1206results about "Artificial teeth" patented technology

The present invention provides a method for producing a dental restoration for preferably at least a part of at least one tooth. The method comprises the step of obtaining design data, wherein the design data includes acquired data and preliminary design data of the dental restoration. The method further comprises the step of modifying the preliminary design data before at least one manufacturing step to obtain modified design data and producing the dental restoration based on the modified design data.

The invention relates to the technical field of denture manufacturing, and discloses a high-precision digital complete denture 3D printing method which comprises the following steps: obtaining an initial denture model of a target object; acquiring occlusal point adjustment data; acquiring actual adjustment data; adjusting the initial false tooth model based on the actual adjustment data, and converting the adjusted initial false tooth model into a 3D printing instruction for 3D printing; according to the method, stress distribution during occlusion is simulated through finite element analysis, a three-dimensional occlusion thermodynamic diagram is obtained and input into a constructed CNN network model, occlusion point adjustment data are obtained, adjustment data of effective occlusion contact points are mapped into a solid model, and actual adjustment data are obtained; three-dimensional data of the oral cavity of a patient is obtained through a scanner, digital analysis is conducted in combination with a neural network model, the denture manufacturing precision is improved, manufacturing is conducted in a 3D printing mode, the manufacturing efficiency is high, the patient feels comfortable when wearing the denture and occludes the denture well, and the problem of diet difficulty of the implant patient is solved in time.

The invention relates to the field of false tooth machining equipment, in particular to an intelligent standby cutter switching method and device for false tooth machining equipment, and the method comprises the steps: obtaining state parameters and use parameters of a current cutter in real time; according to the state parameters and the use parameters of the current cutter, whether the condition of replacing the standby cutter is met or not is judged; when the current cutter meets the condition of replacing the standby cutter, analyzing the replacement reason of the current cutter, and obtaining specification parameters of the current cutter; matching a target standby tool according to the specification parameter of the current tool; generating a replacement strategy of the target standby cutter according to the replacement reason of the current cutter; and on the basis of the replacement strategy and the target standby tool, replacing the tool of the false tooth processing equipment, and updating the state parameter and the use parameter of the replaced tool. By accurately analyzing the use state of the tool, it is ensured that the tool is replaced in time when going wrong, machining errors or product defects caused by tool abrasion or other problems are avoided, and therefore the machining precision and the product quality are guaranteed.

The utility model discloses a false tooth with an anti-loosening structure, which comprises a false tooth, and the false tooth is assembled on a gum through the anti-loosening structure; the anti-falling structure comprises a mounting rod, a mounting block and a connecting block, three first planting grooves in threaded connection with the mounting rod are formed in the top of the gum, a clamping cap is mounted at the top end of the mounting rod, a connecting cylinder is mounted in the mounting block, a through hole communicated with the connecting cylinder is formed in the bottom of the mounting block, and the through hole corresponds to the clamping cap in position. A spring is placed in a cavity formed between the outer side of the connecting cylinder and the mounting block, an arc-shaped clamping groove in extrusion contact with the spring is formed in the outer side of the clamping cap, and inserting rods are symmetrically mounted at the top end of the connecting block. The mounting rod and the inserting rod are respectively fixed on the gum and the false tooth of a patient, parts are simple and convenient to replace subsequently, the false tooth is pressed during use, the clamping cap is stressed to extrude the spring, and the spring is clamped on the outer side of the clamping cap, so that the gum and the false tooth of the patient can be quickly fixed, and the false tooth cannot fall off during daily chewing.

The invention provides an implant immediate denture precise manufacturing system based on preoperative planning and three-dimensional registration. An example method includes obtaining first oral data, the first oral data including three-dimensional data of a denture model and three-dimensional data of a marker; acquiring second oral cavity data, wherein the second oral cavity data comprises scanning data of a plurality of bases fixed in the oral cavity and a marker; registering the first scanning data and the second scanning data based on the matching of the three-dimensional data of the marker and the scanning data of the marker; a denture model to be processed is generated based on a result of the registration, the denture model to be processed comprising three-dimensional data of the denture model and positioning information of a plurality of holes, each hole being for accommodating one of the plurality of abutment. According to the embodiment of the invention, the accurate positioning of the false tooth model and the abutment is realized by using a digital technology, the accurate matching of the false tooth and the abutment is ensured, and the comfort and experience of a dental implant patient are improved.

Orthodontic appliances have a temporary flexural modulus that decreases when subjected to environmental conditions such as heat. As the flexural modulus decreases, the appliance becomes more flexible and therefore less initially uncomfortable. As the appliance is worn, it cools, gradually increasing the flexural modulus and applying greater orthodontic forces to the teeth.

