54 results about "TOOTH SIZE" patented technology

A dental mill blank is formed from a number of different self-supporting, malleable, curable (SMC) materials distributed within the blank so that a dental article machined from the blank closely resembles natural dentition in appearance or function. When in an uncured state, a single mill blank can be adapted to fit a variety of different tooth sizes and shapes, thus reducing the inventory of mill blank types required for fabrication of the range of possible tooth shapes and sizes.

Disclosed is a power-transmitting apparatus. A power-transmitting apparatus of the present invention comprises: a pin gear provided with a plurality of pins capable of rolling movement; and a spur gear provided with a plurality of teeth and en-gagingly coupled to the pin gear so as to be relatively movable, wherein the spur gear teeth are formed with a cycloid tooth shape, and a polygonal tooth root space is formed at a tooth root region of the spur gear. As compared to a trochoid tooth shape, the tooth shape of the spur gear engagingly coupled to the pin gear so as to be relatively movable according to the present invention has a greater tooth size so that it can be applied as a cycloid tooth shape capable of maintaining a sufficient tooth contact ratio, and can resolve a reduction in tooth thickness and the wedging of the pins from an undercut at the tooth root region.

A teeth indexing device for use in preparing dental prostheses is provided with a plurality of prefabricated denture teeth arranged in a dental arch-like configuration and connected to each other via a connector which may be integrated with the prefabricated denture teeth. Preferred teeth sizes and positions in the prosthesis can be determined using the device.

A kit which may be used for anterior tooth selection, the kit including a facial meter for measuring the width of a nose and / or the distance between the eyes, and for correlating the measurement to a tooth size, and an anterior tooth selection guide consisting of a plurality of cards which have various sets of upper anterior teeth of differing sizes, soft and bold, depicted thereon so that a dentist or dental professional may place a card adjacent the face of the patient to make an initial evaluation of the teeth to be selected based upon the use of the anterior tooth selection guide. The kit may also includes a mold guide which includes various sets of anterior teeth and posterior teeth. This kit facilitates the tooth selection process by the dental professional.

The digital teeth arrangement method provided by the present invention: (1) obtain the three-dimensional digital dentition by taking a model; (2) take a photo of the smile in the patient's frontal position; (3) use image processing software to remove the oral cavity surrounded by the upper and lower lips in the smile photo g Part; (4) Import the 3D digitized dentition and smile photos into the digital tooth arrangement software, and use the anatomical shape of the exposed teeth in the smile photo as a reference to adjust the size of the 3D digitized dentition to make it equal to the size of the teeth in the smile photo (5) Place the three-dimensional digitized dentition on the smile photo, adjust the position and rotation angle of the three-dimensional digitized dentition, and then lock the positional relationship between the three-dimensional digitized dentition and the smile photo to obtain the simulated smile picture h; (6) Arrange teeth according to the treatment plan and goals. The method of the present invention arranges the teeth with reference to the matching between the teeth and the whole face, especially the lip and the beautiful appearance of the smile, so as to further improve the orthodontic aesthetic effect of the digital tooth arrangement.

A method for the reconstruction of missing, broken and / or abraded teeth by means of face analysis. In order to determine the shapes and sizes of the teeth, the face of a patient, for whom the teeth are intended, is measured by means of one or more image-type pictures. The respective tooth size and tooth shape is determined proportionally from the obtained values.

The invention relates to an image big data acquisition and processing method. The method includes providing and using of a multifunctional dental filling system based on image recognition. The system comprises data acquisition equipment, image processing equipment, image recognition equipment and automatic filling equipment. The data acquisition equipment is used for high-definition oral image data acquisition in an oral environment of a patient to obtain high-definition oral images; the image processing equipment is used for processing the high-definition oral images to obtain processed oral images; the image recognition equipment is used for recognizing target teeth and tooth cavities in the target teeth on the basis of the processed oral images and determining actual sizes of the tooth cavities on the basis of tooth cavity sizes and target tooth sizes; the automatic filling equipment starts a coarse adjusting mode after receiving the actual sizes of the tooth cavities, determines corresponding filler volumes on the basis of the actual sizes of the tooth cavities in the coarse adjusting mode, and injects filler into the tooth cavities of the target teeth according to the determined corresponding filler volumes.

