65 results about "Incisor" patented technology

The invention discloses a fine-grained segmentation method and system for a three-dimensional CBCT skull image. The method comprises the following steps: firstly, constructing a first training data set; thirdly, in combination with the first training data set, training the secondary segmentation neural network model to obtain a trained secondary segmentation neural network model; then, segmenting a to-be-processed three-dimensional CBCT skull image by using the trained secondary segmentation neural network model to obtain a segmentation result of each structure of the skull; and finally, segmenting the bone cortex and cancellous bone of the upper and lower jawbones by using an improved region growing method to obtain a bone cortex and cancellous bone segmentation result corresponding to the upper and lower jawbones, thereby completing fine-grained segmentation of the three-dimensional CBCT skull image. According to the method provided by the invention, fine-grained areas of the oral maxillofacial region can be separated, and the fine-grained areas comprise intact skull, upper and lower jawbone, teeth, bone cortex, cancellous bone, neural tubes, maxillary sinus, incisor canals and other structures.

The application discloses a kind of three-dimensional CBCT skull image fine granularity segmentation method and system.The present application includes the following steps: first, construct first training dataset;Then, in combination with first training dataset, after training secondary segmentation neural network model, obtain trained secondary segmentation neural network model;Then, using trained secondary segmentation neural network model to the three-dimensional CBCT skull image to be processed is segmented, and the segmentation result of each structure of skull is obtained;Finally, using the improved region growing method is carried out the segmentation of the bone cortex and bone marrow of upper and lower jaw bones, and the bone cortex and bone marrow segmentation result corresponding to upper and lower jaw bones is obtained, so as to complete the fine granularity segmentation of three-dimensional CBCT skull image.The method proposed in the present application can separate the fine granularity region of oral and maxillofacial region, including complete skull, upper and lower jaw bones, teeth, bone cortex, bone marrow, nerve canal, maxillary sinus, incisor canal and other structures.

The invention provides a method, device and equipment for automatically generating an ideal dental arch line, and belongs to the field of data processing. The method comprises the following steps: acquiring a target tooth model; obtaining the widths of a plurality of target teeth in the target tooth model, wherein the plurality of target teeth at least comprise two incisor teeth; generating a front section dental arch line according to the widths of the plurality of target teeth; a first cutting end midpoint of a first far-end tooth and a second cutting end midpoint of a second far-end tooth are obtained, the first far-end tooth and the second far-end tooth are located on a rear section dental arch line of the target tooth model, and the first far-end tooth and the second far-end tooth are located on different sides of the incisor respectively; and generating an ideal dental arch line corresponding to the target tooth model according to the first cut end midpoint, the second cut end midpoint and the front dental arch line. Therefore, the generation efficiency of the dental arch line can be improved, and the user satisfaction is improved.

The utility model discloses an orthodontic traction mechanism which comprises a molar denture and an incisor denture, the front side of the molar denture and the front side of the incisor denture are respectively welded with a fixed plate limiting head, and the front side of the molar denture is rotatably connected with an arc-edge fixed plate I through the fixed plate limiting heads; the front side of the incisor tooth support is rotatably connected with a second arc-edge fixing plate through a fixing plate limiting head, the front side of the first arc-edge fixing plate is fixedly connected with a vertical positioning head, the front side of the second arc-edge fixing plate is fixedly connected with a transverse positioning head, and the left side of the vertical positioning head and the bottom of the transverse positioning head are fixedly connected with traction positioning bent rods; according to the utility model, pulling force is applied to the teeth through the traction arch wire, the teeth are pulled back to the correct position, and under the action of the nickel-titanium tension spring and the traction rubber band, extra traction pulling force except the traction arch wire is obtained between the teeth, so that the aim of further accelerating the traction speed of orthodontic treatment can be achieved.

A mold for a dental appliance includes a dental arch portion and a beam. The dental arch portion is associated with teeth of a user. The dental arch portion includes a first distal portion, a second distal portion, and an incisor portion disposed between the first distal portion and the second distal portion. The beam extends from the first distal portion to the second distal portion. The beam includes a label portion disposed between the first distal portion and the second distal portion. The label portion forms a label for identification of the mold.

