438results about "Teeth filling" patented technology

Image acquisition device comprising: - a support (12); - a dental retractor (14) fixed to the support and defining a retractor opening (24); and - means for fixing an image acquisition device to the support in a position in which the acquisition device is oriented to receive an image of the retractor opening.

A dispensing system includes a dispensing outlet, a cartridge, a connector and a plug element arranged within the connector and at the cartridge. The connector is arranged at the cartridge and the dispensing outlet is separate from the connector and the cartridge and is lockable to the cartridge by a rotation of the connector into a position of use. A rotation of the connector into the position of use brings about an axial movement of the plug element relative to the cartridge and to the dispensing outlet.

There is provided a method comprising: detecting and / or segmenting a dental-related anatomical structure of a subject from a dental 3D imaging model, wherein the dental-related anatomical structure includes a target for injection of anesthesia by a dental syringe, accessing sequential frames of an oral cavity of a subject captured by an image sensor during a dental session of the subject, presenting within a GUI, at least one fused frame depicting a merger of the sequential frames and the segmentation of the dental-related anatomical structure of the subject registered to the sequential frames, wherein the dental-related anatomical structure is depicted on the sequential frames at a location indicating the target for injection, and dynamically updating the location of the dental-related anatomical structure depicted on the sequential frames according to dynamic adaptation of a pose of the image sensor.

The present invention is a dental material carrier and a dispenser gun thereof configured to mark the amount of a dental material used or remained in the dental material carrier. The dental material carrier comprises a body with opaque scratchable colored markings and to be pre-loaded with a predetermined amount of a dental filling material. The dispenser gun having a housing configured to receive the dental material carrier and a piston with an extended metal bar attached to the piston. The metal bar having a pin to scratch the markings on the dental material carrier. In one embodiment the dispenser gun further has a locking mechanism to provide a one way advancement of the piston and lock the piston at the point of usage of the dental material used inside the carrier. In another embodiment the marking element is an O-ring.

The invention relates to an intelligent control method and system for an internal cooling wet preparation nickel-titanium root canal treatment file, and solves the problems that traditional control is difficult to adapt to treatment requirements of root canals in different forms, excessive or insufficient cutting is likely to occur, and complications such as root canal wall lateral penetration and instrument breakage are caused. The method comprises the following steps: iteratively optimizing a root canal preparation strategy through a multi-target reward function by taking pressure, temperature, cleaning effect and anatomical characteristics as state spaces and taking a filing tool rotating speed, a motion mode and flushing fluid flow as action spaces, and generating a parameter combination comprising the optimal rotating speed, the optimal motion mode and the optimal flushing fluid flow; the parameter combination is output to a control system to drive the nickel-titanium root canal treatment file to execute corresponding operation, a safety threshold value is dynamically corrected according to the treatment stage and anatomical characteristics, and when the parameters deviate from the threshold value, early warning is triggered and compensation is executed. The method has the advantages that multi-parameter intelligent regulation and control are achieved, and the safety and effectiveness of root canal therapy are improved.

The present invention relates to diagnostic intraoral scanning and tracking. The present invention relates to methods and apparatus for acquiring, using, and displaying a three-dimensional (3D) volume model of a patient's dental arch. The 3D volume model may include surface information (e.g., color) as well as information about internal structures (e.g., near-infrared (Near-IR) transparency values ​​of internal structures including enamel and dentin).

Apparatuses and methods are provided for displaying the position of a dental file during endodontic treatment. Data showing the morphology of a tooth is obtained. In one embodiment, the data is X-ray image data. A three-dimensional representation of the dental file positioned in the tooth is generated, and a length that the dental file extends from an upper surface of the tooth is determined from the three-dimensional representation. A representation of the dental file is provided in the image of the tooth obtained from the data showing the tooth morphology, with the representation of the dental file being depicted such that a part of the representation of the dental file extends from the upper surface of the tooth in proportion to the length that the dental file extends from the upper surface of the tooth as determined from the three-dimensional representation and such that a remaining part of the representation of the dental file extends into the tooth, with a part of the remaining part of the representation of the dental file being positioned in the root of the tooth in the image. The image of tooth and representation of the dental file may be displayed.

Methods and kits of materials and supplies for restoring teeth by an injection molding process and / or mold overlays in situ in a patient's mouth so as to correct the imperfect teeth of the patient's dentition. The imperfect teeth are corrected by applying restoration materials using a mold of a corrected model of the patients dentition placed over the imperfect teeth. Adjacent teeth may be covered with a polymer release material prior to injection molding of teeth to be corrected, such that the teeth to be corrected have at least one tooth between them draped with the polymer release material to provide a space adjacent to each of the corrected teeth. The corrected teeth are then covered with the polymer release material in a second round of treatment and restoration material is applied to one or more previously covered teeth to provide a first layer which simulates the dentin layer of teeth. Thereafter a simulated enamel layer is applied over the dentin layer using one or more alternating molds and yet another simulated incisal layer is applied over the enamel layer using one or more alternating molds employing the techniques described.