The invention relates to the field of machinery, in particular to a surrounding electric toothbrush with three-surface bristles. The electric toothbrush comprises an electric toothbrush body, and theelectric toothbrush body comprises a brush head. By the aid of design, bristles of three surfaces generate surrounding effects and are changed along with change of the thickness from front teeth to large teeth, adaptive effects of automatic fitting of the bristles meet tooth cleaning requirements of people with different oral cavity and different teeth, the bristles are arranged on three surfaces,the design solves the problem that the areas in the teeth cannot be easily brushed and cleaned, various bad brushing habits are avoided, the brush head positions cannot be actively changed, finding of cleaning points is omitted, full processes of tooth brushing can be completed by pushing the brush head, tooth brushing processes are simplified, and tooth brushing efficiency is improved.

The invention discloses an automobile clutch driven disc integrating three shock absorbers. The driven disc comprises a pre-shock absorber and a main shock absorber, an idling crawling working condition shock absorber is added besides the main shock absorber and the pre-shock absorber, the three shock absorbers are each provided with an independent damping system and an independent rigidity system, and the pre-shock absorber and the idling crawling working condition shock absorber are located at the two sides of a main shock absorbing shaft sleeve plate; the three shock absorbers are each provided with a pre-shock absorbing shaft sleeve plate, a main shock absorbing shaft sleeve plate and an idling crawling working condition shaft sleeve plate, the three shaft sleeve plates are connected with a spline sleeve in series in a spline tooth mode, the spline sleeve is connected with an input shaft of a gearbox through an inner spline, and by matching the tooth sizes of the three shaft sleeve plates and the corresponding spline sleeve, the multilevel shock absorption of larger turning angle is achieved. The driven disc has the advantages that the three shock absorbers can control and adjust axial pressure and damping pieces independently, and the multilevel shock absorption performance of larger turning angle is achieved.

The invention discloses a method for repairing a broken tooth chain wheel. The method comprises the following steps: step I, acquiring a dimension parameter and a material of the chain wheel; step II, polishing a broken tooth position; step III, preheating the broken tooth position to 300 to 400 DEG C and performing heat preservation; step IV, preheating a welding rod to 300 to 400 DEG C, and setting current of a welding machine to 80 to 100 A, performing repair welding on the broken tooth position of the chain wheel, and enabling the part after repair welding to cover an original chain wheel tooth part and making machining allowance; step V, performing annealing treatment on the chain wheel after repair welding; step VI, performing flaw detection on a repair welding part of a broken tooth, if a flaw appears, removing the flaw part by using carbon arc gouging, and repairing the flaw part by using steps II to V; and step VII, machining the contour of the repair welding part into a wheel tooth size by using a machining mode. According to the method for repairing the broken tooth chain wheel provided by the invention, the repair welding part and the chain wheel body have high fusibility; the whole chain wheel is prevented from being changed by separate repair on a chain tooth, so that cost is greatly reduced.

The invention discloses a tooth-size-adjustable gear which comprises a gear body, an adjusting shell, a tooth shell, sliding teeth, a toothed bar, an adjusting bar, an adjusting hole and a gear shaft hole. The adjusting shell is arranged outside the gear body. The tooth shell is made on the surface of the adjusting shell. The sliding teeth are mounted in the tooth shell. The toothed bar is connected with the sliding teeth. The adjusting hole is made on the surface of the gear body. The adjusting bar is connected with the toothed bar. The gear shaft hole is made at the center of the gear body. Therefore, the tooth-size-adjustable gear is simple in structure, adjustable in tooth size, high in universality, convenient to use, safe and reliable.

The invention provides a fabricating method of an all-ceramic preformed crown basic set. The fabricating method comprises the following steps: (1) designing the size of the all-ceramic preformed crownset according to the collected tooth size data, wherein the thickness of the all-ceramic preformed crown is 4-6 mm, and carrying out computer typesetting; (2) selecting zirconium oxide, and carryingout cutting to form a zirconium oxide crown; (3) carrying out coloring in a coloring agent; (4) carrying out sintering in a sintering furnace; (5) carrying out grinding for trimming; (6) carrying outglazing on the outer part of the crown, and carrying out sintering; and (7) carrying out quality testing and delivery. For the fabricating method of the all-ceramic preformed crown basic set, the zirconium oxide crown with the excellent biocompatibility, aesthetic degree and safety is adopted, thus the quality stability of the preformed crown is guaranteed, the problems of mixing ratio error of the raw materials and the coloring agent and the incomplete forming during the injection moulding process are avoided, due to the high precision of a five-axis linkage device, the delivery qualificationrate of the product is guaranteed, the production and fabrication procedures are reduced, thus the labor cost is reduced, and meanwhile, the batch production can be accelerated.

