Abstract: A dental prosthesis system, for the use with at least two dental implants, wherein the dental prosthesis is divided in a first prosthetic part and a second prosthetic part, jointed by a prosthetic screw, and wherein the first prosthetic part is connected to the dental implants through at least two connectors, and such dental prosthesis has an engaging and guidance system, including two female elements, disposed on the top of the first prosthetic part, and two corresponding male elements, disposed on the bottom of the second prosthetic part, whereby the connection between the two female elements and the two male elements is releasable.

Abstract: The disclosure relates to a reconstruction prosthesis including a plurality of prosthesis units connected in series. Each of the prosthesis units includes a main part and a cushion structure. The main part has an abutment insertion opening and an accommodation space. The cushion structure is located in the accommodation space and movably located at the abutment insertion opening and defining an abutment mounting hole connected to the abutment insertion opening. The cushion structure is deformable with respect to the main part.

Abstract: A method of installing a dental prosthetic device includes securing a first guide member to an alveolar arch in a mouth of a patient. The first guide member is utilized to achieve a substantially planar bone surface along the alveolar arch. A second guide member is coupled with the first guide member. The second guide member is utilized to install one or more implants in the alveolar arch through substantially planar bone surface. A dental prosthetic is secured to the one or more implants. The dental prosthetic includes nanoceramic material.

Abstract: A cap part (1) placed on an interface (100) or on an attachment to act jointly as a scanning post. The cap part has a cavity (2) for housing at least one cylindrical portion (101) with a circular base of the interface or of the attachment. The cap part is configured by a single body having an upper portion (11) formed by a solid head (3) without holes or notches, and a lower portion (12) provided with a longitudinal blind hole forming the cavity (2). The blind hole has a retaining segment (4), the inner wall of which is partially or entirely formed by a concave, cylindrical retaining surface (40) with an elliptical or oval-shaped base for retaining by embedding an essentially cylindrical portion (101) of the interface (100) or of the attachment.

Abstract: An abutment for use with a dental implant. The abutment includes a connecting pin configured to be introduced into an associated receiving channel of the dental implant. The connecting pin includes a screw channel for a connecting screw for connecting the abutment to the dental implant. An inner diameter of the screw channel over its entire length up to an opening on an end face is at least as large as the diameter of a screw head of the connecting screw, and a plastically deformed retaining element is provided in order to support the connecting screw.

Abstract: The present invention relates to an implant unit, particularly, a dental implant unit for mitigating impact which may be substituted for a natural tooth, the dental implant unit including: a crown; an abutment which has one side coupled to the crown; and a fixture which is coupled to the other side of the abutment, in which at least one of the abutment and the fixture has an elastic layer that is cut out in one direction, and also relates to a dental implant unit including: a crown; an implant structural body which has one side coupled to the crown, and the other side implanted from a gingiva to an alveolar bone, in which the implant structural body has an elastic layer that is cut out to have multiple layers.

Abstract: A dental implant, including a generally cylindrical body having a proximal open end and a distal closed end and an externally threaded surface, a socket extending distally from the proximal end and terminating at a proximally facing shoulder and an internally threaded hole extending distally from the proximally facing shoulder and a curved portion formed between the proximally facing shoulder and the internally threaded wall.

Abstract: The present invention relates to an implant unit, particularly, a dental implant unit for mitigating impact which may be substituted for a natural tooth, the dental implant unit including: a crown; an abutment which has one side coupled to the crown; and a fixture which is coupled to the other side of the abutment, in which at least one of the abutment and the fixture has an elastic layer, and also relates to a dental implant unit including: a crown; an abutment which has one side coupled to the crown; and a fixture which is coupled to the other side of the abutment, in which at least one of the abutment and the fixture has an elastic layer that is formed at a portion which is in contact with a gingiva when an implant operation is performed using the dental implant unit.

Abstract: An object of the present invention is to provide a method for manufacturing a dental prosthesis capable of properly arranging a dental reinforcement when a dental prosthesis made of resin where the dental reinforcement is arranged is manufactured. The method includes turning information on an intraoral shape into data: designing, in a form of data, a shape of a resin body that is a part formed of resin based on the data; designing, in the form of data, a position of a dental reinforcement that is to be arranged inside the resin body; and forming, in the form of data, a space and an opening that communicates with an outside in the position in the resin body where the dental reinforcement are to be arranged, based on the position, to design a resin body with an opening.