The invention discloses a tongue blocking device for mouth rehabilitation based on the mouth rehabilitation department, and relates to the technical field of mouth rehabilitation, the tongue blocking device comprises a bearing plate, a connecting rod is welded to the outer side face of the bearing plate, an adjusting mechanism is arranged at the end, away from the bearing plate, of the connecting rod, and the adjusting mechanism is used for adjusting the extrusion force on the mouth. By arranging the adjusting mechanism, after the bearing plate is placed on the jaw of a patient, the effect of positioning the device in the oral cavity of the patient can be achieved by starting the adjusting mechanism, a circulation mechanism is arranged at the end, away from the bearing plate, of the connecting rod and used for changing the circulation mode of liquid, and the circulation mechanism comprises a middle pipe. The middle pipe is welded to the end, away from the bearing plate, of the connecting rod, and communicating pipes symmetrically penetrate through the outer side face of the middle pipe, so that the tongue of a patient is blocked during oral rehabilitation.

A method for aligning a digital 3D model of a pair of dental arches, including a mandible and a maxilla, to produce an occlusion. The method estimates representative planes for the mandible and maxilla of the 3D model and transforms the model so that the representative planes are aligned with their respective coordinate systems and represented in a horizontal view. The method also transforms the model so that the mandible and maxilla are aligned with the same coordinate system and represented in a front view. The digital 3D model is then occluded so that the mandible is in occlusion with the maxilla or within a near-occlusal distance. The digital model of the occluded pair of dental arches can also be translated or rotated so that it is displayed centered in the front view.

The utility model discloses a horizontal clamping screw retention type loose tooth fixing device, which comprises a lip-cheek side splint, a lingual palatal side splint and a retention screw, the lip-cheek side splint and the lingual palatal side splint respectively comprise a tooth fitting part and a retention part, the lip-cheek side splint and the lingual palatal side splint are respectively clamped on the inner side and the outer side of a tooth, and the retention screw is fixed on the lip-cheek side splint and the lingual palatal side splint. The opposite surfaces of the tooth fitting part are respectively matched with the lip buccal surface and the tongue palate surface of the tooth in shape, and the retention part is embedded in the tooth gap or the tail end of a dental arch and is fixedly connected through a retention screw. The dental implant can be used at the early stage of tooth loosening, and dentition defects can be repaired in time without affecting subsequent periodontal treatment.

The working tooth to be treated is prepared in the patient's mouth. A guide device is fastened onto the tooth to fix its position. A cutting device inserted into the guide device is moved, so that the flange of the cutting device slides along a slot extending within the guide device and makes contact with it, and the tool of the cutting device removes a portion of the working tooth, thereby forming the prepared surface of the working tooth. The tool includes a portion with a curved profile in the plane containing the axis of the tool, so that the working tooth is rounded by its tool portion. The cutting device and guide device are removed from the patient's mouth. A dental alignment device is fastened onto multiple teeth, including the working tooth, so that the prepared surface and the dental alignment device face each other.

The utility model discloses a temperature sensing structure of a hot melting gutta-percha gun, which comprises a gutta-percha filling barrel, a gutta-percha filling barrel fixing seat and a temperature sensor, one end of the gutta-percha filling barrel is detachably connected with the gutta-percha filling barrel fixing seat, and a heating coil is sleeved on the outer wall of the gutta-percha filling barrel when the temperature sensing structure is used; the temperature sensor is connected with the glue filling barrel and senses the temperature of the glue filling barrel in real time. According to the temperature sensing structure, the glue containing barrel and the temperature sensor are designed to be separable, the temperature sensor senses the temperature of the glue containing barrel through the elastic piece with good thermal conductivity, and the temperature can be sensitively, rapidly and accurately monitored; and due to the plug-in design of the glue filling barrel and the glue filling barrel fixing seat, the glue filling barrel is more convenient to disassemble, and the temperature sensing effect is not influenced.

The invention relates to a two-part dental sealant, a method of application with a syringe device, and a kit. Specifically, the present invention provides a method of administering a two-part dental sealant, the method comprising providing a syringe device (1) comprising a cartridge (10) comprising a first chamber and a second chamber. The first chamber comprises a first portion of a dental sealant comprising a (meth) acrylate resin and an oxidation curing agent. The second chamber comprises a second portion of the dental sealant comprising a (meth) acrylate resin and a reducing curing agent that reacts with the oxidizing curing agent of the first chamber. The first portion and / or the second portion of the dental sealant further comprise a single component or components that neutralize acids and promote remineralization. The syringe device comprises a dispensing nozzle (17) comprising a static mixer and an outlet at one end of the cartridge and a plunger (20) at the opposite end of the cartridge. A kit for storing and applying a dental sealant is also described.