Disclosed is a test apparatus for denture processing, including a carrying mechanism provided on a placement surface, a hardness test mechanism, an internal support mechanism, a stop mechanism, a drive mechanism and a transmit mechanism. The internal support mechanism is configured to clamp a to-be-test denture and includes a threaded shaft (2), an internal support member and a main shaft (1). The internal support member is slidably connected to the carrying mechanism along a first direction and is at least partially provided in the carrying mechanism. The threaded shaft (2) is provided with two thread portions with opposite rotation directions, the thread portions and the internal support members are in a one-to-one correspondence, part of the internal support member provided in the carrying mechanism is threaded with the thread portion, and the threaded shaft (2) is connected to the main shaft (1) through a damping bearing (3).

The invention relates to the technical field of implant denture repair of jaw reconstruction patients, and discloses a preparation method and equipment of a soft tissue fixing and forming device and a medium, and the method comprises the following steps: acquiring ct data and scanning data; the method comprises the following steps of: performing fitting on the basis of ct data and scanning data, determining the thickness of surface soft tissue of an alveolar bone or a reconstructed jaw bone, generating a virtual implant according to an implant implanted by a patient, and obtaining the three-dimensional position of each implant on the basis of the virtual implant and implant ct, thereby generating a virtual screw retention abutment according to the thickness of the surface soft tissue of the alveolar bone or the reconstructed jaw bone. Determining an abutment gum penetrating position of the virtual screw retention abutment, and finally constructing a soft tissue fixing and forming device for jaw defect implantation based on the abutment gum penetrating position, the implant three-dimensional position and scanning data. The soft tissue fixing and forming device for jaw defect implantation has enough retention force, is not influenced by lip and cheek movement, is comfortable to wear, is easy to clean and has wider indications.

The invention discloses dental prosthesis manufacturing equipment based on 3D printing, relates to the technical field of dental prosthesis manufacturing, and aims at solving the technical problems that in the dental prosthesis grinding process, a proper grinding tool needs to be frequently found for grinding, the process is troublesome, time is wasted, and the grinding efficiency is reduced. Comprising an output cavity assembly, a cylindrical grinding assembly, a spherical grinding assembly and a conical grinding assembly, the output cavity assembly comprises a transmission bin and a fixed bin, the transmission bin is movably connected with the fixed bin, the cylindrical grinding assembly comprises a first rotating cylinder, one end of the first rotating cylinder is connected with a cylindrical grinding head, and a spherical grinding head is arranged in an inner cavity of the cylindrical grinding head; a conical grinding head is arranged in an inner cavity of the spherical grinding head. The dental prosthesis grinding device has the advantages that grinding equipment of various specifications does not need to be prepared, all-around grinding of the dental prosthesis can be completed only through the dental prosthesis grinding device, convenience is achieved, the grinding time is saved, and the grinding efficiency is improved.

The invention discloses false tooth machining polishing equipment capable of avoiding splashing, and relates to the technical field of false tooth machining, the false tooth machining polishing equipment comprises a base, a fixing frame is fixedly mounted at the top of the base, an electric push rod is fixedly mounted on one side of the top of the fixing frame, and the movable end of the electric push rod penetrates through the fixing frame and is fixedly provided with a movable plate; a fixed frame is arranged on the base, a movable plate is arranged on the fixed frame, a guide rod is fixedly arranged on one side of the top of the movable plate, the guide rod is slidably connected with the fixed frame, the polishing assembly is arranged below the movable plate and comprises a mounting frame and an adjusting assembly, the adjusting assembly is arranged on the top of the base, the fixed assembly is arranged above the base, and the mounting frame is fixedly arranged on one side of the bottom of the movable plate; according to the denture polishing device, in the denture polishing process, the polishing heads with different roughness degrees can be conveniently switched, the time for replacing the polishing heads is saved, rapid switching can be conducted, operation of workers is facilitated, and the working efficiency is improved.

The present invention relates to: a photocurable restoration composition comprising a ceramic composition; and a dental prosthesis using a 3D printer. More specifically, the present invention relates to: a photocurable restoration composition comprising a silane-treated ceramic composition; and a dental prosthesis manufactured using the photocurable restoration composition by using a 3D printer. According to the present invention, it is possible to obtain a dental prosthesis having improved gloss, excellent thermal resistance and hardness, and improved uniformity and reliability.