The utility model relates to a mouse head fixing operation device, and belongs to the technical field of animal experiment equipment, the mouse head fixing operation device comprises a heatable bottom plate and a clamp assembly used for limiting upper incisor teeth and mouth of a mouse, two stand columns with holes are fixed on the heatable bottom plate, a cross rod is arranged between the two stand columns with holes in a sliding mode, and the cross rod slides in the vertical direction; long movable arms are arranged on the two stand columns with the holes, one ends of the long movable arms are arranged on the stand columns with the holes in a sliding mode in the vertical direction, the other ends of the long movable arms are arranged in an overhanging mode in the direction away from the clamp assembly, ear rods are arranged at the overhanging ends of the two long movable arms in a sliding mode, and the two ear rods slide in the direction close to or away from each other; the device has the advantages that the head of a mouse is further stabilized, secondary damage to the mouse caused by an operation device is avoided, the body temperature of the animal in the operation process is kept constant, and the success rate of the operation and the accuracy of experimental data are guaranteed.

The utility model relates to the technical field of dentistry. The utility model relates to a muscle agonist for linked correction of upper and lower teeth. The muscle agonist comprises an upper invisible tooth socket and a lower invisible tooth socket, wherein the upper invisible tooth socket is sleeved outside upper teeth; the lower invisible tooth socket is sleeved outside lower teeth; the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket; the occlusal surface at the molar position of the lower invisible tooth socket is connected or detachably connected with the occlusal surface at the molar position of the upper invisible tooth socket through a V-shaped bent connecting strip; an angle forming plate is clamped between the upper invisible tooth socket and the lower invisible tooth socket, and the angle forming plate is positioned on the occlusal surface of at least one of the upper invisible tooth socket and the lower invisible tooth socket. According to the utility model, by optimizing the structure of the muscle agonist, the upper invisible tooth socket can be conveniently matched with upper teeth, and after the upper invisible tooth socket is matched with lower teeth, the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket, so that the alignment of an upper jaw and a lower jaw is realized, and the correction of dentition deformity of relative protuberance of the upper jaw and retroduction of the lower jaw is realized.

The utility model discloses a trachea cannula incisor protective sleeve, which belongs to the technical field of incisor protective sleeves and comprises an upper protective sleeve, a lower protective sleeve is arranged below the upper protective sleeve, a fixing frame is arranged on the outer side of the lower protective sleeve, two limiting blocks are slidably connected to the inner wall of the fixing frame, and a limiting column is slidably connected to the inner wall of each limiting block. The ends, away from each other, of the two limiting columns are fixedly connected with the inner wall of the fixing frame, and the side faces, away from each other, of the two limiting blocks are fixedly connected with springs. According to the trachea cannula incisor protection sleeve, the inclined moving block can drive the limiting block to move towards the two sides to be opened, meanwhile, the limiting block can extrude the spring when moving, on the contrary, the spring can conveniently assist the limiting block to conduct closing reset, and therefore the opening and closing effect of the limiting block can be controlled under the cooperation of the inclined push plate and the spring; and therefore, the air pipe in the limiting block can be conveniently limited, and the situation that the air pipe shakes during use is avoided.

To solve the problem in a blade of a vibration multi tool which is provided with cutting teeth at the tip, the use of the blade enabling cutting of an object only by pressing a vibrating tip part against the object, in which when the vibrating tip part is brought into contact with the object, the cutting teeth bounce on a surface of wood or the like to scratch a surface of the object or cut a wrong part.SOLUTION: A blade for an electric tool having a drive shaft that performs reciprocating circular arc vibrations comprises: a tooth row formed linearly by a plurality of cutting teeth at a front end; and a connecting hole for connecting to the center of the drive shaft at a rear end. A first cutting tooth at a tip among the plurality of cutting teeth is formed with a tooth tip lower than that of an adjacent second cutting tooth, the second cutting tooth is formed with a tooth tip lower than that of an adjacent third cutting tooth, and the third cutting tooth is formed with a tooth tip lower than that of an adjacent fourth cutting tooth.SELECTED DRAWING: Figure 1

