38 results about "Dental Base" patented technology

Systems and methods are disclosed to produce a dental base having sockets for receiving physical tooth models. The method includes receiving positional information of the sockets on the base, determining a relative movement between a laser and a base plate; emitting a laser beam from the laser to the base plate, and producing a socket in the base plate by the emitted laser beam to form a dental base configured to receive the physical tooth models.

A method for treating a subject's teeth. A target configuration for the subject's teeth is determined. Receiving features are produced on a dental base in response to the target configuration, the receiving features being configured to receive physical tooth models. The physical tooth models are assembled on the dental base to form a physical arch model. A dental aligner is produced using the physical arch model to move the subject's teeth to the target configuration.

The invention discloses a polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and a preparation method and an application thereof. The preparation method comprises the following steps of: suspending and polymerizing 100 parts by weight of methyl methacrylate monomers and 1-10 parts by weight of silicon nanotubes, uniformly mixing a product with a thermal coagulation dental base acrylic resin liquid; and heating and curing. In the invention, a PMMA / SNTs nano-composite material is prepared by adopting an in-situ suspension polymerization method, SNTs are taken as fillers, the performance of the PMMA is improved by performing SNTs in-situ filling, so that bending strength and tensile strength are improved greatly in comparison to pure PMMA resin, problems existing on the aspect of mechanical strength, in particular on the aspect of tensile strength of the PMMA denture base material are solved, and an oral rehabilitation material with excellent performance is obtained.

The present invention relates to the field of a denture, and especially relates to a detachable denture and a preparation method thereof. The denture comprises a mounting unit, also includes an upper dental crown, a lower dental crown, an upper dental base and a lower dental base which are formed by 3D printing, the upper dental crown and the lower dental crown are filled with filling bodies, the mounting unit comprises an implant abutment and an abutment yoke body, the implant abutment is fixed in the upper dental crown and the lower dental crown, the abutment yoke body is fixed in the dental base and the lower dental base, the implant abutment and the abutment yoke body are in magnetic connection, and connection gaps between the upper dental crown and the upper dental base and between the lower dental crown and the lower dental base are filled with paste. The upper dental crown and the lower dental crown are overall structures comprising a plurality of dental crowns, the upper dental crown and the lower dental crown are printed directly by 3D printing technology after tooth-arrangement design by use of a computer, the integrity is good, the upper dental crown and the lower dental crown are not easy to deform and misplace, by the tooth-arrangement design by use of the computer, the tooth-arrangement level of a technician can be improved maximally, a lot of work steps are saved, and cost is saved for patients.

The invention discloses a 2-Acryloylamino-2-methyl-1-propanesulfonic acid (AMPS)-methyl methacrylate (MMA)-halloysite copolymerized denture base material and preparation method thereof. According to the invention, the charge environment of the polymer substrate of the first monomer MMA is regulated and controlled through the second monomer AMPS, the two monomers are copolymerized through the suspension polymerization method, HNTs is added and compounded with the copolymerization product, and after the copolymerization product is mixed with thermosetting type dental base acrylic resin liquid, the mixture is heated and cured. According to the invention, the MMA is used as a base material, and the in situ suspension polymerization method is adopted to prepare a nanocomposite to regulate and control the charge environment of the substrate, and the halloysite filler is added for polymerization, so that relatively pure PMMA resin is obtained, the bending strength and tensile strength are improved to a great extent, the dispersity of halloysite in the substrate is successfully improved, and the problem about the mechanical strength, particularly the bending strength of the PMMA denture base material, is solved.

The invention discloses an antibacterial dental prosthetic material and a preparation method thereof. The antibacterial dental prosthetic material is obtained by injecting the raw materials in a specific mold for curing and forming after even mixing of 25 percent to 94 percent (by weight) of epoxy resin, 0.5 percent to 40 percent (by weight) of polyamine and guanidine oligomer, 5 percent to 65 percent (by weight) of curing agent, the amount which is equivalent to 10 to 50 percent of the total weight of the three matters of filler and the amount which is equivalent to 0 to 20 percent of the weight of the epoxy resin of epoxy thinner. The dental prosthetic material prepared by the ingredients and the method of the invention is safe for the human body, does not damage the oral bacteria groupand has the long-term antibacterial property; the antibacterial rate of the invention on staphylococcus aureus is more than 98 percent, and the antibacterial rate on Escherichia coli is more than 98 percent. The invention can be used as dental base material, adhesive, filling material, closure agent and other dental materials.

