Abstract: A dental device is improved in its ability to produce hydroxyl apatite by having a layer of mineral trioxide aggregate (MTA) deposited thereon. A tile of MTA is prepared, heat treated and sintered to produce a micronized tile of MTA that can then be deposited by physical vapor depositions, hot isostatic pressing, molding or other conventional technique.

Abstract: Monochromatic dental shaped body, which has an opacity of from 70 to 78%, and a process for its production.

Abstract: A photocurable composition for manufacturing a dental prosthesis by stereolithography, including: a photopolymerization initiator; and a (meth)acrylic monomer component including an acrylic monomer (X) having no aromatic rings and having a ring structure other than an aromatic ring and two or more acryloyloxy groups in one molecule and having an Mw of from 200 to 800, and at least one of a (meth)acrylic monomer (A) having one or more ether bonds and two (meth)acryloyloxy groups in one molecule and having a defined Mw, a (meth)acrylic monomer (B) having a ring structure other than an aromatic ring and one (meth)acryloyloxy group in one molecule and having a defined Mw, a (meth)acrylic monomer (C) having a hydrocarbon skeleton and two (meth)acryloyloxy groups in one molecule and having a defined Mw, and a (meth)acrylic monomer (D) having one or more aromatic rings and one (meth)acryloyloxy group in one molecule and having a Mw.

Abstract: The examples of the present application disclose a method for preparing a dental composite resin material and articles prepared therefrom, wherein the method comprises: (1) weighing in each of raw materials, including ethylenically unsaturated monomer, reinforcing fiber, filler, initiator, polymerization inhibitor and colorant; (2) mixing the weighed raw materials except reinforcing fiber, obtaining a composite resin monomer precursor; (3) impregnating the weighed reinforcing fiber into the composite resin monomer precursor for 1-5 hours, preferably 2-3 hours, at an impregnation negative pressure of less than or equal to 0.1 MPa, obtaining a composite resin monomer precursor-immersed reinforcing fiber; and (4) subjecting the composite resin monomer precursor-immersed reinforcing fiber to a solidification treatment, obtaining the dental composite resin material.

Abstract: During an intraoral scan session, a processing device receives a plurality of intraoral images of a dental site. The processing device determines that a historical template of the dental site is existent and registers a first intraoral image of the plurality of intraoral images to the historical template at a first region of the dental site depicted in the historical template. The processing device may register one or more remaining intraoral images of the plurality of intraoral images to the historical template at a second region of the dental site depicted in the historical template. The first region may be separated from the second region.

Abstract: A powder-liquid dental curable material kit composed of (A) a liquid material and (B) a powder material, wherein the liquid material (A) contains (a1) a radically polymerizable (meth)acrylic monomer, (a2) an organic halogen compound and (a3) a radical chain transfer agent; the powder material (B) contains (b1) non-crosslinked resin particles, (b2) a pyrimidinetrione compound and (b3) an organic metal compound; and (Z) a peroxide is blended in at least one of the liquid material (A) and the powder material (B). This curable material kit is capable of reducing the heat generation during the curing of a curable material which is a mixture of the liquid material (A) and the powder material (B) and is not susceptible to the excessive prolongation of the curing time even when the curable material is cured by a brush-on technique, thereby ensuring an appropriate curing time for both of a brush-on technique and a kneading technique.

Abstract: A functional implant includes: a fixture; an abutment coupled to the upper portion of the fixture using a bolt; and a crown coupled to the abutment coupled to the fixture, the crown having a crown body concave on top thereof, an abutment insertion recess formed inside the crown body to be open on the underside of the crown body, and a coupling guide portion formed on an inner peripheral wall of the abutment insertion recess and having a scratch surface formed on the surface of the inner peripheral wall, a silica layer bonded to the scratch surface, a zirconia primer layer coated onto the silica layer, and a resin bonded to the zirconia primer layer. The crown is detachably coupled to the abutment through press-fitting, thereby allowing easy detachment and smooth repair and correction. The crown is made using milling, thus reducing errors to ensure good fitness and passivity.

Abstract: A dental material, a dental mixture or a dental multi-component system for making the material of or core for a temporary superstructure for a dental implant by polymerization hardening, consisting of one, two or a plurality of polymerizable (meth)acrylates, and optionally further constituents. The dental material, the dental mixture or the multi-component system is hardenable to a product, and the maximum compressive modulus is 420 MPa, and is used in therapeutic treatments for accelerating the osseointegration of dental implants, in particular according to the method of progressive bone loading. Also described are temporary superstructures and cores themselves, and a temporary dental prosthesis, a kit for making a plurality of temporary superstructures for a dental implant or a plurality of cores for temporary superstructures for a dental implant. A corresponding method of preparing a temporary superstructure or a core is also described.