The utility model belongs to the technical field of oral medicine, and particularly relates to a split type jaw position relation recording tray which comprises an upper tray body and a lower tray body, and the upper tray body is detachably connected with the lower tray body. Arc-shaped grooves are prefabricated in the upper surface of the upper tray body and the lower surface of the lower tray body, and silicon rubber is placed in the arc-shaped grooves. The split type design is adopted, the tray is divided into the upper tray and the lower tray, the position of an occlusal plane can be accurately determined, and the boundary of upper and lower jaw teeth can be guided and arranged in the later period and cannot be obtained through an existing integrated median jaw tray; according to the utility model, the split type jaw position relation recording tray design is adopted, so that the position information about 1mm below the upper lip can be accurately obtained, and an accurate reference is provided for subsequent determination of the position of the lower edge of the upper anterior incisor.

The invention relates to the technical field of orthodontic tooth movement in animal experiments, in particular to a mouse orthodontic tooth movement model and a construction method thereof, and the mouse orthodontic tooth movement model comprises a traction assembly and an anchorage nail; the laboratory mouse is provided with a maxillary bone, second molar teeth growing on the maxillary bone and incisors growing on the maxillary bone, first molar teeth of the laboratory mouse are extracted, and an avoiding space is formed in front of the second molar teeth after the first molar teeth are extracted; the anchorage nail is connected to the maxillary bone and is positioned between the second molar and the incisors; the anchorage nail is fixed after being implanted into the maxillary bone, so that the position change of the traction assembly caused by connecting the traction assembly to the incisors can be avoided; the traction assembly is arranged between the second molar and the anchorage nail, the front end of the traction assembly is connected with the anchorage nail, the rear end of the traction assembly can penetrate through the avoiding space and is connected with the second molar, the second molar is used as an experimental moving tooth, and the movement rule of human clinical orthodontic teeth can be better simulated.

The invention relates to a cleaning apparatus, in particular for cleaning surfaces in the mouth, having at least one cleaning device for molars that can be guided over at least one jaw arch, and at least one cleaning device for incisors; wherein actuating devices for the movement of the cleaning devices are provided in the form of actuating rods which extend from the cleaning apparatus to the cleaning device, are extendable and retractable, and can be adjusted with regard to their lateral angle; wherein at least the at least one cleaning device for the molars has at least one clamping device which points toward at least one crown and is extendable and retractable, and is used to fix the cleaning device between two opposing jaw arches and to adjust the distance between the jaw arches.

1. Name of the Design Product: Lip and Tooth Protector. 2. Use of the Design Product: To protect the upper incisors and upper lip during oral surgery / oral examination. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Stereogram.

The invention relates to a cleaning device, in particular for cleaning surfaces in the oral cavity, comprising at least one cleaning device for molars and at least one cleaning device for incisors, which can be guided over at least one dental arch, wherein actuating devices for the movement of the cleaning devices are provided in the form of actuating rods, which extend from the cleaning device to the cleaning device and are extendable and retractable and adjustable in lateral angle, wherein at least the at least one cleaning device for the molars has at least one extendable and retractable clamping device pointing towards at least one tooth crown, for fixing the cleaning device between two opposing dental arches and for adjusting a distance between the dental arches.

The invention relates to the technical field of medical instruments, and mainly discloses a double-balloon dilatation guiding rapid trachea device and a using method thereof.The double-balloon dilatation guiding rapid trachea device comprises a trachea cannula and an incision device assembly which are used in cooperation, and the incision device assembly comprises a puncture body and a guide-in hose connected with the rear end of an incision device; the leading-in hose is provided with a first balloon and a second balloon which are tightly arranged front and back, and the first balloon and the second balloon are both connected with overflowing hoses. By arranging the incision device assembly and the trachea cannula, the operation difficulty of operators is reduced, the efficiency of tracheotomy operation is improved, more treatment time is won for patients, the first balloon abuts against the inner wall of the annular cartilage of the trachea of the patient, and the probability that the first balloon abuts against the inner wall of the annular cartilage of the trachea of the patient in the artificial airway expansion process is reduced; the medical risks that the tracheal ring is pressed to collapse or break, the cartilage is inwards rolled and exposed out of the tracheal cavity, granuloma is formed, and tube drawing is difficult are further improved, and the medical safety guarantee is further improved.

