39 results about "Gingival part" patented technology

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).

The invention relates in general to the fabrication of provisional or temporary crowns utilized to temporarily restore dental implants. The pre-fabricated provisional crowns are designed to specifically mate to the gingival portion of the abutment fixture of a dental implant or the collar of a dental implant. Therefore, the clinician can place the implant alone or in conjunction with a tooth extraction, and may select and place a pre-fabricated provisional crown for that particular implant system in the same appointment. The pre-fabricated provisional implant crown will generally comprise a hollow shell. The shell will be hollow in the interior aspect in order to accommodate implant prosthetic abutment systems.

The invention provides Chinese medicinal (honeysuckle, baikal skullcap root and forsythia) toothpaste and a preparation method thereof. Each 100 grams of Chinese medicinal toothpaste contains 0.03 to 10 grams of honeysuckle extract, 0.03 to 10 grams of baikal skullcap root extract and 0.03 to 10 grams of weeping forsythia extract. The Chinese medicinal toothpaste has strong anti-inflammatory, antibacterial, anti-virus, immunity regulating, free radical clearing and anti-oxidation effects. The baikal skullcap root can inhibit caries bacteria, can effectively degrade bacterial endotoxin, and can be used for preventing and treating peridentitis; and the honeysuckle has antibacterial effect of different degree on most pathogenic bacteria, and the use of the honeysuckle for local medication isan effective means for preventing and treating oral diseases. The baikal skullcap root, the honeysuckle and the forsythia have the effects of clearing heat, detoxifying and dispelling wind and heat from the body; and the three Chinese medicinal extracts used together have synergistic effect, and can effectively inhibit the propagation of bacteria which generate peculiar smell in the oral cavity. Oral bacterial sensitivity test proves that the Chinese medicinal toothpaste has obvious effect of inhibiting related pathogenic bacteria in bacterial plaque of the gingival part.

The invention relates to the three-dimensional image processing technology field, especially relates to a gingival generating method used for bracketless orthodontic treatment. The gingival generating method comprises steps that (1) a positive direction of a teeth model is set, and the model is arranged in a forward direction; (2) the teeth model is scanned to acquire the three-dimensional model of the teeth model, and the gingival part and the teeth part of the three-dimensional model, which are required to be kept, are segmented, and segmented edges are sequentially stored; (3) the points of all of the segmented edges are respectively extended along a Z axis negative direction or along the projection directions of the Z axis negative direction of the points of the edges to acquire the intersected points with a specific bottom surface, and therefore the contour line of the bottom surface of the gingival is acquired; (4) uniform sampling is carried out on the contour line of the bottom surface of the gingival, and therefore the width of the bottom surface of the gingival and distances between the bottom surface of the gingival and the segmented edges are acquired, and a number of layers is calculated; (5) the number of the sampling points of the bottom surface is calculated, and the contour points of every layer are sequentially generated according to the calculation result of the step (4); (6) the contour points of every layer are used to reconstruct triangular surfaces, and the gingival is acquired. By adopting the gingival generating method provided by the invention, the original form of the gingival of the key part is maintained, and the number of the triangular surfaces is reduced as much as possible, and then the size of the model is reduced.

Disclosed is a method of generating and modifying a virtual model of a set of teeth, where the method provides that a restoration can be inserted into a physical model of the set of teeth manufactured from the virtual model of the set of teeth.

A palate-free upper denture comprising a denture base formed of an acrylic resin having (i) a lower portion bearing a plurality of downwardly protruding teeth; (ii) an upper portion defining an upper surface so shaped as to receive in retentive intimate engagement complementary peripheral gingiva portions of the upper mouth; and (iii) a lightweight metallic mesh embedded in said acrylic resin and usable in an amount to allow of satisfactory retention. The denture overcomes prior art drawbacks by allowing significant reduction in the amount of acrylic needed while providing sufficient structural integrity and acceptable upper denture retention.

An improved cosmetic accessory device for teeth that simulates the appearance of an assemblage of teeth and gum. The device includes a gum portion and a tooth portion shaped and dimensioned to cover the user's upper or lower front teeth. The device is made of a nontoxic, nonirritating, tasteless, odorless, resilient, easily cleaned and chemically stable material that does not stick to natural teeth, gums, or most dental work. In use, the device is held in place by custom-fitted inner projections that match the spaces between the user's own front teeth. Optionally, a shelf extending just across the front teeth and extra fitting material placed in spaces where there are missing teeth provides additional security in holding the device in place. The device may be refitted as necessary by simply partially submerging the device in hot water. Unlike typical conventional novelty dental devices, the natural teeth and gums are not completely covered and there is no protrusion into the mouth cavity, so the device is comfortable to wear and does not interfere with natural speech or bite closure.

