Abstract: In embodiments, a processing device detects a margin line in a model of a preparation from one or more images. The processing device determines, for each segment of a plurality of segments of the margin line, a quality score for the segment. The processing device determines that a segment of the margin line has a quality score that is below a quality threshold, wherein the segment of the margin line was generated based on a first set of images. Responsive to determining that the segment of the margin line has the quality score that is below the quality threshold, the processing devices updates the three-dimensional model of the preparation by replacing a portion of the three-dimensional model associated with the segment of the margin line with image data from at least one of a new image or a second set of images.

Abstract: A polymerizable composition, which includes (a) at least one radically polymerizable oligomer, (b) at least one radically polymerizable monomer and (c) at least one initiator for the radical polymerization, characterized in that the radically polymerizable oligomer (a) is selected from the group consisting of aliphatic urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers and polyether urethane (meth)acrylate oligomers, and the radically polymerizable monomer (b) is polyfunctional.

Abstract: A method for producing a guide rail having the steps of: (A) generating or providing a virtual 3D model of a dental prosthesis with at least one virtual model of a machined prosthetic tooth to be arranged in a prosthesis base; (B) calculating a volume to be removed from a prefabricated prosthetic tooth; (C) generating a virtual model of a guide rail which is fixed to a mount for fastening the prefabricated prosthetic tooth such that the guide rail enables guidance of a milling head and/or a cutting tool of known dimensions, in such a manner that the volume to be removed from the prefabricated prosthetic tooth is traversed with the milling head; and (D) producing a physical guide rail on the basis of the virtual model of the guide rail using a CAM method. Also disclosed are an apparatus for implementing the method, a method for basally shortening prosthetic teeth, and a method for producing a dental prosthesis with such a method for producing a guide rail.

Abstract: The present invention relates to a polymerizable composition, which comprises (a) at least one radically polymerizable compound and (b) at least one initiator for the radical polymerization, wherein the composition furthermore comprises (c) at least one UV absorber and (d) at least one optical brightener and comprises at least one radically polymerizable oligomer and at least one radically polymerizable, polyfunctional monomer as the at least one radically polymerizable compound (a).

Abstract: The composition for bone regeneration, comprises a) a first phase (3) comprising a plurality of cross-linked hydrogel chunks (1) having a mean diameter of less than 1000 ?m and incorporating an amount of mineral particles (2); and b) a second phase (4) comprising a physiologically-compatible aqueous liquid acting as a carrier for the chunks; the chunks being embedded in the second phase (4). The mineral particles (2) have a mean diameter of less than 10 ?m and the amount of the mineral particles (2) is less than 20 weight-% of the first phase.

Abstract: An intraoral scanning apparatus has a mouthpiece and a transport apparatus that defines at least a first curved track within the mouthpiece. An image sensor is movable along the first curved track. A scanner is movable along the first curved track, scanning in synchronization with the image sensor and having an illumination source that has a laser light source and beam-shaping optics in the path of the laser light for forming a linear light pattern. At least one actuator is energizable to move the image sensor and scanner along the first curved track for image acquisition. A control logic processor synchronizes the scanner and image sensor for automated acquisition of surface contour data. A display is in signal communication with the control logic processor to process and display the acquired surface contour data.

Abstract: An additively manufactured dental crown with a wall having a bottom edge and an occlusal portion joined with the wall opposite the bottom edge. The wall and occlusal portion form an interior surface and an opposing exterior surface. By using additive manufacturing and materials for such, the dental crown can have thin walls with a thickness of less than 300 microns at the thinnest portion of it and can include fine printed features such as identifiers, internal ribs, slots, porous meshes, and retention elements.

Abstract: The present invention relates to a dental device adapted to be connected to a dental implant fixture, wherein the device at least comprises an scan body comprising polyether ether ketone (PEEK) adapted to be connected to the dental implant fixture and adapted to be captured by a scanning device, and a customizable gingiva body mounted to the scan body in a fixed position, wherein the gingiva body comprises a thermoplastic polymer adapted to be captured by a scanning device and at least partially comprising a polymer comprising a melting point of ?35° C. and ?80° C. In addition, the invention relates to a process for the production of a customized dental model and the use of a digital model obtained by the inventive process to produce customized crown models.

Abstract: A method of estimating and restoring includes: determining a temporary finish line having multiple points on scan data as an imaginary boundary line between a formed portion and an unformed portion of the abutment tooth or abutment tooth model; deleting the scan data including the temporary finish line in an edge portion of the abutment tooth or abutment tooth model; extending, in a portion in which the scanned data is deleted, a crown-side temporary finish line and a root-side temporary finish line in directions supplementing the deleted portion of the scan data, respectively; and estimating and restoring the finish line of the edge portion which is formed on the outer side than the edge portion of the deleted scan data based on the extended crown-side temporary finish line and the extended root-side temporary finish line.

