34 results about "Tooth Supporting Structures" patented technology

Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use.

An oral liquid dental suspension is disclosed, including (a) a tooth whitening agent; (b) a solvent; and (c) at least one of (i) a resin or (ii) a urethane. The suspension is formulated to be applied to the surface of human teeth, where it rapidly dries—even in the presence of saliva—to form an adherent varnish. This varnish enables prolonged and effective contact between the whitening agent and tooth enamel for enhanced whitening efficacy. The composition may further include one or more optional additives, such as sweeteners, glazing agents, teeth desensitizers, remineralization agents, sequestering agents, complexing agents, or fluoridation agents. Also provided are kits containing the oral liquid dental suspension and one or more applicators, as well as methods of use involving topical application to teeth and subsequent drying to achieve a whitening effect.

A dental composition for the desensitization and covering of an area of a human tooth comprising a finger malleable base material made up of a product consisting of either: one or more hydrocarbon-based waxes, possibly with either or both of an organic filler and an inorganic filler, an uncured, uncross linked silicone high consistency rubber base; or a hydrophobic water insoluble solid material that is malleable at 37° C. or lower and safe for a human oral environment. The dental composition also includes a combination of dry, powdered materials dispersed on a tooth-engaging surface of the finger malleable base material. The combination of dry, powdered materials comprises a water-soluble polymeric adhesive and at least one dental tubule blocking agent or hypersensitivity desensitization ingredient.

The present invention discloses a tool for locating foreign bodies deep in the maxillofacial region, comprising a bite plate sleeved on human dentition and a guide rod in contact with the foreign body, the guide rod comprising a positioning rod, a connecting block and a steering head for locating the foreign body, the bite plate having a connecting device for fixing the connecting block on a side close to the cheek of the human body, the connecting device having a first connecting hole, the connecting block having a fixing column cooperating with the first connecting hole, and one side surface of the steering head having a second jack for fixing the positioning rod. During use, the present invention performs positioning through imaging, and uses the positioning rod to transfer the positioning information to intraoperative operation, without any radiation, and without hardware equipment requirements for medical institutions, and the intraoperative placement process is simple, low in cost, and high in efficiency, saving operation time, and realizing true 3D navigation, and the adjustment accuracy of the positioning rod is improved by setting the steering head, the marking area and the pointer.

Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use.

The utility model discloses an intraoral X-ray photography IP image plate positioning device, which relates to the technical field of image plate positioning, and comprises a silica gel fixing clamp capable of being sleeved on teeth, the silica gel fixing clamp is connected with an IP image plate positioner through a flexible connecting rod, when the device is used, a fixing ring and an X-ray machine are assembled, so that the IP image plate is arranged on the inner side of the photographed teeth, and the positioning of the IP image plate is realized. The silica gel fixing clamp is sleeved on the non-shooting tooth on the opposite side of the shooting tooth, and the silica gel fixing clamp has clamping and wrapping effects on the tooth of a person, so that the tooth does not need to be carefully clenched when being shot, and the condition of deviation does not occur; through the arrangement of the silica gel fixing clamp and the IP image plate positioner, a proper shooting position can be quickly positioned, and especially when the same tooth is subjected to preoperative, intraoperative and postoperative contrast shooting, shooting at the same position and at the same angle is easier, so that a more accurate diagnosis result is obtained.

The invention discloses a method, device and medium for identifying human tooth cracks based on deep learning, wherein a sample training set is obtained by acquiring slice data of ex vivo teeth; a human tooth crack identification model is constructed, and the sample training set is input into the human tooth crack identification model to obtain a complete human tooth crack identification model; the crack prediction result of the slice data is predicted by the human tooth crack identification model, and a loss function is constructed to optimize the crack prediction result to obtain an optimized human tooth crack identification model; a learning rate is set by an SGD optimizer, and the optimized human tooth crack identification model is trained based on the learning rate; the trained human tooth crack identification model is obtained, and crack judgment is performed on the slice data of ex vivo teeth. The slice data is processed by the human tooth crack identification model, and crack judgment is performed on the slice data of ex vivo teeth, thereby improving the recognition ability and recognition accuracy of tooth cracks under the condition of limited sensitivity to tooth cracks.