Abstract: The impression jig comprises a main body having an inner channel and a head having an inner channel and adapted for being releasably attached to said main body, wherein the inner channel of the main body is provided with threads and at its lower end portion, with an inner positioning surface, and wherein the inner channel of the head is provided with threads and at its upper end portion, with an inner positioning surface. The impression jig further comprises a tubular screw adapted for guiding through the inner channel of the main body and the inner channel of the head, said tubular screw having an inner channel, and wherein the outer surface of the tubular screw is provided with first threads at an upper section thereof and with second threads at a predetermined distance from a lower section thereof.

Abstract: Provided is an implant unit. The implant unit includes a fixture, which is assembled to an alveolar bone and includes a long hole formed in the depth-wise direction and having an opening on the top of the fixture; an intermediate structure, which is inserted to the long hole via the opening of the fixture; and an abutment assembled to the intermediate structure, wherein a first structure for coupling the fixture to the intermediate structure is formed on the inner surface of the fixture.

Abstract: Dental prostheses are disclosed including a dental prosthesis that can comprise an abutment and a component stabilized with vitamin E. The abutment can be adapted to be secured in a patient's jaw. The component can be adapted to couple the abutment to a dental appliance.

Abstract: An dental implant has a substantially cylindrical hollow base member; an abutment; an implant-abutment junction (IAJ) portion at one end of the base member to retain the abutment to the base member, so that the abutment is able to move within a predetermined distance alone an axial direction of the base member, and a first cushion adapted to be mounted between the abutment and the base member for providing a resistance force when the abutment is pressed to move relatively toward the base member and providing a bouncing back force when the abutment is released from the pressing.

Abstract: A dental implant system includes a dental implant, an abutment adapted to be inserted in an axial hole of the dental implant, and a locking screw adapted to be inserted in an axial through-hole of the abutment and to be screwed into the axial hole of the dental implant. The axial through-hole defined in the abutment includes a frustoconical portion configured to come into contact with a correspondingly frustoconical portion of the locking screw, wherein the median circumference of the frustoconical contact surface between the abutment and the tightening screw is configured to be disposed under the crest/connection line.

Abstract: The invention relates to a dental restoration, having a base which in particular comprises an implant (1) in combination with an abutment (4), and a supraconstruction (3) which is fixed to the base, in particular by adhesive bonding, wherein the base has a screw connection having a screw head which extends over or on the base. Said screw head connects the two parts of the base to each other so as to be fixed against rotation, and has an access channel (10, 35) for the screw, the opening of which is offset with respect to the extension of the axis of the screw in the lingual direction of the supraconstruction (3). The diameter of the access channel (10, 35) is smaller than the diameter of the screw head of the screw, and the screw can be screwed through the access channel (10, 35), i.e. can be screwed in and screwed out.

Abstract: An dental implant has a substantially cylindrical solid base member; an abutment; an implant-abutment junction (IAJ) portion at one end of the base member to retain the abutment to the base member, so that the abutment is able to move within a predetermined distance in an axial direction of the base member, a first cushion adapted to be mounted between the abutment and the base member, and a second cushion, preferably an elastomer, which is sandwiched between the IAJ portion and the abutment, wherein the first and second cushion are able to provide a resistance force when the abutment is pressed to move relatively toward the base member and providing a bouncing back force when the abutment is released from the pressing.

Abstract: A spinal fixation device includes a housing defining a longitudinal axis, a bone screw member, a locking ring, and a crush ring. The bone screw member includes a head that is selectively securable within the housing and a threaded shaft. The locking ring is disposed within the housing and is radially expandable to a partially expanded position when the head of the bone screw member is positioned therein to retain the head within the housing. The crush ring is disposed within the housing proximal to the locking ring and adjacent the head of the bone screw member. The crush ring pushes against the head of the bone screw member when it transitions from an initial state to a deformed state when a force is applied thereto, which expands the locking ring to a fully expanded position to fix the bone screw member to the housing.