Abstract: A system and method for fabricating dental crowns and bridgework includes the steps of: selecting one or more model teeth; forming a mold around the model tooth using a soft flexible material; removing the model tooth from the mold; adding wet dental restoration material to the mold and vibrating the mold; pressing framework into the wet restoration material; vibrating the mold and removing moisture; allowing the restoration material to dry and removing the molded crown or bridgework from the mold; trimming off excess restoration material and adding restoration material to the margin area as needed; baking the crown or bridgework in an oven without the mold and removing the crown or bridgework from the oven when the restoration material is at least partially cured.

Abstract: A dental restoration cementing device for cementing a dental restoration is disclosed having a closable axial passage to a base having a hollow interior which is open into an occlusal direction. The device includes a preferably elastic body portion dimensioned to tightly fit into the hollow interior of the base via the passage of the dental restoration. The device further includes a hollow cementing portion extending from the body portion. The cementing portion has a lateral opening which is located outside the base when the body portion is fitted into the hollow interior of the base such that a pathway is formed from the interior of the cementing portion through the lateral opening into a gap between the dental restoration and the base. The dental restoration cementing device allows for precisely, quickly and cost efficiently cementing the dental restoration to the base.

Abstract: A method of reinforcing a metallic material includes adding graphene to an alcohol solution; subjecting the alcohol solution containing graphene to sonication; mixing a metal powder with the alcohol solution containing graphene; milling the metal powder and alcohol solution containing graphene mixture; drying the metal powder and alcohol solution containing graphene mixture to form a composite powder; subjecting the composite powder to a densification process followed by a hot isostatic pressing treatment to form a composite material; and molding the composite material by hot extrusion.

Abstract: Disclosed is a tooth replacement forming device (10) comprising an abutment on or to which a dental structure made of dental material, especially ceramics, can be fastened. The abutment is mounted on the implant using a detachable connection, in particular a screw connection, the abutment being provided with an implant connection, a collar, and a tubular portion to be connected to the dental structure. The disclosed device (10) is characterized in that a surrounding auxiliary element made of a residue-free material is arranged in such a way as to rest against the tubular portion.

Abstract: A method of fabricating a dental restoration is provided that includes the initial step of providing a powder of a dental material. An amount of a binder is then selectively deposited onto the powder of the dental material to produce an unfinished layer of the dental material. Multiple layers of the dental material are then produced by continually providing a powder of dental material and selectively depositing an amount of a binder until a three-dimensional unfinished model is produced. The unfinished model is then separated from an amount of unaffected powder, and is sintered to produce a three-dimensional dental restoration having a functionally-graded structure.

Abstract: A dental mill blank having a multi-layer structure has been required to improve the reproducibility of a color tone of the natural tooth in a dental crown restoration cut by CAD/CAM technique. Especially, a reproduction of the color tone of a cavity or a groove is required in a dental crown form of the molar tooth. The present dental mill blank has three or more layers wherein a color of a 30% position layer which includes a 30% position which is a position spaced from a surface of the dental mill blank of a W layer-side by 30% satisfies a specified relational expression, and a contrast ratio of the 30% position layer is within a range of the contrast ratio of the D layer×(0.70 to 1.00).

Abstract: A dental crown consisting essentially of stabilized zirconia. The dental crown is particularly suited for pedodontic and veterinary applications and most preferably for pedodontic applications. The zirconia crown may be formed by one of several manufacturing processes. The formed crown exterior can be polished and fine polished and can be covered, preferably only partially, with a porcelain glaze to produce an aesthetic outer surface mimicking a natural tooth. Also disclosed is a method for providing and placing a dental crown upon a natural tooth.

Abstract: An anatomical implant application, such as a bone implant application for instance, can receive an anatomical image that is representative of an anatomical structure. The anatomical implant application can generate an implant image that is associated with the anatomical structure. The generated implant image can define an inner surface that faces the anatomical image. A plurality of distances can be determined from respective locations of the inner surface of the implant image to the anatomical image in respective straight lines. The distances may represent a superimposition of the implant image over the anatomical image. The distances may be compared to a tolerance. The inner surface may be repositioned so as to change at least the select one of the distances. An implant, such as a bone implant for instance, may be fabricated in accordance with data that is associated with the implant image.