The utility model provides an oral care cleaning device which comprises a handle, an elastic balloon is arranged on the handle, a brush head supporting pipe is vertically and fixedly arranged at one end of the handle, a water outlet hole is formed in the brush head supporting pipe, the elastic balloon is communicated with the brush head supporting pipe, and a brush head is arranged on the outer side of the brush head supporting pipe in a sleeved mode. The side, close to the handle, of the brush head is an outer convex face matched with the inner sides of the teeth of the human body, and the side, away from the handle, of the brush head is an inner concave face matched with the outer sides of the teeth of the human body. According to the utility model, the brush head which is vertically arranged at one end of the handle can extend into the oral cavity of a patient for cleaning and nursing under the condition that the opening of the patient is smaller, and the brush head is provided with the convex surface and the concave surface, so that the brush head can be respectively contacted with the inner side and the outer side of the teeth of a human body in the cleaning and nursing process, and the comprehensiveness of cleaning and nursing is ensured.

The application relates to the field of oral cavity auxiliary tools, in particular to an oral cavity implantation auxiliary guide plate. The oral cavity implantation auxiliary guide plate comprises a cushion plate, a limiting plate, a connecting plate, a guide shaft cylinder, a threaded rod, a sliding rod and a supporting plate. The cushion plate is arranged on the inner side of a human tooth in an external environment, the limiting plate is arranged on one side of the cushion plate, the opposite side of the cushion plate and the limiting plate is provided with a connecting seat in the center, one side of the connecting plate is provided with a connecting rod connected to one end of the connecting rod, the other end of the connecting rod is connected to the connecting seat, the edge of the limiting plate is flush with the edge of the cushion plate, the other edge of the limiting plate extends outward and protrudes, a strip-shaped groove is arranged at the protruding edge of the limiting plate, the strip-shaped groove extends along the extending direction of the limiting plate, and the sliding rod is connected to the strip-shaped groove. The application is fixed in the oral cavity tooth, so that the oral cavity is expanded through a single supporting mode.

A method for masking the appearance of a support structure underlying a highly translucent ceramic dental restoration is provided. The porous form of a zirconia ceramic dental restoration is treated with a liquid masking composition comprising 0.4 wt % to 50 wt % of one or more masking agents. The masking composition is applied to the internal surface of a restoration and a region of the facial surface of the restoration that is opposite the internal surface. After application of the masking compositions, treated zirconia restoration is sintered to greater than 98% theoretical density.

A mandibular advancement device for stabilizing and exercising muscles that support the human jaw and for improving chewing and biting function. The mandibular advancement device includes a base portion and two curved members extending outwardly from the base portion to form a generally arched-type shape. The device also includes two axles wherein each axle extends inwardly from a portion of each of the curved members. The device also includes two rollers, wherein each of the rollers is slidably disposed upon each of the axles for engagement by human teeth to achieve mandibular advancement.

The application discloses a tooth-shaped bionic indexable blade and belongs to the technical field of cutting tools. The bionic indexable blade comprises a tool rake face, a tool relief face and a cutting edge at the joint position of the tool rake face and the tool relief face. The curve characteristics of the cutting edge are taken from the cross-section curve of the tooth for biting and breaking food of human teeth. The tool rake face is provided with a chip breaker groove near the cutting edge. The curve characteristics of the chip breaker groove are taken from the cross-section curve of the tooth for grinding food of human teeth, which is used for chip breaking and chip removal. A boss is arranged behind the chip breaker groove of the tool rake face, which is convenient for clamping and assisting chip breaking and can increase the strength of the clamping position of the tool. A through hole is arranged at the central position of the tool rake face and the boss, which is used for fixing and clamping the blade. The application takes the tooth of human teeth as a bionic object through the bionics principle. The cross-section curve of the tooth for biting and breaking hard objects is taken as the cutting edge of the tool. The cross-section curve of the tooth side for grinding is taken as the chip breaker groove of the tool. The application combines the bionics and the curve cutting edge technology in modern cutting technology, aims to reduce the cutting force and cutting heat in the cutting process, reduce the peak value of the impact load, reduce the machining vibration, enhance the chip breaking capacity of the tool, improve the surface quality of the workpiece, enhance the machining safety and better meet the machining needs.