The utility model discloses a tooth grinding wheel for machining broken teeth and a tooth grinding module applying the tooth grinding wheel. The tooth grinding wheel comprises a cylindrical body, first single-face grinding teeth and second single-face grinding teeth. The middle of the cylindrical body is fixedly connected with a rotating shaft, the first single-face grinding tooth is provided with a right grinding face and a left suspension face, the second single-face grinding tooth is provided with a left grinding face and a right suspension face, the left grinding face is integrally connected to the right side of the right grinding face, and the axial distance between the left grinding face and the right grinding face is at least two times of the pitch of a to-be-ground piece; when a to-be-ground piece is machined, the left suspension face and the right suspension face do not make contact with the to-be-ground piece, the right grinding face machines a left tooth mountain of front teeth of the to-be-ground piece, the left grinding face machines a right tooth mountain of rear teeth of the to-be-ground piece in a tooth jumping mode, and the grinding starting point of the left tooth mountain is earlier than that of the right tooth mountain all the time. The tool has the advantages of being high in universality, high in grinding efficiency and suitable for machining a to-be-ground piece with a cylindrical blade on the left side tooth mountain and without a cylindrical blade on the right side tooth mountain, and the service life of the to-be-ground piece is long.

The invention discloses a multifunctional fixing device for mouse ventricular micro-injection and a using method. The multifunctional fixing device comprises an operation table, a height adjusting assembly, a fixing plate, a cranial height adjusting frame, a mounting base, an incisor hook and an ear rod. Wherein the operation table comprises a bottom plate and a vertical plate which are vertically connected, a sinking groove is formed in the bottom plate, and a lifting table is arranged in the groove; the height adjusting assembly is parallel to the vertical plate and close to the bottom plate side; the fixed plate is provided with two symmetrical extension strips at the moving end of the adjusting assembly and on the deviating side, the other surface of the fixed plate is provided with a length adjusting groove, and a first driving piece is arranged in the groove; the cranial height adjusting frame is connected with the first driving piece and provided with a second driving piece. A fixing hole is formed in the far end of the mounting seat; and the incisor hook is arranged on the mounting seat and is positioned above the fixing hole. The two ear rods are symmetrically arranged at the far end of the extension strip. The scheme has the effects of reducing damage to mice, reducing experimental pollution and improving operation stability.

The utility model discloses an incisor pitch measuring scale, which comprises a scale main body, a first measuring block and a second measuring block, length scales are marked on the scale main body, the first measuring block is fixedly connected to one end of the scale main body, the first measuring block protrudes outwards relative to the scale main body to form a first supporting part, and the second measuring block protrudes outwards relative to the scale main body to form a second supporting part. According to the utility model, the incisor pitch of a patient can be accurately measured, the fatigue of the teeth and the mouth of the patient can be relieved during measurement, and the ruler is simple in structure and convenient to operate.

An orthodontic device for pulling upper incisor teeth to achieve facial balance, comprising a first device (1) comprising an upper plate (5) located behind six upper incisor teeth and firmly fixed with an orthodontic adhesive, a first hook (3) and a second hook (4) being connected to the upper plate (5) of the first device, and a second device (2) comprising a right plate (6) and a left plate (7) covering all upper posterior teeth, a first wire (8) is connected to the right plate (6) and the left plate (7), and a second wire (9), which is a stainless steel spring hard wire at the premolar, is made into a left U-ring (12) and a right U-ring (13), while both ends of the wire are connected to the right plate (6) and the left plate (7).