Abstract: Provided herein are composite materials comprising a thiol-ene polymer resin in a continuous phase and a filler in a discontinuous phase, the filler comprising fluorapatite crystals and silica. Further provided are methods of using these composite materials as restoratives in dental applications. This dental composite is labeled as “smart” because, when the shrinkage stress of the composite is greater than a programmable or pre-selected threshold level, it will elicit visual clues for the dentist.

Abstract: The present invention relates to oral care and dental implants. In particular, the present invention is a dental implant with a removable protective film that is used to prevent implant loss and remove unwanted residual cement.

Abstract: A dental crown consisting essentially of stabilized zirconia. The dental crown is particularly suited for pedodontic and veterinary applications and most preferably for pedodontic applications. The zirconia crown may be formed by one of several manufacturing processes. The formed crown exterior can be polished and fine polished and can be covered, preferably only partially, with a porcelain glaze to produce an aesthetic outer surface mimicking a natural tooth. Also disclosed is a method for providing and placing a dental crown upon a natural tooth.

Abstract: Disclosed is a method for modeling and manufacturing a denture for a patient, where the denture comprises a gingival part and artificial teeth, wherein the method comprises: providing a 3D scan comprising at least part of the patient's oral cavity; virtually modeling at least part of the denture using the 3D scan; obtaining virtual teeth to represent the artificial teeth; virtually modeling at least one of the virtual teeth to obtain a set of modeled virtual teeth; manufacturing the modeled virtual teeth in a first material; manufacturing the gingival part in a second material; and manufacturing at least part of the denture by means of computer aided manufacturing (CAM).

Abstract: A procedure for fabricating an individual abutment for a dental prosthesis for an implant anchored in an area of the jaw with an implant attachment running on the abutment side, using a working model molded by the jaw area equipped with the implant. The sulcus area of the gum uncovered above the implant and shaped by a sulcus-former extending from the implant attachment is reproduced in the working model. The abutment has a sulcus section running within the sulcus area and an adjoining head section to admit a part of a dental prosthesis. The sulcus area of the working model having an auxiliary implant attachment corresponding to the implant attachment is measured, and a sulcus section model determined with a circumferential surface and a de-facto sulcus line limiting it on the implant side.

Abstract: The systems and methods disclosed herein employ a scanning system for capturing highly detailed digital dental models. These models may be used within a dentist's office for a wide array of dental functions including quality control, restoration design, and fitting. These models may also, or instead, be transmitted to dental laboratories that may, alone or in collaboration with the originating dentist or other dental professionals, transform the digital model into a physical realization of a dental hardware item.

Abstract: Root canal abutment devices and methods which facilitate the adjustment or removal of an oral appliance, e.g., a crown or bridge, from a reconfigurable abutment assembly are described. The adjustable abutment assembly may be secured within a pulp chamber of a pre-existing tooth. The abutment assembly has a projecting abutment portion with one or more shape memory alloy sleeves or plates or elements extending along the abutment. Each of the sleeves has a length with at least one curved or arcuate portion. Energy may be applied to the elements such that the arcuate portion flattens to allow for the oral appliance to be placed thereupon while removal of the energy allows the elements to reconfigure into its curved configuration thereby locking the oral appliance to the abutment. Removal of the oral appliance may be effected by reapplication of energy to the elements.

Abstract: Provided are antibacterial and antimicrobial surface coatings and dental materials by utilizing the antimicrobial properties of copper chalcogenide and/or copper halide (CuQ, where Q=chalcogens including oxygen, or halogens, or nothing). An antimicrobial barrier is created by incorporation of CuQ nanoparticles of an appropriate size and at a concentration necessary and sufficient to create a unique bioelectrical environment. The unique bioelectrical environment results in biocidal effectiveness through a multi-factorial mechanism comprising a combination of the intrinsic quantum flux of copper (Cu0, Cu1+, Cu2+) ions and the high surface-to-volume electron sink facilitated by the nanoparticle. The result is the constant quantum flux of copper which manifests and establishes the antimicrobial environment preventing or inhibiting the growth of bacteria.

Abstract: Disclosed is a ceramic sintered shaped body containing Y2O3-stabilized zirconia with a sintered density of at least 99% of the theoretical sintered density and having a mean grain size of <180 nm. The zirconia fraction of the sintered shaped body comprises tetragonal and cubic phases. Also disclosed is a process for the production of a ceramic sintered shaped body containing Y2O3-stabilized zirconia, which process comprises dispersion of a submicron powder and comminution of the dispersed submicron powder by means of grinding media having a diameter of less than or equal to 100 ?m to a particle size d95 of <0.42 ?m; shaping of the dispersion to form a body, and sintering of the body to form the sintered shaped body.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: A fluorine-containing porcelain, such as a porcelain material comprising a fluorine-doped glass, is provided for use in dental applications. The porcelain may be used to overlie at least a portion of a dental component such that an interface between the porcelain and the dental component comprises a fluorinated metal oxide. Methods for producing such fluorine-containing porcelains and for treating dental components with such fluorine-containing porcelains are also provided. The fluorine-containing porcelain may exhibit enhanced bonding to the underlying dental component such as a high strength ceramic.