The invention relates to a method for making a dental base semi-finished product (6), comprising the following steps: 1) collecting and digitizing the oral condition of a patient (1), generating a digital three-dimensional oral model of the patient (1), or providing the patient (1) 2) performing a first calculation in which a digital three-dimensional first model (A) of the denture base is calculated, wherein the oral model is based on the oral condition in the first calculation; 3) performing a second calculation in which a digital three-dimensional second model (B) of the base semi-finished product is calculated from the first model (A) of the denture base, wherein on the three-dimensional model (A) of the denture base at least Add volume locally; 4) make the dental base semi-finished product (6) by rapid prototyping method, wherein CAM method is used in the rapid prototyping method and the digital three-dimensional second model (B) of the base semi-finished product is based on the CAM method. The invention also relates to a device for carrying out this method and a base semi-finished product produced by this method.

The invention discloses a technology for removing laser printed or copied writings on a paper surface, wherein the technology includes a removing solution and a removing method. The removing solution formula comprises hydrofluoric acid, a self-solidifying denture base polymer (also known as a dental base acrylic resin liquid) and water (tap water or distilled water) with the preparation ratio described in the description. The removing method comprises paper soaking. With utilization of the theory of 'similarity and intermiscibility', the laser printed or copied writings on the paper surface are dissolved by the prepared solution, so as to achieve the purpose of removal. Because the dissolution method almost has no damage to the paper, the paper having the writings removed can be recycled.

The invention provides a method for measuring the through hole rate of a 3D printing titanium alloy bone trabecula structure oversleeve. According to characteristics of the bone trabecula structure oversleeve, the bone trabecula structure oversleeve is divided into 12 areas; a bone trabecula structure oversleeve theoretical model formed by a crystal structure bone trabecula or a bone trabecula facilitating bone growth is created, and graphs of surface and internal bone trabecula structure forms of the bone trabecula structure oversleeve theoretical model are obtained; the dental base acrylic resin powder is poured into the 3D printing titanium alloy bone trabecula structure oversleeve to obtain morphological graphs of the 3D printing titanium alloy bone trabecula structure oversleeve on the surface and the internal bone trabecula structure; clear images of bone trabecula structure morphological graphs on the surface and inside the 3D printing titanium alloy bone trabecula structure oversleeve are collected by utilizing the digital correlation technology; the surface and internal through hole rate of the 3D printing titanium alloy bone trabecula structure oversleeve is determined byadopting the comparison method. The method is advantaged in that the purpose is to accurately detect the through hole rate of the titanium alloy bone trabecula structure oversleeve printed by a 3D printer.

In the method for manufacturing full or partial dentures: A) providing 3D data of the oral cavity situation in the state without teeth or with partial teeth; B) digitally constructing the denture base for the lower and upper jaw respectively; C) digitizing accurately create virtual teeth with a matching occlusion and tooth shapes chosen according to esthetic criteria; in the case of complete dentures: D1) using an automated method from the group consisting of methods for building layers and methods for grinding materials and D2) using an automated method from the group consisting of a method of building layers and a method of grinding material to make a denture base; or in the case of a partial denture: D1) using a method consisting of a building layer and D2) using an automated method of the group consisting of a method of building layers and a method of grinding material to manufacture the support structural or fixed elements.

The invention belongs to the technical field of denture preparation and particularly relates to a homogeneous denture material and a patternless manufacturing process. The material is mainly prepared from the following components in parts by weight: 100 to 120 parts of special water for a dental department, 95 to 105 parts of dental base acrylic resin powder, 0.8 to 2 parts of binding agent and 0.5 to 0.8 part of plasticizer. The patternless manufacturing process of the homogeneous denture material comprises the following steps: firstly, weighing all the components according to the weight parts; secondly, uniformly mixing all the components, then filling an injection pipe with a mixture, injecting the mixture into a plaster model with a denture female die cavity at a certain pressure by using a special injection molding machine; performing heat treatment under the condition that the temperature is 90 to 150DEG C and the pressure is 1 to 20MPa, and cooling to obtain a finished product. The denture material provided by the invention has the properties of high toughness and mechanical strength, good bacteria resistance, and the like.