Abstract: An dental implant has a substantially cylindrical solid base member; an abutment; an implant-abutment junction (IAJ) portion at one end of the base member to retain the abutment to the base member, so that the abutment is able to move within a predetermined distance alone an axial direction of the base member, a first cushion adapted to be mounted between the abutment and the base member, and a second cushion, preferably an elastomer, which is sandwiched between the IAJ portion and the abutment, wherein the first and second cushion are able to provide a resistance force when the abutment is pressed to move relatively toward the base member and providing a bouncing back force when the abutment is released from the pressing.

Abstract: An abutment is obtained that enables an operation of detaching the abutment from a fixture to be readily performed without having a patient open his/her mouth wide while inhibiting accidental ingestion or swallowing of an abutment that comes off. In a dental implant 100 comprising a fixture 110 and an abutment 120, when a fitting recess 121 of the abutment 120 is fitted onto a fixture head 112 so that a space is formed between a top surface 112b 1 of the fixture head 112 and a bottom surface 121a of the fitting recess 121, the fixture head 112 is secured to the fitting recess 121 by a frictional force, and an instrument insertion hole 129 for inserting an instrument for disengaging the securement by the frictional force in the space is formed on a sidewall 121c of the fitting recess 121.

Abstract: A system is disclosed for installing a dental implant in a jawbone of a patient. The system includes a threaded drive shaft rotatable about an axis and a guide for supporting the drive shaft with its axis oriented in a path along which the implant is to be installed. The guide has a threaded bore for receiving a drive shaft and an opening which extends parallel to the axis of the drive shaft and opens radially outwardly from the bore. The drive shaft can then be engaged with and disengaged from the guide by radial displacement of the shaft parallel to its axis. A drill is adapted to be releasably coupled to a leading end portion of the drive shaft and may be a self-drilling implant. Rotating the drive shaft causes the drill to penetrate the jawbone of the patient.

Abstract: The invention concerns a dental implant assembly including an implant component (10) which is engaged in use with a bone structure and which has an internally threaded socket (14). The assembly also includes a dental component (20), typically an abutment, crown or prosthetic tooth, which seats on the implant component and which has a passage (24) through its base (22). The dental component is clamped to the implant component by a prosthetic retaining screw (28) having a head (32) and a shank (30) which passes through the passage and is screwed into the socket of the implant component. The invention is characterized in that a separate washer (36) including a low friction polymeric material is located rotatably on the shank of the screw adjacent the screw head in order to reduce friction between the head of the screw and the base of the dental component when the screw is tightened up.

Abstract: A medical device (1) for dental prosthetic systems (2), the dental prosthetic system (2) being of a type comprising: a dental product (3) comprising a housing seating (6) longitudinally extending along a height of the dental product, an implant (5) destined to be installed in a seating made in a bone tissue of a maxilla or mandible of a patient, a fixing element (4) configured such as to insert in the housing seating and enabling engagement of the dental product (3) to the implant (5); the medical device (1) comprising a preformed solid body having a predetermined volume and an elongate conformation configured such as to insert in the longitudinal housing seating (6).

Abstract: A dental implant abutment assembly imitates a micro-motion mechanism to direct occlusal forces internally, and uniformly distribute the occlusal forces into the body of an ossoeintegrated dental implant. The micro-motion mechanism is configured to imitate the biomechanical behavior of the periodontal ligament through a compressive action that dampens vertical, horizontal, and angular forces. A compressive ring provides a dampening effect to supportive components of the assembly. A compressive coil redirects vertical forces along a longitudinal axis of the assembly. An implant body osseointegrates into the dental alveolus. A central mobile element seats in the dental body. The compressive coil extends along the central mobile element to absorb vertical forces. The compressive ring seats on the collar of the dental implant. A threaded cannulated housing securely holds the central mobile element and the compressive coil to form a single unit.

Abstract: A dental abutment system permitting to limit the steps and time required for a dental implant procedure. The dental abutment system (10) comprises a cap (12) coupled to a retentive member (14) that is coupled to a sheath (16). The cap (12) has a shaft (18) for coupling with a bore (24) of a dental implant (20) and the sheath (16) is coupled to the bore (24) of a dental prosthesis (26) such that the dental prosthesis (26) is frictionally retained to and removable from the cap (12). The retentive member (14) may include an area-of-weakness permitting it to break-away from the cap (12) to avoid the transmission of excessive forces to the implant (20).