The invention provides a dental zirconia repair material as well as a preparation method and application thereof. The repair material comprises a gingiva part and a tooth part which are connected with each other, the preparation method comprises the following steps: firstly, placing mixed gingiva color raw materials in a mold, paving the mixed gingiva color raw materials in the mold, and then sequentially paving the mixed gingiva color raw materials in the mold according to a color sequence from deep to light; sequentially carrying out dry pressing, cold isostatic pressing and pre-sintering to obtain a biscuit; then the biscuit is sequentially processed, formed and sintered, and the dental zirconia repair material is obtained. According to the repairing material, the gingiva part is combined with the tooth body part, so that the problem of gingiva loss in the implant tooth is solved, the attractiveness of the implant tooth is ensured, and the repairing material has a relatively good application prospect.

The invention relates to a teeth model. The teeth model comprises an upper dental crown part and a lower gingival part, wherein a truncated cone sheet is arranged below the gingival part, the upper bottom area of the truncated cone sheet is smaller than the lower bottom area, the diameter of the upper bottom is greater than the width of the gingival part, and the lower bottom is leveled to the bottom of the gingival part. A method for preparing a concealed correcting device by utilizing the teeth model comprises the following steps: (1) obtaining the teeth model with the truncated cone sheet on the bottom by virtue of three-dimensional modeling and three-dimensional printing; (2) placing the teeth model on a metal plate of a film pressing machine, and carrying out the film pressing; (3) after the film pressing is ended, separating a diaphragm from the teeth model, slightly bending the hot-pressed diaphragm part, enabling the truncated cone sheet to be warped, holding, by a hand, the truncated cone sheet, and vigorously turning upwards the diaphragm, thus obtaining a primary tooth socket template; and (4) further processing to obtain the concealed correcting device. The method is simple and practical, the operation speed is high, the efficiency is improved, the cost is reduced, and the damage probability of the macromolecular diaphragm when in demolding can also be maximally reduced.

A computer-implemented method of generating a virtual model of a set of teeth for manufacturing a physical model of the set of teeth includes providing a virtual model of the set of teeth generating a cavity in said gingival part, into which cavity a removable component fits, where the removable component and the cavity are configured to provide a gap at an interface; and providing for supporting and positioning the removable component in the cavity, wherein the area of contact between the removable component and the cavity wall at the interface is controlled by the shape of the adjoining surfaces of the supporting and positioning and the other of the removable component and the cavity wall.

The invention discloses a method for integrated 3D printing of polyether-ether-ketone oral restorations with different colors. The method comprises the following steps: S1, acquiring the upper jaw andthe lower jaw of a patient, acquiring digital three-dimensional model data of the upper jaw and the lower jaw, and acquiring an upper dentition and lower dentition occlusion relationship and personalized tooth colors and gingival colors of the patient; S2, on the basis of the three-dimensional data in S1, designing a digital dental restoration and adjusting the occlusal contact relationship between the digital dental restoration and the jaw teeth to obtain a three-dimensional data model of the final restoration; S3, according to different tooth colors and gingival colors, separating the three-dimensional data model tooth of the restoration is separated from the gingival part to obtain printing data of different parts of the dental restoration body and importing the printing data into 3D printing equipment; and S4, respectively determining colors (tooth color and gingival color) of each part of the restoration, carrying out proportioning respectively, and conveying the date to two printing heads of the integrated 3D printing equipment, and carrying out integrated printing to obtain a final dental restoration material object.

The invention relates to a method for designing a digital abutment tooth for digital tooth implantation technology, comprising the following steps: a) tooth implantation planning: the tooth implantation is planned according to digital data in a computer system loaded by a patient, resulting in that an implant is positioned optimally; b) a referential digital abutment tooth is established: the referential digital abutment tooth is established at the implantation position and is positioned in the implant; c) the referential digital abutment tooth is regulated: the referential digital abutment tooth is provided with a lower gingival part and an upper gingival part which is arranged above the lower gingival part; the angle between the lower gingival part and the upper gingival part is regulated according to the best rehabilitation position; d) the digital abutment tooth is completed: after the digital abutment tooth is regulated, a digital abutment tooth to be implanted is formed for subsequently outputting and manufacturing a finished abutment tooth product. Therefore, the angle of the digital abutment tooth can be regulated, and the occlusal angle for the subsequently implanted teeth is led to be more precise.

The invention relates to the technical field of medical instruments, and provides an integrated dental implant and a preparation method thereof. The integrated dental implant includes:a tooth root part which is integrally arranged at the lower part of the integrated dental implant and can be embedded in an alveolar bone; and an intra-gingival part which is integrally arranged on the top of the tooth root part, wherein the intra-gingival part can be embedded in the gingiva covering the alveolar bone, wherein a thread part combined with an alveolar bone is arranged at the lower part of the tooth root part, and a bone trabecula part is arranged between the thread part and the intra-gingival part. During machining, the machined intra-gingival part is placed in a hole site of a 3D printing tool to be fixed, the combination face of the intra-gingival part and the tooth root part is flush with the tool plane of the 3D printing tool, and the tooth root part is subjected to 3D printing. The integrated dental implant has the beneficial effects that the machined intra-gingival part is high in hardness, so that the taper hole is connected with the false tooth and is stressed, and the damage rate is low; the tool is used for assisting 3D printing of the tooth root part, the printing forming precision is improved, and the rejection rate is greatly reduced.