract: An adjustable occlusal plane table for use with an articulator having a dental arch model mounted thereon includes a planar surface that is three dimensionally adjustable so as to be positioned along the plane of occlusion defined by the arch model. The occlusal plane table includes grid lines on the planar surface for recording the initial position of the arch model on the surface and for recording the change in position of the arch model with respect to the original plane of occlusion thereof. An intrusion ruler having equal steps formed along one edge is used to measure vertical displacement of said arch model from said occlusal plane surface.

Abstract: A rigid, non-yielding precision dental articulator instrument for preserving and making available the occlusion plane required to build accurate incuspation of teeth. The device provides initial mounting of maxillary models using a facebow. A 20 degree sliding mounting plate is also provided for aiding in the setting of the Occlusal Plane.

Abstract: In the dental area or other dental problem situations (laboratory, orthodontics, jaw orthopedics, prosthetics, restorative dentistry, surgery) to make the desired position of the teeth recognizable at centric occlusion in centric relation (centric relation occlusion), a set of templates (A, B, C, D, etc.) is provided, whereby each template includes markings (1u, 2ru, to 6ru, 2lu to 6lu, 10, 2ro to 6ro, 2lo to 6lo), which correspond with the proximal contact points of the teeth in the desired position. To this end, each of the templates (A, B, C, D, etc.) is dimensioned according to a different tooth arch length and a different tooth arch form, whereby all templates (A, B, C, D, etc.) of the set cover substantially all jaw and tooth arch forms and jaw and tooth arch sizes which occur in patients.

Abstract: A dental articulator comprising upper and lower bows connected by vertical support members, the upper bow being pivotally connected to the support members for raising and lowering relative to a planar mounting table which is positionable between the bows and parallel to the lower bow, the mounting table having a mounting bar extending perpendicularly from one surface and the mounting table being reversible to dispose a desired surface thereof uppermost and the table also having a supporting pin detachably connected to the forward end thereof for reversible positioning to extend from either surface of the table, and the upper bow also having adjustable pivot means operable selectively to effect lateral movement of the upper bow relative to the table and lower bow when in one position of adjustment but only permit pivotal movement when in a second position.

Abstract: An article of manufacture for planning the restoration of an irregular dentition and being adapted for bilateral use comprising a rigid, formed template presenting an upper concave surface to the viewer while it is positioned above the model of the lower dentition of a patient; the mesial edge of the template is substantially linear and spaced apart from the lingual aspect of the anterior teeth. The proximal edge of the template is spaced apart from the mesial edge sufficiently to extend beyond the third molars. The opposing lateral edges of the template are flanged outwardly from the mesial edge to the distal edge to parallel the diverging dentition and both joining the distal edge; and the concave/convex of the template are of a preset substantially uniform curvature with the radius of the upper surface chosen to correspond to one of the variable radius, curves of Spee and Wilson normally occurring in an existing dentition under analysis.