Abstract: A unitary dental device constructed from a suitable thermoplastic or thermosetting material allowing the dental device to be heat molded by a dental practitioner sitting chair side to a patient. The dental device includes a single-piece, shell-like analog having the appearance of contoured, individual teeth. The dental device may also include a pair of posterior tooth extensions in order to create a custom buccal corridor specifically adapted for the patient. A connection bridge uniformly joins the proximal contact areas intermediate of adjacent teeth to form the unitary shell-like analog. The dental device may be temporarily affixed in the patient's mouth to allow both the patient and the dental practitioner to preview chair side the look of a final smile design with a fully-fabricated dental prosthesis. Once the patient and dentist are satisfied with the particular tooth selection and characterization, the dental prosthesis can be fabricated from the dental device.

Abstract: A process for preparing a prosthetic element comprising a glass-ceramic body. including the steps of a) providing a basic body comprising an amorphous glass phase and containing the components of the glass-ceramic body to be prepared, and b) transferring energy to the basic body to induce conversion of a starting phase of the material of the basic body into at least one crystalline phase in a confined region. According to the invention, energy is transferred to the confined region of the basic body by laser irradiating said region with a laser beam having a wavelength of at least 500 nm.

Abstract: Colorless dental compositions for restoring the enamel layer of a tooth are disclosed. The colorless enamel compositions are combined with pigmented dentin compositions to provide a true color match and natural esthetics. Methods that utilize the compositions in placement/build-up techniques in direct restorations are also disclosed.

Abstract: The present invention provides a functionally graded glass/ceramic/glass sandwich system for use in damage resistant, ceramic and orthopedic prosthesis. The functionally graded glass/substrate/glass composite structure comprises an outer residual glass layer, a graded glass-ceramic layer, and a dense interior ceramic. The functionally graded glass/substrate/glass composite structure may further comprise a veneer on an exterior surface. The present invention also provides a method for preparing a functionally graded glass/ceramic/glass sandwich system. A powdered glass-ceramic composition is applied to the accessible surfaces of a presintered zirconia substrate to thereby substantially cover the substrate surfaces. The glass of the composition has a CTE similar to that of the substrate material. The glass-ceramic composition is infiltrated into and densifies the substrate by heating the assembly to at least the sintering temperature of the substrate.

Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.

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: A set of elements is described for use in the production of a dental prosthesis (20), in particular of a crown, a bridge, an inlay or an onlay, comprising: a framework (3) and one or more model parts (5) for defining parts of the outer contour of a veneer (15) for the framework (3), wherein the model part or parts (5) can be mounted on the framework (3) in such a way that, at one and the same time, (i) a gap (7) remains between the model part or parts (5) and the framework (3) and (ii) the model part or parts (5) define parts [lacuna] the outer contour. Corresponding methods and systems are also described.

Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.

Abstract: A method of forming a temporary tooth by fusing a plurality of polymer pellets. The plurality of pellets are fused and molded into the shape of a tooth. Additionally, the formed tooth shape comprises of a adapter shape that allows the formed tooth to be secured to the adjacent teeth of the space of the missing tooth.

Abstract: The invention relates to glass ceramics based on the lithium metasilicate system (Li2O SiO2 (Li2SiO3)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high- strength, highly translucent and chemically stable glass ceramic.

Abstract: Provided are dental articles, and methods of making articles, having an aesthetic inorganic coating based on zirconia at least partially stabilized with yttrium oxide, calcium oxide, cerium oxide, or magnesium oxide. Stabilized zirconia coatings were found to provide a smooth, low friction surface having high abrasion resistance. These coatings are particularly applicable to orthodontic appliances. While virgin stabilized zirconia coatings can often have an undesirable color cast, it was discovered that this color cast can be substantially eliminated by heat treating the coated appliance in an oxygenated environment. The combination of depositing a stabilized zirconia coating and subsequently heat treating to decolorize the coating provides a surprisingly robust, stable, low-friction coating that is also aesthetic.