Abstract: One subject of the invention is a composition comprising from 5 to 65%, by weight relative to the total weight of the composition, of calcium silicate crystals; from 1 to 20%, by weight relative to the total weight of the composition, of calcium carbonate crystals; in addition from 0 to 50%, preferably from 1 to 40%, by weight relative to the total weight of the composition, of a compound of general formula mCaO.nSiO2.pH2O in which m and n, each independently, vary from 1 to 3 and p varies from 3 to 6; the ratio between the particle size d50 of the calcium silicate crystals and the particle size d50 of the calcium carbonate crystals being less than 10; another subject of the invention is a process for preparing said composition, and also the use of said composition in the dental field.

Abstract: A palladium-based alloy having a coefficient of thermal expansion (CTE) of about 12.0 to about 13.0 and having one or more of the following additive metals: platinum, gallium, molybdenum, tin, silicon, ruthenium, rhenium, indium, tungsten, niobium, boron and lithium.

Abstract: The invention relates to a dental milling block (1) comprising a dental article (2) having an outer surface, the dental article having been produced based on personalized data, wherein the outer surface of the dental article is at least partially covered with a surrounding material. The invention further relates to a process of producing a dental milling block, the process comprising the steps of: •a) providing a personalized Data Set C containing geometry data of the dental article and colour data related to said geometry data, •b) generating a layer of hardenable material on a surface, •c) applying a colour agent to the layer of hardenable material of step b), wherein the colour agent is applied to at least some regions of those areas of the layer of hardenable material which are related to the geometry data of the dental article, •d) consolidating the result obtained in step c) thereby obtaining an at least partially hardened layer of material.

Abstract: Various methods and systems are provided for multifunctional denture systems. In one example, among others, a multifunctional oral prosthetic system includes an oral prosthetic device that may be located in an oral cavity. The oral prosthetic device includes a plurality of sensors and an internal module in communication with the plurality of sensors. The internal module is configured to provide sensor data corresponding to at least one of the plurality of sensors to an external processing unit when located in an oral cavity.

Abstract: The present invention relates to an organically modified silicic acid (hetero) polycondensate or a composite comprising an organically modified silicic acid (hetero) polycondensate and a filler material for use in a dental procedure, particularly in a dental medicine procedure comprising at least a part or all of the following steps: (a) Transfer of said organically modified silicic acid (hetero) polycondensate or said composite in the form of a block and hardening of said block through organic cross-linking, preferably in a thermal and/or redox-induced manner, (b) Intra-oral measuring of the area requiring treatment in the mouth of the patient or a model or impression of this area outside the patient's mouth with the aid of a 3D imaging device, (c) Transfer of the produced imaging data to a computer unit, (d) Production of a virtual design to be inserted in the mouth of the patient with the aid of said computer unit, then either (e1) Grinding out a fully anatomical form of this design from a block made of

Abstract: The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Abstract: Methods for making a layered dental appliance. Some methods can include providing a solid structure (e.g., a die or a dental core, such as a fully sintered ceramic dental core) having a desired outer shape, and applying a first slurry to the solid structure to form a first free form layer on the solid structure. The method can further include solidifying the first free form layer on the solid structure, and machining the solidified first free form layer to a desired shape to form a first article comprising the solid structure and a first shaped layer. The method can further include applying, solidifying, and machining a second layer in a similar way to form a second article comprising the solid structure, the first shaped layer, and a second shaped layer. In some methods, the free form layers are not exposed to a high temperature prior to being machined.

Abstract: A dental crown removal apparatus easily and efficiently removes dental crowns, caps or other dental implants from a tooth. Specifically, the present invention provides a dental crown removal apparatus having a first elongated beak and a second elongated beak arranged in a pliers-type arrangement. The first elongated beak has a first beak portion angularly extending from a first handle, and a second beak portion angularly extending from the first beak portion, the first elongated beak engaging the top of a crown, cap or other dental implant. Moreover, the second elongated beak extends angularly from the second handle, the first beak portion of the first elongated beak and the second elongated beak arranged in parallel when the apparatus is in a closed configuration. Methods of using the same are further provided.