Abstract: A screw channel directing device for a dental superstructure includes a screw channel part and an implant cooperating part, the former having a screw member seat with an elongated screw hole in the proximal end. The proximal end of the screw channel part is bowl shaped, having a convex outer bottom. The implant cooperating part comprises a collar-shaped lower implant cooperating part to be connected to a dental implant and a collar-shaped upper implant cooperating part. The lower implant cooperating part and said upper implant cooperating part form a first ball joint. The upper implant cooperating part has a distal concave seat with a radius corresponding to the radius of the outer bottom surface of the screw channel part to form a second ball joint.

Abstract: In some aspects, drill guide positioning rings to be coupled to a template material of a surgical guide in a region to be drilled can include one or more retention features to receive one or more of a series of drill guides, where the retention features are configured to temporarily engage, retain, or otherwise secure the drill guide within the drill guide positioning ring, where the temporary engagement axially couples the drill guide along its longitudinal axis with respect to the drill guide positioning ring.

Abstract: A removable denture system comprising a support beam fixedly attached to the individual's alveolar ridge above the mucous membrane by a plurality of dental implants, and a denture generally conforming with the dental parameters of the individual and integrated with a super-structure. The super-structure comprises at least a portion shaped in confirmation with the support beam, and a denture locking arrangement for removably though fixedly articulating the denture to the support beam preventing unintentional disengagement of the denture.

Abstract: A temporary prosthesis for use during the osseointegration process of an installed dental implant includes load-absorbing properties and is mountable to the implant, providing an aesthetic appearance to the implant site, while preventing or minimizing loads on the implant itself.

Abstract: The dental implant system includes implants having integral abutments therewith for the removable or fixed attachment of plural or single prosthetic teeth, as appropriate. The system for removable dental prostheses includes a metal housing permanently installed in the removable prosthesis, and a rubber retentive insert installed in the housing. The insert is removably installed over the abutment of the implant to secure the dental prosthesis thereto. The system includes transfer copings for transferring an impression to the lab for manufacture of the prosthesis, and lab processing copings and analogs for handling and forming the prosthesis during manufacture. The system may be assembled as a kit having some or all of the above components.

Abstract: A dental implant assembly (20) including a core body (40, 140, 240, 340, 440) for engaging a tooth-replicating device (52). The core body (40, 140, 240, 340, 440) is disposed in an anchor body (24, 124, 224, 424), and a screw cap body (58) is disposed about the outer attachment surface (30, 130, 230, 430) of the anchor body (24, 124, 224, 424). The screw cap body (58) engages the bone (22) of a person to support the dental implant assembly (20) and holds the core body (40, 140, 240, 340, 440) and the anchor body (24, 124, 224, 424) together.

Abstract: A dental restoration is provided which includes a base structure and a pre-fabricated over structure which at least partially covers the base structure. An interconnecting material interconnects hardened bite elements of the over structure with the base structure. In accordance with the method of producing a dental restoration, the interconnecting material applied onto the base structure is hardened fully after the over structure has first been applied onto the still malleable interconnecting material.

Abstract: In a dental implant comprising a mounting post, a crown supported on the mounting post and a spring element supported between the mounting post and the crown so that the crown is movable within limits in axial direction relative to the mounting post against the force of the spring element, the crown is a single part and connected to the mounting post by a form locking connection while the spring element is effective directly between the mounting post and the crown.

Abstract: A biofunctional dental implant wherein a crown portion is connected to a root portion without the use of the conventional short screws, or the like. A flexible abutment projects upwardly from the root portion, and the crown portion is positioned in surrounding engagement with the flexible abutment. A threaded abutment post is advanced through the flexible abutment and into receipt by the root portion. The advancement of the abutment post through the flexible abutment generates an outward pushing force for causing a plurality of flexible splines of the abutment to bend outwardly and into engagement with an elastomeric cap of the crown portion for holding the crown portion atop the root portion. In one preferred embodiment, a replacement crown portion is detachably connected to an existing root portion by way of a removable abutment screw so as to enable a broken or worn crown portion to be removed and replaced without the need for a new surgery.