The invention relates to an assistance system (10) for assembling a retaining device (1), the retaining device (1) comprising: - at least two plates (4), - at least one retaining element (6); the guide (11) comprising at least two guide surfaces (12), each guide surface being shaped to be at least partially complementary to a single plate (4), the guide (11) further comprising at least one guide mark (13) for the retaining element (6), the guide surfaces (12) and the guide mark (13) being positioned relative to one another in a predetermined manner, in order to be at least partially complementary to the retaining device (1) in a retaining configuration.

The utility model relates to the technical field of pit and fissure sealing agent smearing, and particularly discloses a pit and fissure sealing agent extrusion coating device which comprises a main body, the main body is arranged to be a hollow cylindrical shell, and friction blocks are continuously arranged on the surface of the main body; a sliding rod is embedded in one side of the surface of the body, one side of the sliding rod is inserted into the body and connected with a rubber block, and one side of the sliding rod is connected with a connecting block. According to the extrusion coating device for the pit and ditch sealing agent, the plugging block and the connecting rope are arranged, the plugging block is pulled outwards so that the plugging block can be taken out from the interior of the feeding port, at the moment, the pit and ditch sealing agent can be added according to the discharging port, feeding of the pit and ditch sealing agent is facilitated, and the use convenience of the device is improved; when the friction block extrudes the pit and groove sealing agent, the pit and groove sealing agent flows to the outlet pipe more smoothly, residues of the sealing agent in the main body are reduced, the utilization rate of the sealing agent is increased, and waste is avoided.

The invention provides a preparation method of a high-flexibility TiNi alloy wire, and belongs to the technical field of alloy materials. According to the method, a cold drawing-straightening annealing-aging heat treatment mode is adopted, B2-to-B19'martensite phase transformation can be fully inhibited, and only B2R phase one-step phase transformation occurs in the cooling and heating processes. The R phase serves as a martensite phase in the TiNi alloy, the elasticity modulus of the R phase is smaller than that of a B2 parent phase and that of a B19'martensite phase, the nucleation process is avoided through the nanometer domain structure, and the R phase directly grows up under the action of external stress. Therefore, by constructing the R-phase nano domain structure, the deformation behavior of the TiNi alloy can be changed, the TiNi alloy wire with high flexibility and appropriate elasticity modulus is obtained, the TiNi alloy wire is suitable for the required medical environment such as the field of tooth orthodontics, heating is not needed in the operation gap in the use process, and the clinical operation process can be simplified.

The present invention provides a snoring and sleep apnea prevention device (1) for preventing snoring and sleep apnea, comprising: a preventive device body (10) extending forward and backward, with a front end portion sandwiched between a user's upper teeth (2) and lower teeth (3) and a rear end portion extending rearward along the user's tongue (6); an upper teeth stopper jaw (20) provided on the top surface of the front end portion of the preventive device body (10) and protruding upward so as to block the user's upper teeth (2) from protruding forward; a lower teeth guide inclined portion (30) provided on the bottom surface of the front end portion of the preventive device body (10) and inclined upward as it moves forward so as to protrude further forward than the upper teeth (2) caught on the upper teeth stopper jaw (20) when the user's lower teeth (3) bite the bottom surface of the preventive device body (10); and a stopper wing (50) extended forward of the upper teeth stopper jaw (20) so as to hook on the user's lips (4, 5).

Oral appliances, their components, and methods of their use for oral mapping and hygiene are disclosed. One method of using an oral appliance, comprises using a tool while the tool is at least partially within the oral cavity of a living creature; moving the tool, with a motion generator comprised of at least one linear and / or rotary motion-producing device; retrieving a map from machine-readable memory; and processing, with nonhuman processing circuitry, the map to generate control signals for controlling movement of the motion generator; and the processing circuitry using the map to control the motion generator to move the tool within the oral cavity so that the tool performs one of the functions of: cleaning, inspecting, scanning, imaging, dispensing, repairing, and surgery of anatomical features of the oral cavity.

The present invention relates to a dental article (10) comprising: an applicator (20) having a compartment (30) having an inner surface (31) with a structured surface area comprising a recess (32), a piston assembly (40) movably located in the compartment (30), and a dispensing section (50) located at a distal end of the compartment, the piston assembly comprises a piston main body (41); a lubricant composition (60) located at least in the recesses of the structured surface area (32); a dental material (70) in contact with the lubricant composition (60) is located in the compartment.

The present invention relates to an endodontic file, in particular to a mechanical endodontic file configured to penetrate and remove material contained in a root canal of a patient undergoing endodontic treatment. The present invention also relates to a method of manufacture of said endodontic file.

