39 results about "Gingival part" patented technology

An orthodontic appliance has a ceramic body and an archwire slot liner that is received in a channel of the body. The archwire slot liner has occlusal, gingival and lingual sections, and the lingual section is thicker than the occlusal or gingival section. The archwire slot liner helps resist fracture of the ceramic when the appliance is in use in the oral cavity, and yet need not adversely affect the aesthetic appearance of the appliance. A notch in the archwire slot liner is aligned with a channel in the body and provides a passageway for receiving a vertical auxiliary device.

Disclosed is a computer-implemented method of generating a virtual model of a set of teeth for manufacturing a physical model of the set of teeth, the method comprising: - providing a virtual model of the set of teeth (402), the model comprising a gingival part (401) and a tooth configured to be part of a removable component (405) in the model; - generating a cavity (407) in said gingival part, said cavity comprising a cavity wall, into which cavity said removable component fits such that an interface between the removable component (405) and the wall of the cavity (407) is defined, where the removable component (405) and the cavity (407) are configured to provide a gap at said interface; and - providing means (409) for supporting and positioning the removable component (405) in the cavity (407), where the means for supporting and postitioning are generated on one of said removable component and said cavity wall such that the means (409) for supporting and positioning extends across said gap between said removable component (405) and said cavity wall; - wherein the area of contact between the removable component (405) and the cavity wall at said interface is controlled by the shape of the adjoining surfaces of the means (409) for supporting and positioning and the other of the removable component (405) and the cavity wall.

The invention relates to a method for manufacture of a removable dental prosthesis (9) by moulding, the method comprising: a step of digital modelling of a prosthesis model (10'); a step of producinga mould (3, 4) comprising a lower half-shell (3) corresponding to a tooth part of the prosthesis and an upper half-shell (4) corresponding to a gum part of the prosthesis, the two half-shells being able to be joined together by affixing one to the other, thereby forming an impression of the prosthesis, the step comprising digital modelling of a model of the mould, followed by additive manufactureof at least the lower half-shell, and a step of producing the prosthesis, the step comprising in succession at least one provision of at least one artificial tooth, positioning of the artificial toothin a seat of the lower half-shell (3), assembling the mould and pouring a filler material into the mould. Removable dental prosthesis (9) obtained by the method.

The invention provides a bionic oral cavity structure for testing and application of the bionic oral cavity structure, and solves the technical problem that an existing bionic oral cavity structure needs to be improved in actual testing. The bionic oral cavity structure for testing comprises an upper jaw, a lower jaw, a driving unit, a sensor and a controller, and the structure is characterized inthat a gingiva part is made of a soft elastic material, a base body of the gingiva part is provided with a through hole and a cap part formed by extending upwards from an upper end opening of the through hole; a tooth part comprises molars and an implant all made of a hard material, the upper end of the implant penetrates the through hole of the gingiva and then extends into the cap part; the gingiva part and the implant are detachably fixed on a mounting plate, the sensor is a flexible sensor, and covers the cap part, a counter bore is formed in the bottom of each molar, the molars are mounted on the gingival part , and an integral body formed by the flexible sensor, the cap part and the upper end of the implant is embedded into the counter bore and is in close fit with the counter bore.

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 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.

The present invention provides a method of generating and modifying a virtual model of a tooth set, wherein the method enables the insertion of a restoration into a physical model of the tooth set manufactured from the virtual model of the tooth set.

The invention discloses an integrated 3D printing method for polyether ether ketone oral prosthetics in different colors, comprising the following steps: S1: Obtaining the patient's upper and lower jaws and obtaining their digital three-dimensional model data and obtaining the occlusal relationship between the upper and lower dentition and the patient's personality tooth color and gum color; S2: Based on the 3D data in S1, design the digital oral restoration and adjust its occlusal contact relationship with the opposing teeth to obtain the final 3D data model of the restoration; S3: According to the tooth color Different from the color of the gums, the 3D data model of the restoration is separated from the teeth and gum parts, and the printing data of different parts of the oral restoration are obtained and imported to the 3D printing device; S4: Determine the color of each part of the restoration (tooth color and gum color respectively). color), respectively proportioned and transported to the two print heads of the integrated 3D printing device for integrated printing to obtain the final oral restoration.

An orthodontic practice appliance (1) in the present invention includes an orthodontic tooth row (23) for orthodontic practice, an orthodontic gingival part (22) that holds the orthodontic tooth row (23) and is softened by the application of heat, and a metal member (24) that is placed inside the orthodontic gingival part (22) and has an exposure portion exposed to the outside. According to the present invention, when the orthodontic practice appliance (1) is immersed in hot water, the exposed metal member (24) is heated. The metal member (24) extends inside the orthodontic gingival part (22). Therefore, the orthodontic gingival part (22) is heated not only from the surface thereof in direct contact with the hot water but also from inside thereof by heat transmitted through the heated metal plate (24). Accordingly, heat is transmitted to the orthodontic gingival part (22) uniformly.

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 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 field of oral medical instruments. The purpose is to provide a highly biocompatible and stable dental implant with good structural strength and wear resistance. The technical solution adopted is: a dental implant with high biocompatibility and stability. The lower part of the abutment is inserted into the large-sized part of the upper part of the positioning installation hole, and a stepped inner hole is arranged inside the abutment, and the central bolt is inserted into the lower part of the positioning installation hole in the implant through the stepped inner hole to form a threaded fit. The abutment includes a base body and a gingival part made of zirconia ceramic block. A spring washer is arranged between the head of the central bolt and the stepped surface of the stepped inner hole, and the central bolt locks the spring washer and the abutment to the implant. The invention strengthens the structural strength and wear resistance of the dental implant, and effectively prevents the problem that the central bolt is easy to loosen and break in the prior art.

The invention discloses a titanium alloy false tooth bracket, which comprises a jaw plate matched with the patient's inner jaw, the outer side of the jaw plate has an arc-shaped edge matched with the neck contour of the remaining teeth, and dentures for covering the gingiva of missing teeth Mounting position, the titanium alloy denture bracket is molded by additive manufacturing using titanium alloy powder, the denture mounting position includes an anterior tooth mounting position, and a support frame is provided in the anterior tooth mounting position, and the titanium alloy denture bracket has high manufacturing precision , the surface is smooth and flat; the dentures are firmly installed, easy to wear, and firmly fixed to the oral cavity; the production of dentures takes a short time and is low in cost, which is a qualitative leap compared with the existing denture brackets.