The present invention is applicable to the technical field of medical instruments, and provides a detachable universal root collar, comprising: a collar handle, a spring buckle is provided inside the collar handle, and a button is provided on one side of the collar handle; a collar rod, either end of the collar rod is built into the collar handle; a collar blade, both sides of the collar rod are connected with collar blades, and the collar blades are provided with grooves, which are located on the working surface of the collar blades and are concave inward, and the curvature of the grooves corresponds to the physiological curvature of the human tooth root; the tips of the collar blades on both sides are oriented in the same direction, and the working surface grooves face the same direction. The present invention can satisfy the requirement of applying a mutually opposite dislocation force without reselecting and replacing another instrument. When the present invention is used in tooth extraction in alveolar surgery, if the surgeon finds that the force direction is not ideal, the clamping force on the collar blade can be immediately applied or released to achieve replacement of the collar blade. The axial symmetry of the collar blades at both ends is used to change the direction of the axle force, which facilitates intraoperative operations and also reduces the manufacturing and sterilization costs of medical devices.

The invention belongs to the technical field of medical instruments, and particularly relates to a mouth dilator for gastroscopy, which comprises a gastroscope guide tube, and a water absorption structure is slidably mounted on the outer side of the gastroscope guide tube; the water absorption structure comprises a first sliding sleeve, the first sliding sleeve is slidably mounted on the outer side of the gastroscope guide tube, a water absorption plate is fixed to the bottom of the first sliding sleeve, a water absorption hole is formed in the bottom face of one end of the first sliding sleeve, a sterile water absorption cotton pad is arranged in the water absorption plate, and an extrusion sliding plate is slidably mounted at one end in the water absorption plate. A water filtering extrusion plate is fixed at the other end in the water absorption plate, and a sterile water absorption cotton pad is mounted between the extrusion sliding plate and the water filtering extrusion plate; and the tooth supporting structure comprises a second sliding sleeve. The gastroscope is provided with the sterile cotton pad capable of adsorbing saliva, saturated saliva can be led out of the oral cavity in an extrusion mode, the sterile cotton pad has the function of repeatedly absorbing saliva, the sterile cotton pad does not need to be replaced, gastroscope operation is not interrupted, and the possibility of contamination is also reduced.

The invention discloses a method for optimizing an occlusal surface dental crown based on iconography and topology, which comprises the following steps of: firstly, carrying out digital modeling and feature point extraction and processing on the geometrical morphology of natural teeth by using a three-dimensional image or 3D (three-dimensional) scanning technology, and constructing a normal tooth standard feature library; secondly, determining geometric engineering laws and biological-functional laws of different types of working tooth surfaces, and constructing representative standard working tooth surface geometric features; and finally, constructing a topological-morphological characteristic parameter set and a functional logic relation graph of the biological characteristics, the geometrical morphological characteristics and the intrinsic rule relation between the geometrical morphological characteristics and the functional characteristics of the typical type of human teeth, and determining the relation between the morphological characteristics and the functional characteristics of the molar occlusal surface. A mathematical model is used for describing geometric features of an occlusal surface of a dental crown, reasonability of the model is verified through clinical cases and experience, and further optimization is carried out to obtain a geometric shape model of a false tooth.

Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use.

This invention belongs to the field of endodontics, specifically relating to a simulated dental jaw model for the entire process of endodontic treatment. It includes a maxillary model, a maxillary base, a maxillary joint, a mandibular model, a mandibular base, a mandibular joint, a connecting device, a cervical joint, and a tail fixation device. The mandibular model includes a mandibular shell, a movable micro-adjustment module, and an extracted tooth. The mandibular shell is filled with a water-absorbing gel-like material. The movable micro-adjustment module is detachable. This invention allows for the rapid fixation and replacement of extracted human teeth, and can also recreate the adjacent relationships, periodontal microenvironment, and moist conductive environment around the tooth root. It can highly simulate the physiological conditions of extracted teeth within the dentition and jawbone, and is suitable for various teaching and training programs in endodontic microsurgery, dental restoration, and microsurgical root canal treatment, greatly expanding its application scenarios.

Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use.