The invention discloses a butyl acrylate-methyl methacrylate copolymer based denture base material as well as a preparation method and application thereof. Methyl methacrylate as a first monomer is toughened by using butyl acrylate as a second monomer, the two monomers are copolymerized by using a suspension polymerization manner, the two monomers of the butyl acrylate and the methyl methacrylateform an oil phase, the consumption of the butyl acrylate monomer accounts for 1-10 wt percent of the mass of the oil phase, the consumption of the methyl methacrylate monomer accounts for 90-99 wt percent of the mass of the oil phase, and a copolymerized product and thermally-coagulative dental base acrylic resin liquid are uniformly mixed and heated and cured. The P(MMA-co-BA) in the invention is applied to the field of denture base materials; compared with the pure PMMA (polymethyl methacrylate) material, the bending strength and the impact strength are greatly improved, and the tensile strength is slightly increased, and the problem of the PMMA denture base material in the aspect of the mechanical strength, especially impact strength, is successfully solved.

Provided is a wireless orthodontic adjunctive treatment instrument; the wireless orthodontic adjunctive treatment instrument comprises: an oral cavity interior part, comprising a dental base (1) and a wireless receiving unit (11), said wireless receiving unit (11) being mounted on said dental base (1); and an oral cavity exterior part, comprising a wireless transmission unit (2) and a control unit (21); there is no lead connection between the wireless transmission unit (2) and the wireless receiving unit (11); the wireless transmission unit (2) comprises a first LC resonant circuit, and the first LC resonant circuit has a first resonant frequency; the wireless receiving unit (11) comprises a second LC resonant circuit, and the second LC resonant circuit has a second resonant frequency. The ultrasonic waves produced by the treatment instrument are capable of accelerating the movement of teeth during the orthodontic process, thus reducing the time for orthodontics, easing the pain experienced by the patient, and reducing the root resorption index, while also facilitating the restoration of resorbed roots.

The invention relates to a zirconia ceramic slurry for micro-flow extrusion molding and a preparation method and application thereof. The composition of the zirconia ceramic slurry includes ceramic powder, lubricant, dispersant, toughening agent and pH regulator; the composition and mass percentage of the ceramic powder are: alumina 3%-6%; titanium oxide 2%- 5%; dental matrix material zirconia 90% ~ 95%; the volume ratio of the lubricant composition is deionized water: glycerol = 9:1; the dispersant is sodium polyacrylate, the mass is zirconia The mass ratio of the sum of the ceramic powder, dispersant and toughening agent to the lubricant is 3:7-17. The present invention improves the rheological properties of the slurry through the addition of sodium polyacrylate organic matter, taking into account both high solid phase and rheological properties; enhances its strength and toughness, so that the ceramic slurry can be extruded smoothly under the micro-flow extrusion molding process, No or negligibly low liquid phase migration occurs, and the extruded body is less prone to collapse.

The invention provides a dental implant system. The dental implant system comprises an implant, an abutment and a dental crown, wherein the implant is in a cylinder shape, the implant is provided witha longitudinal blind hole and a side through hole, the blind hole is provided with an internal thread, the side through hole is located at the lower half part of the blind hole, and a movable claw penetrates through the side through hole and can slide in the side through hole; and the abutment comprises an upper connecting part and a lower connecting part, the upper connecting part is inserted into the dental crown and fixedly connected with the dental crown, the lower connecting part is provided with an external thread matched with the internal thread of the blind hole, and the bottom of thelower connecting part abuts against the end, at the blind hole, of the movable claw, so that the other end of the movable claw protrudes out of the outer side face of the implant. According to the dental implant system, the side through hole is formed in the lower half part of the blind hole of the implant of the abutment, the movable claw is arranged in the side through hole, and the bottom endof the lower connecting part of the abutment abuts against one end of the movable claw, so that the other end of the movable claw protrudes out of the outer side surface of the implant to abut againstbone tissue of a dental base, the dental implant is combined with smooth tissue more firmly, and the service life is prolonged.