The invention relates to the field of machinery, in particular to a surrounding adaptive electric toothbrush with a reset mechanism. The electric toothbrush comprises an electric toothbrush body, theelectric toothbrush body comprises a brush head, the brush head comprises a brush head handle, and a first plate is arranged on lower portion of the brush head handle. By the aid of design, bristles of three surfaces generate surrounding effects and are changed along with change of the thickness from front teeth to large teeth, adaptive effects of automatic fitting of the bristles meet tooth cleaning requirements of people with different oral cavity and different teeth, the bristles are arranged on three surfaces, the design solves the problem that the areas in the teeth cannot be easily brushed and cleaned, various bad brushing habits are avoided, the brush head positions cannot be actively changed, finding of cleaning points is omitted, full processes of tooth brushing can be completed by pushing the brush head, tooth brushing processes are simplified, and tooth brushing efficiency is improved.

The invention belongs to the technical field of medical equipment, and in particular, relates to an axial surface polymerization degree checker for a dental prosthodontic tooth preparatory body, wherein the checker comprises an adjusting assembly and a checking assembly. The adjusting assembly comprises a handle, a sliding block and a button; the sliding block is slidingly connected with the handle, and the button is located on the top surface of the sliding block; the top surface of a mobile arm is fixedly connected with the sliding block, and the sliding block is slidingly connected with thehandle; the mobile arm is adjusted by sliding the sliding block, and the distance between the mobile arm and a fixed arm can be adjusted according to the size of teeth of patients in different age groups; the mobile arm can be adjusted by controlling the button at any time when the patients are examined, so as to check different teeth of the patients. A spring is fixedly connected between the mobile arm and the fixed arm. The spring can apply tensile force on the mobile arm and the fixed arm, so that the mobile arm and the fixed arm always keep fit with the teeth of the patients, so as to beconvenient for doctors to observe and judge.

The invention discloses a broach, which comprises a head and a tail, wherein a neck for connecting, a transition cone, a guide part for guiding and cutting teeth for finishing cutting operation are sequentially arranged from the head to the tail; the head is used for clamping the broach and transferring power; the transition cone is used for introducing the guide part of the broach into a workpiece; the cutting teeth comprise 10 to 20 rows of inner ring cutting teeth and 60 to 100 rows of pawl cutting teeth; and the tooth size of each row of cutting teeth is sequentially increased from the cut-in end to the cut-out end. The broach is specially used for machining the inner teeth of a ratcheting pre-buried piece of an intelligent clutch, can finish cutting of triangular teeth and trapezoidal teeth at one time, is high in machining efficiency, meets the requirement for precision, greatly improves the economic benefits of enterprises, and enhances the market competitiveness of products.

The invention relates to the field of machinery, in particular to an electric toothbrush. A surrounding type self-adaptive electric toothbrush comprises an electric toothbrush body; the electric toothbrush body comprises a brush head; the brush head comprises a brush head handle; and a cam is arranged on the front portion of the brush head handle. According to the design of the invention, the surrounding type self-adaptive electric toothbrush is provided; the surrounding effect generated by three-sided bristles is changed along with the thickness from incisor teeth to molar teeth; the self-adaptive effect of automatic attachment of the bristles is used for meeting the tooth cleaning requirements of people with different oral cavities and tooth sizes; due to the design of the three-side bristles, the cleaning problem of areas which are not suitable for being brushed on the inner sides of teeth is solved, various bad tooth brushing habits are avoided, a user does not need to actively change the position of the brush head to find a cleaning point any more, the whole tooth brushing process can be completed only by pushing the brush head, the tooth brushing process is simplified, and the tooth brushing efficiency is improved.

Disclosed is a mouth gag, which comprises: a body placed in a patient's mouth to keep the mouth open and expose teeth; and a plurality of markers arranged on the body to allow for determining tooth size.