The invention relates to the field of oral cavity auxiliary tools, in particular to an oral cavity implantation auxiliary guide plate. An oral implantation auxiliary guide plate comprises a base plate, a limiting plate, a connecting plate, a guide shaft barrel, a threaded rod, a sliding rod and a supporting plate, the base plate is arranged on the inner side of teeth of an external human body, the limiting plate is arranged on one side of the base plate, a connecting seat is arranged at the center of the side, opposite to the limiting plate, of the base plate, and a connecting rod is arranged on one side of the connecting plate; one edge of the limiting plate is flush with the edge of the base plate, the edge of the other side of the limiting plate extends and protrudes outwards, a strip-shaped groove is formed in the protruding edge of the limiting plate, the strip-shaped groove extends in the extending direction of the limiting plate, and the interior of the strip-shaped groove is connected to a sliding rod; the oral cavity expanding device is fixed in oral cavity teeth, so that the oral cavity is expanded in a single supporting mode.

The present invention discloses a teeth whitening device, which includes a mounting bracket and a light source panel assembly, wherein the mounting bracket includes an arc-shaped portion adapted to human teeth, and two mounting portions respectively arranged on both sides of the arc-shaped portion; the light source panel assembly is detachably connected to the two mounting portions. The teeth whitening device of the present invention is very convenient to assemble and disassemble, and is convenient for users to inspect and replace the light source panel assembly. At the same time, it can avoid direct contact between the light source panel assembly and teeth, so that the light source panel assembly will not be dirty, which is convenient for users to use next time; and it can also achieve an all-round whitening effect without dead angles.

The utility model discloses a silica gel appliance with high structural strength, which relates to the technical field of medical instruments and comprises an arc-shaped silica gel appliance body, the top and the bottom of the silica gel appliance body are respectively provided with an upper occlusion area and a lower occlusion area, the upper occlusion area and the lower occlusion area are provided with a plurality of tooth-shaped grooves, and the upper occlusion area and the lower occlusion area are respectively provided with a plurality of tooth-shaped grooves. Tooth-shaped grooves are formed in the top and the bottom of the silica gel appliance body, the distribution positions of the tooth-shaped grooves are matched with the distribution of teeth of a human body, a through hole is formed in the middle of the outer side of the silica gel appliance body, the through hole penetrates through the silica gel appliance body, and the through hole serves as a breathing hole. By means of the design, the appliance can be attached to teeth more tightly and accurately, when a patient chews to generate external force, the tooth-shaped grooves can better disperse stress, local stress concentration is effectively reduced, and the overall structural strength of the appliance is greatly improved.

The invention relates to method for developing and growing tooth organoids comprising the steps of, dissociating tooth tissue comprising dental epithelial stem cells, seeding the dissociated cells in a scaffold mimicking an extracellular matrix; and growing and passaging the cells in a medium suitable for organoid growth, wherein the medium does not comprise epidermal growth factor (EGF), thereby obtaining and expanding organoids.

The invention relates to the technical field of oral cavity teaching, in particular to an oral cavity teaching model. The tooth model comprises a lower gingival model strip and an upper gingival model strip assembled above the lower gingival model strip, and a plurality of mimicry tooth models are uniformly distributed and assembled on the top of the lower gingival model strip and the bottom of the upper gingival model strip. Through the structural design of the feedback mechanism and the anti-falling mechanism, the device is convenient for adjusting and positioning the position of the mimicry tooth model, and can simulate the pain sound according to the separation condition of the mimicry tooth model from the lower gingival model strip and the upper gingival model strip; through the structural design of the universal adjusting mechanism, the device can adjust various angles and directions of the mimicry tooth model, is beneficial to simulating the condition of the human teeth in a loose state, is simple in structure, is convenient to carry, and is convenient to use. The repeated use is convenient.

The invention provides a decayed tooth detection method based on a splitting spectrum optical attenuation coefficient by utilizing optical characteristics related to a decayed tooth structure wavelength. According to the method, a complete OCT spectrum is divided into four spectrum sections, each spectrum section is subjected to OCT image reconstruction and OAC calculation, and healthy teeth and decayed teeth can be distinguished by comparing OAC differences among the spectrum sections. A reliable experimental result is obtained by testing in vitro human teeth. Results show that the method can realize detection of different types of decayed teeth in dentin and enamel, the effectiveness of the spectral OAC method in the aspect of decayed tooth detection is proved, and a non-contact and non-invasive new method is provided for decayed tooth detection.