To provide a calcined body that is processed easier than a conventional calcined body and where differences in hardness between production lots are suppressed.SOLUTION: A calcined body comprises: at least one first transition metal element selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), and silver (Ag); a coloring element of at least one of a lanthanoid rare earth element and a second transition metal element different in kind from the first transition metal element; and zirconia containing a stabilizing element. A content of the first transition metal element is 100 mass.ppm or more, a content of the second transition metal element is less than 100 mass.ppm, and an absolute value of a difference in hardness relative to a hardness of a calcined body obtained from a commercially available powder is 10 HV or less.SELECTED DRAWING: None

The invention relates to the technical field of false tooth engraving and milling machines, and discloses a five-axis linkage false tooth engraving and milling machine which comprises a five-axis linkage false tooth engraving and milling machine body, a main shaft shell is arranged in the five-axis linkage false tooth engraving and milling machine body, and a fixing cover is fixedly arranged in the five-axis linkage false tooth engraving and milling machine body; a flexible movable cover is arranged at the top of the fixed cover, a through hole correspondingly connected with the main shaft shell is formed in the top of the movable cover, a sealing ring is arranged at the joint of the movable cover and the main shaft shell, and a collecting box is installed on the back face of the five-axis linkage false tooth engraving and milling machine body. The fixed cover and the movable cover are cooperatively sealed, the movable cover of the multi-layer folded organ pleat structure can tightly move along with the main shaft shell, a machining area is always highly sealed when equipment runs and the main shaft moves, cooling liquid splashing, metal or ceramic chip scattering and dust overflowing are effectively prevented, and the cleanliness of the working environment is greatly improved.

The utility model discloses an anti-loosening telescopic crown denture, and relates to the field of dentures, the anti-loosening telescopic crown denture comprises a tooth body, a connecting assembly mounted on the tooth body, a clamping assembly clamped on the connecting assembly and a denture mounted on the clamping assembly, the connecting assembly comprises a clamping seat fixedly connected to the tooth body, and a through groove is formed in the outer wall of one side of the clamping seat; and a mounting cavity is formed in the clamping seat, an opening is formed in the inner wall of one side of the mounting cavity, the inner wall of the opening is slidably connected with an L-shaped connecting seat, the inner walls of the two sides of the mounting cavity are rotatably connected with the same two-way screw rod, and the outer wall of the two-way screw rod is in threaded connection with two symmetrically-arranged threaded sleeves. The connecting assembly is arranged on the tooth body, the clamping assembly is arranged on the false tooth, and the clamping assembly is matched with the connecting assembly, so that the false tooth is conveniently fixed, meanwhile, an adjustable L-shaped connecting seat in the connecting assembly is convenient for tensioning a clamping seat, and the problem of loosening of the false tooth is effectively avoided.

The embodiment of the invention is suitable for the technical field of dentistry and 3D printing, and provides a method and system for manufacturing a dental object, the method comprises the following steps: obtaining a dental model, the dental model comprising at least one abutment and a repair part associated with a dental prosthesis model; establishing a stent model, wherein the stent model is configured to be mounted on an abutment tooth; a base model is established, the base model comprises a first part and a second part, the support model is clamped between the first part and the second part, and the first part of the base model is aligned with the repair part of the dental model; establishing a tooth prosthesis model, wherein the tooth prosthesis model is aligned with the second part of the denture model; manufacturing a base plate based on the first part and the second part of the base plate model, and manufacturing a stent based on the stent model; the base and the stent are connected to obtain a dental object. By adopting the method, the dental object can be manufactured in a digital mode, and the manufacturing efficiency and accuracy of the dental object are improved.

A system can be configured to record a position and orientation of a dental component. The system can include a coping and a replica. The coping can include an anti / rotational feature that is configured to mate with an anti-rotational feature of a dental component. The coping can also include an orientation feature that is configured to convey the orientation of the dental component. The replica can include a first anti-rotational feature that corresponds to the anti-rotational feature of the dental component. The replica can also include a second anti-rotational feature that does not correspond to the anti-rotational feature of the dental component.

To provide a slurry that can be sintered at low temperatures and in a short time to obtain a densified sintered body.SOLUTION: The slurry contains zirconia powder, glass powder, and polymerizable monomer.SELECTED DRAWING: None

The present invention provides a method for manufacturing a dental prosthesis in which defective baking of a porcelain material is suppressed by using a zirconia composite sintered body that contains Nb2O5 and / or Ta2O5. The present invention relates to a method for manufacturing a dental prosthesis, the method comprising a step for performing a heat treatment or a polishing treatment as a pretreatment on a zirconia composite sintered body that contains Nb2O5 and / or Ta2O5, and a step for building up a porcelain material on the pretreated zirconia composite sintered body and performing firing.