The invention relates to the field of machinery, in particular to an electric toothbrush. An electric toothbrush with three-sided bristles comprises an electric toothbrush body which comprises a toothbrush head, the toothbrush head comprises a toothbrush head handle, a first plate is arranged below the toothbrush head handle, and a first bristle sheet and a second bristle sheet are longitudinallyarranged below the first plate. By the design, tooth cleaning demands of people different in oral cavity and tooth size can be met through surrounding effects of the three-sided bristles and self-adaptive effects of automatic bristle fitting along with thickness changes from front teeth to molars. By design of the three-sided bristles, the problem of difficulty in cleaning inner side areas of teeth is solved, various bad tooth-brushing habits are avoided, a user does not need to initiatively change toothbrush head positions to search cleaning points and only need to push the toothbrush head tocomplete a whole tooth-brushing process, and accordingly the tooth-brushing process is simplified, and tooth-brushing efficiency is improved.

The invention relates to an adapter ring, which is used for joining a first lens fixing seat and a second lens fixing seat with different thread sizes. The adapter ring comprises a first hollow cylinder, wherein the first hollow cylinder is provided with an inner surface and an outer surface which are opposite to each other; the outer surface is provided with external thread which is threaded with the first lens fixing seat; the inner surface is provided with an internal thread which is threaded with the second lens fixing seat; and the internal thread has a tooth size different from that of the external thread. By fixing the first lens fixing seat to the second lens fixing seat through the first hollow cylinder, the adapter ring improves the matching elasticity between the first lens fixing seat (such as a lens barrel or a lens barrel seat) and the second lens fixing seat. The invention also relates to a lens module using the adapter ring.

A method for preparing a partial or full dental prosthesis comprising1.1. acquiring a patient's oral situation by taking an impression or by digital recording;1.2. if required, digitizing the patient's oral situation;1.3. selecting the teeth forming the dental prosthesis from a library of teeth or groups of teeth to obtain a virtual set-up of the teeth, which is positioned virtually in a space that takes the acquired patient's situation into account; 1.3.1 said library contains designs of dental arches, tooth shapes, tooth sizes1.3.2 said library contains designs of the gingiva, and1.3.3 said library contains total set-ups and / or modular set-ups for all of Angle's bite classes;1.4. if required, modifying the set-up obtained from the library;1.5. virtually embedding the teeth arranged in the virtual set-up in a virtual gingiva;1.6 producing the real prosthesis.

A four-sided toothbrush used for cleaning oral cavity teeth in daily life of people is composed of two parts, the front part is a U-shaped toothbrush head part of the four-sided toothbrush, and the rear part is a toothbrush handle part. Bristles are arranged on the two inner walls of the front U-shaped brush head, the U-shaped bottom and the U-shaped back. The two U-shaped inner walls clamp teeth,so that the toothbrush does not move randomly in use, gingival bleeding is avoided, and the toothbrush is suitable for people with different tooth sizes. The four-sided toothbrush has a simple structure, is convenient and practical, can clean three sides of each tooth, solves the problem that common teeth cannot clean dirt at places, cleans the teeth, shortens the tooth brushing time, protects gingiva and prolongs the service life of the teeth.

A tooth-brush for protecting oral cavity and cleaning teeth is composed of bristles, brush body and handle, and features that its brush body is an arc slot matched with the arrangement of teeth, the bristles are planted to the inner surface of the arc slot and both surface of slot bottom, and the bristles on the inner surface form a cavity corresponding to the tooth size. Its advantages are sipmle structure, low cost and high effect.

The invention belongs to the technical field of dentistry and specifically relates to a dental card and a method for measuring dental model sizes based on dental card comparison. The dental card comprises a card main body, wherein a plurality of measurement scale areas are arranged on the card main body; each measurement scale area comprises a plurality of adjacent and abreast measurement scale sets which are used for measuring tooth sizes; each measurement scale set comprises two parallel vertical scale lines with the equal height, a middle horizontal scale line and a lower horizontal scale line, the middle horizontal scale line and the lower horizontal scale line perpendicularly intersect with the vertical scale lines, the middle horizontal scale line is arranged in the middles of the vertical scale lines, the lower horizontal scale line is arranged at the lower parts of the vertical scale lines, and an inclined scale line is arranged between the two vertical scale lines. The dentalcard disclosed by the invention has the advantages of a simple structure, low cost and convenience in use; the tooth sizes can be obtained through reference comparison between the scale lines on the dental card and the tooth models, the tooth sizes can provide reference standards for manufacturing false tooth, and false tooth manufacturing accuracy is improved.