The invention discloses an amorphous zirconium oxide dental restoration material and a preparation method thereof, and relates to the field of ceramic dental restoration, the amorphous zirconium oxide dental restoration material comprises an amorphous zirconium oxide matrix and in-situ crystallized zirconium oxide microcrystal particles, the content gt of the amorphous zirconia matrix; 50 vol% gt, 50 vol% gt; the content gt of zirconia microcrystal particles subjected to in-situ crystallization; and 10 vol%. According to the invention, the amorphous zirconia with low hardness and rigidity is used as a material matrix, and the content of zirconia crystallites crystallized in situ is accurately regulated and controlled, so that the mechanical and tribological properties of the material are close to those of human tooth enamel, and the purpose of reducing excessive wear of natural teeth is achieved.

The utility model discloses a training model for tooth extraction surface scratch operation, a training model for tooth extraction surface scratch operation, including the hinged seat of the rotation of certain angle, detachably install a pair of model base of simulating alveolar bone on the front end of hinged seat up and down symmetry, be equipped with tooth extraction nest in the position of corresponding human tooth on model base, be equipped with gum model of simulating gum on the outer package of model base, be equipped with the installation groove of corresponding communication tooth extraction nest bottom end on the outside surface of model base of corresponding human maxillary first molar, detachably install maxillary sinus bottom mucous membrane model spare in installation groove, and be equipped with granulation model spare in the bottom bonding of tooth extraction nest. The utility model is favorable to the direct view simulation demonstration periodontal damage situation, is favorable to the student and promptly discovers and corrects scratch operation, can improve the training effect of scratch operation.

A set of primer appliances and a set of treatment appliances to be worn by a subject are provided. The primer appliances are first worn to prepare the local environment of the teeth for further repositioning of the teeth by the treatment appliances. The primer appliances may apply compression or force to one or more support structures of the teeth in a direction favorable for inducing a biological response of the one or more support structures that prepare the teeth for repositioning, for example by relaxing the tissue of the one or more support structures of the teeth. The primer appliances may cause minimal or no repositioning of the teeth. The treatment appliances are worn to reposition the teeth from an initial position to an end position of a treatment stage. The primer appliances can improve the efficiency and accuracy of tooth movement by the treatment appliances.

The invention relates to the technical field of gastroscope medical treatment, and discloses a gastroscopy auxiliary device which comprises a gastroscope tube and a mouth expanding block arranged in the middle of the gastroscope tube in a surrounding mode, an expanding piece is arranged at the bottom of the gastroscope tube in a surrounding mode and used for expanding an oral cavity, and a connecting piece is arranged at the bottom of the mouth expanding block. The two bayonet pieces are arranged in the middle of the interior of the mouth expanding block, teeth are fixed through the bayonet pieces, the human teeth are prevented from moving autonomously, then the auxiliary device is prevented from shaking in the oral cavity of the human body, meanwhile, the bayonet pieces can guarantee that the teeth abut against the plane, the teeth are prevented from driving the mouth expanding block to rotate, and the tooth expanding effect is improved. The safety of gastroscopy is guaranteed, the gastroscope tube is prevented from being moved in the oral cavity, the oral cavity is expanded through the flaring piece, the gastroscope is prevented from abutting against the oral cavity at an inlet, the risk that the gastroscope moves to damage the oral cavity due to movement of the gastroscope is avoided, and meanwhile the connecting piece is connected with the expanding piece, so that the safety of gastroscopy is improved. And the possibility of excessive expansion of the oral cavity is avoided through flaring.

The utility model discloses a tooth support structure and oral cavity washing equipment, which relates to the technical field of oral cavity treatment and comprises a water pick, a tooth socket component, a tooth support component, a connecting rod and an adjusting component. The device has the advantages that a medical worker can operate the device with one hand, the driving end moves outwards by extruding the pressing end of the pressing rod, and then the tooth support assembly is driven to tilt upwards to support and open the oral cavity of a patient. By means of the design, the operation process is simplified, and using convenience is improved. The V-shaped design of the connecting rod can play a role in relieving force in the clockwise movement process of the driving end, and damage to the oral cavity of a patient due to the too large opening and closing angle or the too large opening and closing force is avoided. And finally, when the operator loosens the rod body holding the oral irrigator and the pressing end, the driving end can be quickly pulled back inwards, so that the oral cavity of the patient is quickly closed. By means of the design, the discomfort time of a patient is shortened, and the comfort and safety of use are improved.