The invention relates to an artificial intelligence technology-based digital form false tooth restoration generation method, which comprises the following steps of: performing 3D scanning on the oral cavity of a patient to obtain a three-dimensional digital impression of upper and lower jaw teeth, appointing the position of a preparation body, performing local cutting by taking the preparation body as a center, and obtaining a three-dimensional digital impression of the upper and lower jaw teeth; the cut area comprises a preparation body, adjacent teeth and three-dimensional impression information of jaw teeth; inputting the cut impression information into a deep neural network model to generate a restoration digital form matched with the preparation body; in the model training process, impression information of a cut part is used as model input, and a three-dimensional digital form of a repaired false tooth prosthesis is used as a learning target; and measuring the difference between the output of the network model and impression information by defining an energy function. Compared with the prior art, the method has the advantages that the digital denture prosthesis with highly accurate model natural tooth morphological characteristics can be designed and produced, and the efficiency and the accuracy are improved.

The present invention provides a zirconia composite sintered body which has suitable strength for dental use, which has excellent mechanical workability in a sintered body state, and which has excellent aesthetic properties. The present invention relates to a zirconia composite sintered body comprising: zirconia; a stabilizer which is capable of suppressing a phase transition of the zirconia; and Nb2O5 and / or Ta2O5, said zirconia composite sintered body comprising a plurality of layers which differ in terms of the content of at least one component from among the stabilizer, the Nb2O5, and the Ta2O5, with respect to the total amount, in moles, of the zirconia, the stabilizer, the Nb2O5 and the Ta2O5.

The present invention provides: a zirconia composite sintered body that can be machined and exhibits exceptional adhesiveness without sandblasting being performed after machining; and a dental preservation repair kit including the zirconia composite sintered body. The present invention relates to a dental zirconia composite sintered body containing monoclinic zirconia, the abundance ratio fm of monoclinic systems represented by formula (1) being higher than 10% and not higher than 60%.　Formula (1): fm = I28 / (I28 + I30) × 100 (In the formula, fm represents the abundance ratio (%) of monoclinic systems, I28 represents the area intensity of a peak around 2θ = 28° where a monoclinic main peak appears in XRD measurement, and I30 represents the area intensity of a peak around 2θ = 30° where a tetragonal or cubic main peak appears in XRD measurement).

The invention provides a rapid sintering method of zirconia ceramic for dentistry and zirconia ceramic, the rapid sintering method of zirconia ceramic for dentistry comprises the following steps: obtaining a pre-sintered body prepared from zirconia powder with stable yttrium oxide, and obtaining a standard active sintering temperature of the zirconia powder; the pre-sintered body is subjected to final sintering in a preset final sintering stage, the zirconia ceramic is obtained, the preset highest sintering temperature in the preset final sintering stage is higher than the standard active sintering temperature, and the difference value between the preset highest sintering temperature and the standard active sintering temperature ranges from 10 DEG C to 60 DEG C. According to the embodiment of the invention, the preset highest sintering temperature in the preset final sintering stage is set to exceed the standard active sintering temperature by 10-60 DEG C, so that the highest sintering temperature of the final sintering process is improved, the final sintering time of the zirconia ceramic is shortened, the production efficiency of the zirconia ceramic product is improved, and the production cost is reduced. And meanwhile, the material can obtain excellent mechanical properties and transparency within an extremely short time.

The invention relates to a method and a system for producing a dental object. The method comprises the following steps: acquiring three-dimensional digital models of a plurality of dental objects, and determining a plurality of estimated weights based on the volume of each dental object and the density of a material associated with each dental object; -producing a dental object made of said material; -measuring the weight of the manufactured dental object; and-determining a difference between the measured weight and each of a plurality of estimated weights, and in response to the difference being within a predetermined range, at least one target cue device of a plurality of cue devices issuing a cue, each of the plurality of cue devices being associated with at least one storage device, the storage device is configured to store a dental object. The technical problem that the sorting efficiency of produced objects is low is solved.

Methods and kits of materials and supplies for restoring teeth by an injection molding process and / or mold overlays in situ in a patient's mouth so as to correct the imperfect teeth of the patient's dentition. The imperfect teeth are corrected by applying restoration materials using a mold of a corrected model of the patients dentition placed over the imperfect teeth. Adjacent teeth may be covered with a polymer release material prior to injection molding of teeth to be corrected, such that the teeth to be corrected have at least one tooth between them draped with the polymer release material to provide a space adjacent to each of the corrected teeth. The corrected teeth are then covered with the polymer release material in a second round of treatment and restoration material is applied to one or more previously covered teeth to provide a first layer which simulates the dentin layer of teeth. Thereafter a simulated enamel layer is applied over the dentin layer using one or more alternating molds and yet another simulated incisal layer is applied over the enamel layer using one or more alternating molds employing the techniques described.