Abstract: The present embodiments relate to health monitoring systems and, in certain embodiments, to take-home monitoring systems designed for oral appliance monitoring. Embodiments include a method for obtaining data from an oral appliance. The method comprises placing an oral appliance comprising embedded electronics in an oral cavity, wherein the embedded electronics collect data; transmitting the data to a reader, wherein the reader comprises a computer, tablet computer, smart device, reader box, relay transmitter, or a combination thereof.

Abstract: The present invention relates to a multi-colored shaped body having layers arranged on top of one another for producing dental restorations, a process for its production and its use for the manufacture of dental restorations.

Abstract: Herein are provided methods, systems, computer-readable media, techniques and processes for adjusting dental prostheses based on soft tissue. These include allowing an operator to define the surface of a dental prosthesis, such as an abutment, that is proximal to the patient's gum relative to a 3D scan of the patient's gums. The operator can define the offset of that surface as well as the limits of that surface.

Abstract: The invention relates to a new kind of tooth replacement crown and tooth replacement bridge, of which the components are a framework and a veneer, which are reversibly connected to each other by a macro-retentive bonding system, and a method for producing the components, in which method these components are preferably produced by means of computer-aided design and computer-aided manufacturing.

Abstract: A temporary supraconstruction for a dental implant or a core for a temporary supraconstruction for a dental implant, characterized in that it includes a material having a modulus of elasticity of less than 300 MPa, preferably in the range of from 15 to 20 MPa.

Abstract: The present invention provides a dental crown formed of a thermoplastic polymer material, the crown comprising: a tooth shaped top surface; and flexible side surfaces, at least one of which includes an inwardly directed bottom portion.

Abstract: A device for making a muffle, with which dental restoration parts can be produced with the aid of an embedding compound, at least one press blank and a pressing device, the device having a muffle base, a tubular sleeve surrounding the muffle base and at least one muffle insert which is arranged on the muffle base and can be separated from it. At least two cylindrical press-channel forming elements (16, 18, 20) extend parallel to one another and spaced apart from one another from a flat-formed portion of the muffle insert (12), which can be burned out at least with respect to the forming elements, which elements are formed in a closed manner, and in particular with thin walls, at least on one free end face opposite from the flat-formed portion (14).

Abstract: Certain embodiments relate to a method of forming an individualized dental product ready for application including at least one tooth veneer, which is of a ceramic material. The method includes milling a first side of a ceramic substrate, filling up with a support material against the first side of the substrate, and milling the second side of the substrate until the veneer is plate-like and provided with a bevelled region over a distance (s) taken from an edge and 0.3 mm to 3 mm towards a middle portion of the veneer. The veneer thickness varies from 0 to a plate thickness (d*enlargement factor) over the distance (s). The method further includes sintering the dental product and removing the support material. Certain embodiments also relate to a product resulting from the method.

Abstract: A tubular sleeve is configured to grasp a small part, move it, and place it in a correct location in a patient's mouth. The tubular sleeve comprises a picking end; a connection end having a connection end piece configured to connect to a suction system; and an inner part between the picking end and the connection end, the inner part being equipped with a sealing flap configured to cooperate with a control device to move the sealing flap between an open position and a closed position. The sealing flap, in the open position, allows passage of aspirated air flow from the suction system to pick up and suction the small part, and the sealing flap, in the closed position, blocks the aspirated air flow to separate the small part from the tubular sleeve.

Abstract: A hardenable dental composition that includes a polymerizable component and an organogelator.

Abstract: A cluster mill blank includes a framework constructed to cooperate with a blank holder of an existing CAD/CAM system, and a plurality of sub-blanks attached to the framework forming an addressable matrix or cluster blank. CAD/CAM systems including such a framework, as well as associated methods are described.

Abstract: An implant analog for use in dental procedures has a plastic member which has a central bore. A metal insert which has a female thread is located in the central bore. The outer surface of the metal insert has a series of projections which lock the metal insert and the plastic body and prevent relative rotation or axial motion between the metal insert and the plastic member.

Abstract: An appliance fabricated to improve the appearance of a patient's smile includes a plurality of simulated teeth. The interior surfaces of each of the teeth closely fits and conforms to the surface of a patient's real teeth while the outer surfaces of each of the simulated teeth has an ideal surface configuration. The dental appliance provides the patient with the appearance of a perfect set of teeth and an ideal smile without a need to alter the dental structure of the patient's teeth.

Abstract: The present invention is a dental device comprising natural and sustainable materials. These materials are derived from the nut of the tangua palm tree that may be fashioned into devices for human and animals when replacing one or more teeth of the subject.