Abstract: A preparation (10, 11,12,13) to be fixed to a natural tooth part or tooth, in particular for the replacement of a load-bearing tooth part, is for example a filling for a drilled-out tooth (1), a crown, bridge or prosthesis to be placed on a tooth stub, or a tooth pin to be fixed in a tooth root for fastening an artificial tooth, a bridge or a prosthesis. The preparation has surface regions which consist of a material with thermoplastic properties. The preparation (10, 11, 12,13) is designed in a manner such that it has oscillation properties with such low damping losses that for a liquefaction of the material with thermoplastic properties by way of oscillations there are local stress concentrations required, and in a manner such that such stress concentrations only occur in the region of the preparation surface.

Abstract: A temporary attachment for a jaw implant has a molded piece made of an elastic material situated between a base and a head. The molded piece is deformable under the influence of a screw and this deformation is transferred to the surrounding tissue. By repeated tightening of the screw during a healing phase, the gingival tissue can be widened without resulting in tissue injury. Due to the shape of the base or the head, a predetermined deformation can be produced, and may be radially asymmetric. The direction of deformation can also be selected by varying the angular position of the base or the head with respect to the longitudinal axis of the implant.

Abstract: A preparation (10, 11,12,13) to be fixed to a natural tooth part or tooth, in particular for the replacement of a load-bearing tooth part, is for example a filling for a drilled-out tooth (1), a crown, bridge or prosthesis to be placed on a tooth stub, or a tooth pin to be fixed in a tooth root for fastening an artificial tooth, a bridge or a prosthesis. The preparation has surface regions which consist of a material with thermoplastic properties. The preparation (10, 11, 12,13) is designed in a manner such that it has oscillation properties with such low damping losses that for a liquefaction of the material with thermoplastic properties by way of oscillations there are local stress concentrations required, and in a manner such that such stress concentrations only occur in the region of the preparation surface.

Abstract: An artificial tooth or teeth and occlusion-controlling system(s) thereof, wherein information about the situation of occlusion in the mouth of a patient is transmitted to a computer (151) from a biting-pressure sensing element(s) (155) or film(s) incorporated in the present invention, and said computer (151) dictates control-signals to make a driving motor (152) or motors drive and adjust an occlusal surface of said patient in place so as to give a desirable, appropriate functional occlusion to said patient's comfort instantly.

Abstract: An improved dental prostheses includes an implant abutment mounted to an abutment tooth and having an endless O-ring groove formed about the outer axial surface of the implant abutment in a plane generally transverse to the implant abutment axis. The implant abutment has a tapered surface which mates closely with a similarly tapered retainer cavity in the dental prosthesis to frictionally support the same and has a complementary O-ring groove defined in the retainer surface. A resilient O-ring retentive element is fitted over the implant abutment such that the ring cross section is partly received within the implant abutment groove and partly within the retainer groove, thereby forming a resilient interference fit between the dental prosthesis and the implant abutment. The arrangement enables easy removal of the prosthesis for hygiene related activities and application to multiple abutments to support an appliance.

Abstract: A stable dental prosthesis or artificial tooth which makes occlusal adjustment easier and which includes a stress breaking layer made of a flexible buffering material and provided between an occlusal surface portion and a connecting portion of the artificial tooth. The stress breaking layer made of the flexible buffering material can adjust the biting force in response to any varying occlusal pressure, allowing flexibly adjustment of position movement of the occlusal surface portion, and also allowing its vertical, horizontal and oblique movements, while the person wearing the artificial tooth is resting. The artificial tooth also allows easy adjustment of the cusp angle of the occlusal surface portion.

Abstract: A prosthetic device for intraosseous dental implants includes an intraosseous support implant (11) and an intraplantar pin (12). The support implant (11) has a blind cavity (18) open towards its top and with at least one internal zone having a conical surface (20). The intraplantar pin (12) has a shank (21) which is intended to be implanted in the cavity of the implant and a transmucosa connection head (22) lying above the implant. The shank (21) has at least one conical external zone (23) of forced coupling with the conical internal zone (20) of the cavity of the support implant.

Abstract: Given a single tooth implant with a base member and an abutment for a crown, whereby the base member, in sequence from the coronal to the cervical end, comprises a positive lock region with positive lock elements for joining to the abutment and a centering region and the abutment, complementary thereto, comprises a positive lock section and a centering section, the positive lock elements of the positive lock region are arranged offset from the face wall of the base member. The centering region can directly adjoin the positive lock region. According to an advantageous embodiment, a seal ring can be provided between the abutment and the base member.