The invention relates to the technical field of complete dentures, and discloses a CAD / CAM (computer-aided design / computer-aided manufacturing) fixed structure rod clamp complete denture and a preparation method thereof. Obtaining an oral cavity three-dimensional model of the user based on optical measurement; preparing an impression for the user based on a preset material; obtaining a three-dimensional digital model of the impression based on scanning equipment, comparing the three-dimensional digital model with the oral cavity three-dimensional model to obtain a fine calibration model, determining the setting position of the fixed structure rod clamp in the fixed structure rod clamp complete denture by adopting CAD according to the fine calibration model, and obtaining scheme data; the scheme is transmitted to a numerical control machine tool, a fixed structure rod clamp is manufactured based on CAM, the fixed structure rod clamp and a base plate are assembled, and the fixed structure rod clamp complete denture is obtained. The arrangement position of the fixing structure rod clamp is optimized by adopting CAD according to the precise calibration model, so that the fixing structure rod clamp better conforms to the oral cavity anatomical structure of a patient, and the retention force and the comfort degree of the false tooth are improved.

Disclosed are an artificial dental crown and a method for manufacturing the same, which can provide a mechanical bonding force in the process of bonding an adhesive to an inner face. The disclosed artificial dental crown may comprise: a molded body which is inserted into and engaged with a prepared tooth and in which a coupling groove into which the prepared tooth is inserted is formed; and a plurality of pattern parts which are introduced and formed on the inner surface of the molded body at a certain depth in an inclined manner so as to be capable of accommodating an adhesive for bonding the molded body to the prepared teeth.

The invention relates to the technical field of bionic teeth, in particular to a method for 3D printing of a gradient bionic tooth structure based on a composite ceramic repair material, and the method comprises the following steps: S1, adopting lithium aluminum silicate series biological ceramic as a base material, and carrying out plasma ball milling treatment to obtain uniform powder; preparing slurry from the powder and polyethylene glycol diacrylate resin containing 3wt% of a photoinitiator according to a powder-water ratio of 42%-46%; s2, performing three-stage treatment on the slurry by using a vacuum defoaming unit; s3, constructing a gradient stress distribution model based on CT scanning data, and dividing an enamel layer, a dentin layer and a dental pulp cavity transition layer; s4, performing lamination forming on the slurry at the speed of 50 + / -5mm / s through a piezoelectric microdroplet injection system; and S5, carrying out sintering molding on the printed bionic tooth body structure by adopting a gradient sintering process. The problems that an interface between a restoration body and surrounding tissues is unstable and inflammatory reaction and rejection reaction easily occur due to the fact that a traditional restoration material is often difficult to accurately simulate the gradient structure of teeth are solved.

There is provided a layered body that has gradations in translucency and color allowing the layered body to give an impression similar to that of natural teeth and with which the chipping of the surface layer (layer closer to the incisal edge of the dental restoration) can be reduced.The layered body comprises a surface layer containing zirconia containing at least one stabilizing element and a composition-gradient layer composed of two or more unit layers. The unit layers each contain at least one coloring element and zirconia containing at least one stabilizing element, and the composition-gradient layer is constructed as a result of the unit layers being stacked in such a manner that the amount of the stabilizing element in the zirconia containing at least one stabilizing element contained in the composition-gradient layer remains unchanged or decreases from the surface layer toward the surface of the layered body opposite the surface layer. The amount of the stabilizing element in the zirconia containing at least one stabilizing element contained in the surface layer is smaller than the amount of the stabilizing element in the zirconia containing at least one stabilizing element contained in a first composition-gradient layer, which is one of the unit layers constituting the composition-gradient layer and is adjacent to the surface layer.

To disclose an artificial crown having a structure of providing a mechanical bonding force in a process of attaching cement to an inner surface, and a manufacturing method of the artificial crown.SOLUTION: An artificial crown according to the present invention includes: a molded body 10 inserted and attached to an abutment tooth and having a connection groove 10a to be inserted to the abutment tooth formed therein; and a plurality of pattern parts 20 formed so as to be inclined by a predetermined depth and drawn in an inner surface of the molded body so as to accommodate an adhesive for joining the molded body to the abutment tooth.SELECTED DRAWING: Figure 2

The invention relates to a sintered molding with a color gradient for use in the manufacture of dental restorations, obtainable by sintering a compression-molded element comprising five or more different ceramic powder layers, each powder layer comprising at least two different base powders and each base powder containing at least 80 wt. % ZrO2, each weight amount being relative to the total weight of the base powder.