59 results about "Veneer" patented technology

The invention provides a digital oral aesthetic repair method, and particularly relates to a method for designing dental crown veneers for patients. The digital oral aesthetic repair method includes following steps: acquiring face smile digital images and an intraoral tooth crown three-dimensional digital model of a patient; utilizing the face smile digital images to acquire a two-dimensional digital aesthetic design list; mutually overlapping the two-dimensional digital aesthetic design list and the intraoral tooth crown three-dimensional digital model through three-dimensional point cloud digital splicing technology; adding a standard three-dimensional tooth crown veneer digital model into a corresponding position in the intraoral tooth crown three-dimensional digital model; performing deformation adjusting on the standard three-dimensional tooth crown veneer digital model according to the two-dimensional digital aesthetic design list to acquire a three-dimensional digital model of a tooth crown veneer designed for the patient. The three-dimensional digital model is mainly applied in oral implanting, orthodontics and aesthetic repair, can simulate repair effect of the patients before operation and guide work of doctors and technicians during operation and is a quite effective tool for communication between doctors and patients, between doctors and between doctors and technicians.

The invention relates to a manufacturing method of cast porcelain dental veneer, comprising the following steps: constructing a diagnostic model by digital three-dimensional technology, and making the diagnostic model by means of three-dimensional printing; making a diagnostic model for a patient based on the diagnostic model using a temporary crown material Veneering; on the basis of the diagnostic veneer, perform tooth preparation, impression taking, and superhard plaster filling of the patient to obtain a working model, and perform three-dimensional scanning and centric occlusal registration on the working model; the work after tooth preparation The spatial registration of the model and the diagnostic model is carried out so that the two models are completely consistent in the posterior region, and the edge line of each preparation is constructed in the difference area of ​​the anterior labial surface by using the NURBs curve; The veneer is directly used for lost-wax casting to obtain a veneer made of cast porcelain material. The cast porcelain tooth veneer made by the invention achieves the unity of appearance and function after restoration.

The invention discloses a method for constructing a natural tooth type database, comprising the following steps: 1. Recording object information; 2. Obtaining a digital model; 3. Segmenting dentition data; 4. Modifying tooth shape; 5. Mirror image processing; 6. . Tooth type anatomical landmark area editing; 7. Dental data positioning editing; 8. Natural tooth type database import. The invention also discloses a system for constructing a natural tooth type database. The present invention is a method and system for constructing a natural tooth type database. The construction of the natural tooth type database is completed through the above-mentioned technology, which solves the problems of tooth type mismatch, single shape, lack of natural shape texture, and poor aesthetics in the current digital design of dental restoration; Moreover, the natural tooth database constructed by this method can be used in any digital restorative design, such as crowns, bridges, veneers, inlays, removable partial dentures, and complete dentures; Matching profile data.

The invention relates to a composite ceramic material, and a preparation method and application thereof. Specifically, the invention relates to a method for preparing the composite ceramic material. The method comprises the following steps of compression molding, high-temperature sintering, surface treatment, osmotic treatment and resin recombination. The invention also relates to the composite ceramic material prepared by the method and the application of the composite ceramic material in preparing a repairing material for tooth bodies or other hard tissues. The method disclosed by the invention has the advantages that the technology is simple, the operation is easy, and the like; the composite ceramic material prepared by the method has the advantages that the strength is high, the machinability is good, the elastic modulus and the hardness are similar to the tooth bodies, and the like, and is particularly suitable for being used as a repairing material of the tooth bodies, for example, the composite ceramic material can be used for preparing a dental crown, a veneer, an inlay and an onlay and can also be used for repairing other hard tissues.

The present invention provides a method for making a tooth restoration model based on multi-source images. The method determines the standard two corresponding to the edge shape of the tooth to be restored based on the edge shape of the tooth to be restored in the digital image of the facial smile obtained. The crown veneer is obtained to obtain the two-dimensional digital model of the crown veneer; then, the two-dimensional digital model of the crown veneer is adjusted to obtain a two-dimensional simulated restoration model that conforms to the characteristics of the facial smile; then, based on the two-dimensional simulation The restorative model and the 3D digital model of the crown in the mouth were used to obtain a 3D simulated restorative model that conforms to the characteristics of a facial smile; finally, based on the Dicom 3D volume model taken by oral CBCT, it was registered and fused with the 3D simulated restorative model, and the obtained model can be used for dental restoration. Crown restoration measurement, root change diagnosis and other clinical analysis. The invention can provide an effective guidance basis for oral restoration and tooth change prediction.

Disclosed is a template for forming a veneer on a tooth using a composite resin material that is curable by radiation. The template includes a tooth-contacting portion having a smooth concave surface for contacting the composite, the smooth concave surface having a shape that is complementary to a desired natural tooth shape. The tooth-contacting portion is formed of a material capable of transmitting the radiation such that the composite is curable through the tooth-contacting portion to form a veneer having a surface shape that conforms to the desired natural tooth shape. Also disclosed is a kit including a plurality of such templates and a method of using the templates to form a veneer.

The invention relates to a silicon nitride-resin dual-continuous phase composite ceramic material and a manufacturing method and application thereof. Specifically, the present invention relates to a method for manufacturing a silicon nitride-resin bicontinuous phase composite ceramic material, the method including molding, high-temperature sintering, surface treatment, infiltration treatment and resin compounding steps. The present invention also relates to the silicon nitride-resin bicontinuous phase composite ceramic material prepared by the method and the application of the composite ceramic material in manufacturing tooth or other hard tissue restoration materials. The method of the present invention has the advantages of simple process and easy operation, etc. The composite ceramic material prepared by the method has the advantages of high strength, good processability, elastic modulus and hardness similar to tooth body, etc., and is especially suitable for tooth restoration Materials, e.g. for the manufacture of crowns, veneers, inlays, onlays, but also for the restoration of other hard tissues.

The invention discloses ceramic veneer for a tooth. The ceramic veneer is prepared from components in percentage by mass as follows: 70%-85% of ZrO2, 4%-12% of HfO2, 3%-8% of Al2O3, 3%-6% of TiO2, 1%-4% of Y2O3, 0.05%-0.2% of La2O3 and 1%-3% of Nb through mixing and firing, wherein the average particle size of the raw materials ranges from 0.05 mu m to 0.3 mu m. The ceramic veneer for the tooth is made from safe and non-toxic raw materials, can be soaked in saliva for a long time without separating out harmful substances and cannot deform or become crisp even if used for a long period of time.

The invention discloses a method for making a color-shielding veneer in an oral crown. Based on a digital optical scanner and denture design software, a color-shielding veneer is produced by using 3D printing technology. The color-shielding veneer uses low-transmittance ceramic materials. Through the design of the veneer range on the digital abutment model, crystallization after the 3D printing technology is completed, it will be placed on the abutment preparation to cover the discolored tooth, and facilitate the restoration of the high-transparency all-ceramic material crown. The veneer made by this method expands the scope of clinical application of high-permeability ceramic materials such as glass ceramics, enhances the strength of the restoration, and improves the patient's experience and satisfaction in seeing a doctor.