Abstract: The invention relates to a dental article comprising two sections, section A and section B, section A having an upper and a lower surface portion, section A comprising zirconia in an amount of at least about 80 mol %, a stabilizer and a component X comprising Dy or Sm or Eu or mixtures thereof, section B comprising a glass, glass ceramic or composite material, section B being located above the upper surface portion of section A. The invention also relates to a process for producing such an article, a kit of parts and the use of blanks for producing such an article.

Abstract: The present invention includes a novel shapeable material or resin, specifically for dental use. It is an improvement over conventional dental resins because it is strong, safe, does not encourage the propagation of bacteria and contains no bisphenol A (BPA). Also, it is the preferred resiliency for use in the oral cavity.

Abstract: A glass thread adapted for reinforcing polymeric materials includes a plurality of filaments having a chemical composition that includes the following constituents within the limits defined below in weight percent: SiO2 40 to 60 Al2O3 0 to 5 CaO 1 to 15 MgO 1 to 15 BaO 2 to 15 SrO 12 to 20 ZnO 0.5 to 10 Na2O + K2O + Li2O 0 to 5 TiO2 3 to 20 Prosthetic members including such threads are also described.

Abstract: This invention provides a dental appliance for concealing a missing tooth that is easy and inexpensive to fabricate and does not require the patient to spend a lot of time in the dentist's chair or make multiple visits to the dentist's office to be fitted for the appliance. The device of the present invention is made of a dental restorative material and a thermoplastic material. The thermoplastic material is clear in color, which makes it appear almost non-existent, flexible, and one solid piece. The restorative material in the dental appliance is similar to tooth structure because it is capable of expansion and contraction.

Abstract: A method for machining a dental prosthesis that reduces the likelihood of forming tool failure includes machining a workpiece to form a top surface and a side surface of the dental prosthesis, machining a connector between a proximal end of the dental prosthesis and a proximal end of the workpiece, and machining a bottom surface of the dental prosthesis with a spiral tool path.

Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.

Abstract: Embodiments described herein are related to fillers that are placed within an extraction site in need of bone augmentation and preservation. The fillers encourage sufficient new bone growth in order that normal jaw bone deterioration following tooth removal is prevented. The fillers create, arrange, and assemble an ideal growth environment for new bone growth to rapidly grow and preserve the original contours of an individual's jaw bone. Further embodiments described herein are related to dental implants that are arranged to provide a scaffold upon which a damaged or missing dental papilla may regrow. The dental implants may include a micro-pattern to facilitate directional cell growth.

Abstract: Process for producing an inorganic-inorganic composite material, in which an open-pore, crystalline oxide ceramic shaped part is produced from an oxide ceramic powder or a powder of an oxide ceramic mixture after shape-imparting processing and presintering, an infiltration substance is applied to this shaped part in vacuo and at room temperature, and the oxide ceramic is sintered in a densifying manner under an air atmosphere and at ambient pressure to form an inorganic-inorganic composite material.

Abstract: An integrated dental porcelain system for making dental prostheses and restorations is provided. The system includes three universal major components: a) opaque porcelain composition; b) pressable dentin ingot; and c) veneering porcelain composition that can be used interchangeably for making restorations. Techniques for making the prostheses and restorations include porcelain fused-to-metal (PFM), press-to-metal (PTM), and either pressed and/or machined all-ceramic methods. The system uses both a hand-layering of veneering porcelain (PFM technique) and a hot-pressing process (PTM and all-ceramic technique) to fabricate the prostheses and restorations.

Abstract: A semi-worked piece of composite material for producing artefacts/devices for dental and/or odontoiatric use such as posts and/or stumps and/or dental crowns for example, comprises a polymeric matrix and a multiplicity of mechanically resistant fibres nested in the polymeric matrix; in this semi-worked piece the resistant fibres are arranged in a predetermined number of reinforcing layers that are substantially planar and are disposed in mutually overlapped relationship.

Abstract: A method for producing a tooth stump structure that is to be anchored in a root canal comprises the following steps: flexible needles are introduced one after the other into a recess in the form of a root canal or into an exposed cavity; the length of the protruding ends of the needles is adjusted to the form of a core of the stump structure, the core is then modelled from a semi-liquid, polymerizable composition and subsequently hardened; and an outer jacket of a crown is applied to the core. The tooth stump structure produced by said method is formed by a structural core made of a hardened composition, wherein individual flexible needles are anchored in said core and protrude therefrom, a cross section of the needles being circular, elliptical or polygonal and their diameter ranging from 0.1 to 0.8 mm. The protruding parts of the needles occupy a space that corresponds essentially to the space of the root canal or the cavity.