The utility model provides an adjustable child orthodontic aid, which relates to the technical field of medical instruments and comprises a knob mounting plate, a button, a rotary elastic button, a winder, a tail tooth limiter, a rear tooth limiter, an incisor limiter, a limiting line and an incisor rear limiter. The upper part of a square open groove at the rear part of the tail tooth limiter is fixedly connected with the bottom surface of a knob mounting plate, and a T-shaped groove below the upper surface of the knob mounting plate is clamped and connected with a T-shaped rotating block at the bottom of a rotating elastic button; a circular through hole in the middle of the upper portion of the rotary knob mounting plate is rotationally connected with a connecting shaft in the middle of the wire winding device, and a set of limiting springs are movably connected into a circular hole in the middle of the wire winding device. And a limiting line is arranged to connect the whole device together, so that the knob is only required to be tightened. The connecting line is arranged to limit the device to a proper standard position, and the tightness is adjustable. The limiting stoppers are arranged, and each limiting stopper exists independently, so that the limiting stoppers can be suitable for oral cavities with any tooth shapes.

The invention discloses a jaw pad and a preparation method thereof. The jaw pad comprises a bag, wherein the bag comprises a bag-shaped shell, a bag-shaped cavity and a filling material filled in the bag-shaped cavity; the jaw pad is in contact with the appliance and does not cover a tooth cutting area. The jaw pad provided by the invention can realize dynamic adjustment of occlusion, is adaptive to tooth forms of patients, is more accurate and comfortable in occlusion shaping, can effectively improve the occlusion stability, is softer in material, improves the comfort and reduces tooth wear.

This invention discloses a method for determining digital dental malformation torque attachments. First, a digital dental malformation model is established based on the patient's CBCT data. The jawbone and tooth roots are shelled along the normal to obtain a three-dimensional model of the periodontal ligament. Boolean operations between the periodontal ligament and jawbone are used to obtain a digital dental malformation model containing the periodontal ligament. The digital dental malformation model, the constructed attachment model, and the invisible aligner model are assembled to obtain a digital dental malformation finite element simulation model. Then, the digital dental malformation finite element simulation model is meshed, material parameters are defined, and boundary conditions are determined. Finally, the initial tooth displacement and periodontal ligament stress distribution are analyzed based on the constructed digital dental malformation finite element simulation model to determine the safety of the attachment design for the movement of a specific individual incisor and the effectiveness of the torque design. Based on the interpretation results, the attachment design is modified or the attachment design is finalized.

The present disclosure provides a method and apparatus for processing dental images, which relates to the field of artificial intelligence technologies such as computer vision, deep learning, and model training. The specific implementation manners include: obtaining an image containing teeth; inputting the image into a tooth position determination network, and through the tooth position determination network, determining the probabilities of the position category distances of the teeth in the image reaching each position category, where the position category distance refers to the distance between the position category and the incisor position category, and the position category distances of different position categories are different. The present disclosure determines the position category of the teeth by determining the results obtained by the teeth in the image reaching the position category distances, so that a neural network that has learned the tooth position relationship can perform tooth position detection, thereby improving the accuracy of tooth position detection by utilizing the position relationship between teeth of different position categories.

The invention relates to a cleaning device, in particular for cleaning surfaces in the oral cavity, comprising at least one cleaning device for molars and at least one cleaning device for incisors, which can be guided over at least one jaw arch, wherein at least one extendable and retractable biting device is provided, for arrangement between two opposing jaw arches and for adjusting a distance between the jaw arches.

The invention provides an animal experiment head frame fixing device of a cranial nerve intervention nuclear magnetism compatible puncture robot. The animal experiment head frame fixing device comprises an ear rod support assembly acting on an external auditory canal on an animal jaw bone; the tooth rod support assembly acts on cutting teeth on the animal jaw bone, and the pressing plate support assembly acts on a nose jaw on the animal jaw bone; the lug rod support assembly, the tooth rod support assembly and the pressing plate support assembly are detachably installed on the main body base, and the lug rod support assembly, the tooth rod support assembly and the pressing plate support assembly can move on the main body base in the first direction. By means of the six-point positioning principle, on the premise that the 3R standard of animal experiments is met, animal injuries in the skull fixing process are reduced or avoided, the skull of the experimental animal can be reliably fixed, the displacement of the animal skull generated in the processes of external surgery and robot repositioning is within the experiment requirement range, and the animal skull can be prevented from being damaged. And the normal working performance of the MR and the operation precision of the robot are not influenced.