Abstract: An engagement mechanism for dental prostheses that include supporting pins with headed terminations and implant and/or abutment members with cooperative sockets. A dental implant firmly mounted to a user's bone is provided at the distal end with a socket defining a cavity of cooperative dimensions to receive the headed termination. The headed termination is firmly kept in the cavity. In this manner, better utilization of the limited inter dental space is achieved. One way of securing the headed termination is by using a cementitious compound to bind the headed termination. Another way is to use an O-ring to secure the headed termination. The socket can be positioned directly in the distal end of an implant member or in an abutment.

Abstract: Claspless removable partial dentures have a metal bar that connects to a metal framework to which is attached metal occlusal rests. The metal occlusal rests fit into prepared slots in the natural teeth on either side of the edentulous area. This metal framework supports the resilient dental material that bonds the denture teeth in their position and is bonded to the metal framework. This resilient dental material extends into the inward curve of the natural teeth on either side of the edentulous area, and by sliding into the inward curve, the partial is held in position. The metal framework is left open beneath the denture teeth so that each denture tooth can move into the resilient dental material, which then absorbs the force of mastication.

Abstract: A resilient connecting structure for individually and resiliently connecting a dental prosthesis structure to a base component. The connecting structure is adapted to simulate the link provided by a natural periodontal ligament between a natural tooth and a natural healthy gum. The connecting structure thus allows individual three-dimentional freedom of pivotal movement about the base of the prosthesis structure, including rotation about a longitudinal axis of the latter. In one embodiment of the invention, the connecting structure is incorporated in an artificial dental structure that also includes the dental prosthesis and the base component. The dental prosthesis has dental body defining a crown section, a neck section and a root section. The base component has at least one base recess formed therein for receiving a section of said dental prosthesis. The connecting structure includes a membrane made of a resilient membrane material. The membrane is mounted on said root section of said dental prosthesis.

Abstract: A tooth implant arrangement has an implant body which can be inserted in a jaw or jawbone and a structural member which can be detachably secured to the implant body by means of a bolt-like mounting element, and on which a cap, a replacement crown or the like can be placed and secured. The structural member is mounted so as to be resiliently movable relative to the implant body in the axial and/or the sagittal directions. The mobility of a tooth implant arrangement of this type in the jaw or jawbone is comparable to that of a natural tooth.

Abstract: Enossal tooth implant for firmly seating dental prostheses has an essentiy cylindrical base member, which is introducible into a bore introduced in a jaw bone and has a blind bore open toward its coronal end, a spacer sleeve which has an inside bore, is emplaceable on a coronal face edge of the base member and has an arrangement for a twist-resistant fastening to the base member, and has a fastening head for a dental prosthesis and an implant post which is introducible through the inside bore into the blind bore and connectable to the base member.

Abstract: A dental implant-abutment combination that absorbs the forces of chewing, shifts some of the horizontal loads to a more vertical plane, shifts the horizontal loads which remain, to a point below the crest of the bone, lowers the pivoting axis, and distributes the forces over a larger surface area, all so as to prevent saucerization in the bone surrounding the implant, thereby preventing bacteria from gaining access to the deeper areas, and preventing implant failure due to the loss of supporting bone.

Abstract: A dental implant system has an inner housing removably received in an outer housing embedded in the bone for allowing a retentive screw or post retaining a prosthesis to be easily removed. A suspension mechanism provides lateral movement of the prosthesis for transferring forces from biting or chewing to the inside walls of the outer housing. A resilient coating on the inside wall of the inner housing absorbs the external forces. An interlocking gingival collar and abutment arrangement limit rotation of the prosthesis.

Abstract: A primary implant member anchored in the jaw receives a secondary member which is held in the primary member by direct engagement by the head of a screw which bottoms in the primary member and O-ring bridges the radial play between these members in a dental implant. As a result, the retention of the secondary member does not depend on the state of the O-ring and the force with which the O-ring is held. Axial mobility and inclination of the secondary member is also permitted by the O-ring bridge.

Abstract: A flexible tooth for mounting in dentures wherein the top of the tooth or crown and base of the tooth are separate parts bonded together by an annular, wedge shaped elastomeric layer. Limited area planar contact between the crown and base along the central axis provides unyielding resistance to biting forces while angular movement within the elastomeric layer allows flexibility of the crown with respect to the base so as to give a user the feeling of a natural tooth.