Abstract: A process for fabricating a tooth restoration includes mixing a high fusing ceramic material, a low fusing ceramic material and a base material into a viscous liquid. The viscous liquid is applied to a tooth restoration base. Thereafter, the low fusing ceramic material is melted to adhere the high fusing ceramic material to the base. An overlay is then applied the high fusing ceramic material.

Abstract: The present invention includes a novel shapeable material or resin, specifically for dental use. It is an improvement over conventional dental resins because it is strong, safe, does not encourage the propagation of bacteria and contains no bisphenol A (BPA). Also, it is the preferred resiliency for use in the oral cavity.

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: The present invention provides a functionally graded glass/ceramic/glass sandwich system especially useful in damage resistant, ceramic dental and orthopedic prosthesis. The functionally graded glass/substrate/glass composite structure comprises an outer (aesthetic) residual glass layer, a graded glass-ceramic layer, and a dense interior ceramic. The functionally graded glass/substrate/glass composite structure may further comprise a veneer on an exterior surface. The present invention also provides a method for preparing a functionally graded glass/ceramic/glass sandwich system. A powdered glass-ceramic composition or a glass tape is applied to the accessible surfaces of a dense alumina substrate to thereby substantially cover the substrate surfaces. The glass of the composition has a CTE similar to that of the substrate material. The glass-ceramic composition is infiltrated into the dense substrate by heating the assembly to temperatures 50-700° C. below the sintering temperature of the substrate.

Abstract: The invention relates to a dental composition comprising a) a hardenable compound (A1), b) a filler (B1), c) an initiator (C1) being able to initiate curing of compound (A1), compound (A1) having the structure A-(-S1-U-S2-MA)n, with A being a connector element, S1 being a spacergroup comprised of units connected with each other and comprising at least 4 units, S2 being a spacergroup comprised of units connected with each other and comprising at least 4 units, U being an urethane, an amide or an urea group connecting spacergroups S1 and S2, MA being an acrylate or methacrylate group and n being 3 to 6. The invention also relates to a process of producing this dental composition and using the dental composition e.g. as a temporary and/or long term crown and bridge material.

Abstract: Colorless dental compositions for restoring the enamel layer of a tooth are disclosed. The colorless enamel compositions are combined with pigmented dentin compositions to provide a true color match and natural esthetics. Methods that utilize the compositions in placement/build-up techniques in direct restorations are also disclosed.

Abstract: A method for creating shaded zirconium-oxide ceramics and a composition created by that method. Shaded yttrium tetragonal zirconium-oxide polycrystals are mixed to achieve a spectrum of final shaded ceramics matching the shades of human teeth. Ceramic material can be in raw form or can be milled and sintered as final product. A method for creating dental prosthetics and the dental prosthetics created by that method.

Abstract: Dental prosthesis, systems, and methods of forming and using a dental prosthesis, are provided. An example of a dental prosthesis includes a first manufactured portion shaped to substantially conform to the three-dimensional surface of a root of a tooth to be replaced and a second manufactured portion shaped to substantially conform to the three-dimensional surface of a crown of the tooth. Furthermore, customized manufactured splints to position and fixate a tooth-shaped prosthesis, are provided. Furthermore, a CAD/CAM based methods of and a systems for manufacturing a customized dental prosthesis are provided. The tooth can be scanned to determine its three-dimensional shape and substantially copied using an imaging system in-vitro like a 3D scanner or in-vivo like a cone beam CT system and CNC machinery. Biocompatible material that is suitable to be integrated into the extraction socket and adopted by existing tissue forming the socket can be manufactured or engineered.

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: The present invention is related to the use of stem cells of an animal species for obtainment of biological tooth substitute, in whole or in parts, to be implanted in organism of the same animal strain, wherein said stem cells can be adult cells. The present invention still aims to develop a method of tissue engineering for culturing cells capable to form dental tissue for production of a tooth biological substitute. The said dental tissue can used for the treatment of people suffering from loss, fail or lack of these tissues, and also for cosmetic use of those tissues for a morphological modifying on a patient dentition, for example, the patient may desire to, or need to, have a bigger or smaller dentition for any aesthetic reason.