Dental matrices and crowns are disclosed for making dental veneers and crowns on a tooth. The dental matrix is adapted for the specific tooth type (e.g., premolar, molar, canine, incisor, palatal, lingual) being treated in a single treatment, which results in a veneer on the tooth, which may then be resurfaced, for an aesthetically pleasing appearance. A dental matrix for forming a crown on a tooth includes a body having an expandable tab, which allows the diameter of an opening to be expanded for removal of the matrix from the formed crown.

A movable tooth appliance is provided with a base plate, a hyperbolic reed used for generating acting force on incisors, a retention device fixed to molars and a tongue bar which abuts against a tongue so as to prevent the tongue from stretching forwards, and the hyperbolic reed, the retention device and the tongue bar are all fixedly assembled on the base plate; the tongue bar is located on the tongue side of the incisors and located behind the hyperbolic reed. According to the movable tooth appliance, the fixing device is used for fixing the interior of the whole oral cavity of the movable tooth appliance, the hyperbolic reed acts on incisors, an area abutting against the tongue is formed through the tongue bar, the tongue is prevented from stretching forwards accidentally, and then bad habits such as tongue stretching, tooth licking, finger sucking and primary tongue vomiting are avoided; therefore, the correction effect of the ground bag is improved.

The utility model discloses a muscle function training device, including deep coincidence appliance and opening and closing appliance, deep coincidence appliance includes first enclosure and first biteplate, first enclosure is the arch that matches the dental arch, first biteplate is provided in the central position of the inside of first enclosure, the width of first biteplate is less than the width of first enclosure, and the width of first biteplate is less than the width of first enclosure. The first biteplate can only be occluded by anterior teeth and cannot be occluded by posterior teeth; the opening and closing appliance comprises a second enclosure and two second biteplates, the second enclosure is in an arch shape matched with the dental arch, and the two second biteplates are symmetrically arranged at the two ends of the inner side of the second enclosure, so that the second biteplates can only be occluded by the rear teeth and cannot be occluded by the front teeth. According to the muscle function training device disclosed by the utility model, special training of deep folding or opening and closing can be carried out according to the actual condition of a patient, and the correction and training effects are improved.

The present invention discloses a bionic tunneling robot, comprising a body, a head mechanism connected to the body, and a forelimb mechanism and a hindlimb mechanism respectively connected to the front and rear ends of the body and used for moving and discharging soil. The head mechanism comprises an incisor assembly for biting and digging soil, a flexible cervical vertebra, and a first drive device. One end of the flexible cervical vertebra is fixed to the incisor assembly, and the other end of the flexible cervical vertebra is fixed to an end of the body close to the forelimb mechanism. The first drive device is installed at an end of the body close to the flexible cervical vertebra. The first drive device is used to drive the flexible cervical vertebra to bend so that the incisor assembly deflects. The present invention can drive the incisor assembly to deflect in all directions under the support of the flexible cervical vertebra through the first drive device, thereby increasing the dynamism of the head mechanism and improving tunneling efficiency.

The invention discloses an orthodontic bracket assembly and an orthodontic assembly bag for controlling axial inclination of teeth, and belongs to the technical field of orthodontics. The component comprises a bracket main body, a vertical accommodating part and a plug part, the bracket main body is used for being connected with a tooth body, the vertical accommodating part is fixed on the bracket main body, the inner surface of the vertical accommodating part is provided with a non-orthogonal geometric constraint or separation contact component, and the plug part can be inserted into the vertical accommodating part and is provided with an eccentric stress part. When traction is applied to the eccentric stress part, the plug part and the vertical containing part form two opposite counterforces in the non-adjacent area to form a couple, and tooth axial inclination control is achieved. According to the invention, the axis control torque can be reliably and predictably established in the early stage, the middle stage and the fine stage of orthodontic treatment, delaying, shaking and energy dissipation in the torque transmission process are avoided, the device is suitable for complete tooth positions such as incisors, canine teeth, bicuspid teeth and molar teeth, and the orthodontic efficiency and effect are effectively improved.