Abstract: A pressable dental ceramic comprising a mixture of glass and glass-ceramic frits. A refractory filler is also combined with the frits. The dental ceramic contains an amount of leucite less than about 35 percent by weight. Other additives may be included such as pigments, opacifying agents and fluorescing agents. The dental ceramic comprises a cellular-like microstructure comprised of glassy regions surrounded by clusters of leucite crystals distributed around those glassy regions forming a cellular three-dimensional network.

Abstract: A dental mill blank comprising a resin and a filler, wherein the blank is fabricated such that it passes a Thermal Shock Test. The mill blank is substantially free of cracks and discontinuities. Further, the blank may have superior cuttability and hardness.

Abstract: A dental construct according to the present invention includes a glass-ceramic coping having a resin composite material in the form of a veneer bonded or otherwise affixed to at least a portion of the coping. A method according to the invention of preparing the dental construct includes the step of bonding or otherwise affixing a resin composite material in the form of a veneer to at least a portion of a glass-ceramic substrate coping.

Abstract: A method of making an artificial tooth for a denture and the tooth so made, the method including making a form tooth of a plastic tooth or an existing denture tooth, using the form tooth to make a mold form, placing a thin layer (1 mm) of polycarbonate incisal material in the bottom of the mold form and conforming the material to the mold form, subjecting the layer of incisal and body material to a vacuum and then to a curing light in an oxygen-free atmosphere, adding additional layers of approximately 2 mm of the incisal and body material and exposing each layer to a vacuum and light curing step as described above until the mold form is full. The tooth is then removed from the mold form and again exposed to a vacuum and light curing step.

Abstract: By irradiating 60Co ? ray to chitin/chitosan, chitin/chitosan having high molecular weight is separated or decomposed into low molecular weight chitin/chitosan. A method of producing an osteoconduction substance comprises the steps of irradiating 60Co ? ray to chitin/chitosan to produce low molecular weight chitin/chitosan; preparing chitosan sol by dissolving low molecular weight chitin/chitosan in an acidic aqueous solution to obtain a chitosan acidic aqueous solution and kneading the chitosan acidic aqueous solution and apatite powder; and neutralizing the chitosan sol by the use of a neutralizing agent.

Abstract: The invention relates to urethane prepolymers, obtainable by reaction of: (A) 15 to 85 wt.-% of one or more ?,?-terminated poly(meth)acrylate diols, (B) 0 to 30 wt.-% of one or more radically curable, polyhydroxy-functional compounds, (C) 14 to 60 wt.-% of one or more polyisocyanates, (D) 1 to 40 wt.-% of a monofunctional compound, reactive vis-à-vis isocyanate groups, which also contains one or more radically curable grouping, as well as their use.

Abstract: A dental molding, in particular an artificial tooth, having an outer incisal layer and a dentin layer beneath that, characterized in that a layer of fluorescent material is provided between the dentin layer and the incisal layer. A method of producing the dental molding, and a method of using the dental molding to provide a patient with a more aesthetic appearance are also disclosed.

Abstract: Disclosed is a method of horizontally structured automated CAD/CAM manufacturing process, comprising: selecting a blank for machining into an actual part; establishing a coordinate system; creating a master process model comprising: virtual blank corresponding to the blank; a manufacturing feature; virtual machining of the manufacturing feature into the virtual blank, the manufacturing feature exhibiting an associative relationship with the coordinate system; and generating machining instructions to create the actual part by machining the manufacturing feature into the blank; capturing manufacturing process rules in a spread sheet; and the spread sheet exhibiting an associative relationship with the master process model. Also disclosed is a manufactured part created by a method of horizontally structured automated CAD/CAM manufacturing process.

Abstract: Particulate composite material with an average particle size of 20 to 50 ?m and a maximum content of particles with a size of <10 ?m of 10 wt.-% and its use for the preparation of dental materials.

Abstract: The invention encompasses a glass-ceramic comprising a continuous glass phase and a crystal phase comprising tetragonal leucite, wherein the glass-ceramic has a crack-free glass phase and a crystal phase comprising leucite crystals distributed essentially homogeneously in the glass phase. The crystal phase has a particle size distribution made of from about 5% to about 70% of a first group of leucite crystals having particle sizes of <1 ?m and from about 30% to about 95% of a second group of leucite crystals having particle sizes of ?1 ?m. The proportion of Li2O in the glass-ceramic is preferably below 0.5% by weight. It is preferred that not only the glass phase but also the crystal phase is essentially free of cracks. The corresponding glass-ceramics are particularly suitable for use in the dental sector, in particular as facing ceramics.