The utility model provides a syringe for dispensing dental composite material, including syringe and push cap. Syringe inside is equipped with plunger, and plunger is screwed into the inside of injection cavity through thread cooperation. Push cap is located in the inside of injection cavity, is equipped with force chamber and push surface on push cap, and is connected with the limiting piece on the syringe to prevent push cap from being pushed out. The limiting piece is sleeved with the cap. The plunger is screwed into the syringe from one end, and then is pushed into the push cap and screwed into the limiting piece from the other end, and the push cap covers the top end of the plunger. The composite material is loaded into the syringe through the channel opening in the limiting piece, and after loading is completed, the cap is sleeved on the limiting piece. The limiting piece structure of the utility model can effectively prevent the push cap from being pushed out, and through the thread cooperation between the plunger and the inner wall of the syringe, the syringe can realize accurate material dispensing.

There is provided a kit for performing socket shield technique, and methods for using the kit, wherein the kit may include a wheel bur, having a first working surface disc and a second working surface disc configured to smoothen and cut hard tissues of a tooth; one or more trephine burs with stoppers configured to cut a root canal to create a first tooth fragment and a second tooth fragment, wherein each stopper is compatible with each of the one or more trephine burs; a root fragment remover configured to extract the first tooth fragment and stabilize the second tooth fragment; a split end elevator having a v-shaped notch tip configured to remove the first tooth fragment; a cylindrical bur to control the thickness of the second root fragment; and a round bur configured to separate the second root fragment from unwanted fragments.

The present application relates to the instrument and method of filling root canal, specifically relates to a kind of self-expanding root canal filling instrument combination based on the concept of root apex biological closure and its using method, for solving the volume shrinkage caused by the existing root canal sealant and gutta-percha point filling after filling, leading to root canal filling failure, and the toxic and harmful ingredients contained in root canal sealant and gutta-percha point itself can bring potential harm to the patient The deficiency, the self-expanding root canal filling instrument combination includes self-expanding composite bioceramic root canal sealant and root canal plug tip;The self-expanding composite bioceramic root canal sealant is composed of liquid agent, powder;The liquid agent is distilled water or physiological saline;The powder is divided into A component, B component;The material of the root canal plug tip is medical pure titanium or titanium alloy.

A dental implant system and methods include a fiducial device and marker in communication with a robot arm having a procedure-conducting device with interchangeable end effectors. A virtual procedure plan includes implanting a screw portion of a dental implant in registration with the fiducial marker. A first end effector forms a bore according to the virtual procedure plan and the screw portion is implanted therein. An abutment engaged with the screw portion defines a receptacle in known spatial relation with the screw portion. The receptacle in known spatial relation with the abutment is engaged by a locating probe end effector. Alternately, a scan gauge with a body extending laterally to an engagement element engaged with an anchor portion is imaged, the engagement element and the body being arranged in known spatial relation with the anchor portion. From the known spatial relations, spatial parameters of the implanted screw portion are determined.

The invention relates to the technical field of medical instruments, in particular to a manufacturing method of an implantation guide plate. The implantation guide plate comprises a guide plate base body, planting holes are formed in the guide plate base body, the planting holes penetrate through the guide plate base body, and the method comprises the steps that an planting guide plate model is designed based on nodes of data flow; and adjusting the finally generated implantation guide plate by modifying each node in the node graph. In the implanting operation process, through accurate matching of the guide plate base body and a patient tooth three-dimensional model, the accuracy of the position of the implanting hole is ensured, so that the implanting precision of the implant is improved; meanwhile, the model is designed in a data flow node mode, so that the guide plate structure design is more visual and flexible, rapid adjustment and personalized customization are facilitated, and the design efficiency and clinical suitability are remarkably improved.

The present application relates to the technical field of image data processing, in particular to a missing tooth shape intelligent reconstruction method based on contralateral tooth mirror image transformation. According to the patient's masseter axial ultrasound image and temporal muscle axial ultrasound image, the robustness of each side of the masticatory muscle of the patient's both cheeks is determined; the average wear degree of each side of the patient's both cheeks is measured, and then a regression equation of the average wear degree and the robustness is constructed; the coordination coefficient between the missing tooth side and the contralateral side of the patient is determined by using the regression equation, and then it is judged whether the contralateral homonym tooth of the missing tooth needs to be corrected; if correction is needed, the wear degree correction coefficient of the contralateral homonym tooth is constructed, and then the contralateral homonym tooth of the missing tooth is corrected, and the missing tooth shape reconstruction is carried out based on the corrected contralateral homonym tooth. The present application corrects the contralateral homonym tooth of the missing tooth, so that the missing tooth shape reconstruction is more consistent with the dynamic coordination of masticatory movement.

A device is provided that enables the continuous and unobstructed sampling of CO2 expired by a patient and administration of O2 to said patient while at the same time allowing surgery or instrumentation or access of the oral cavity and related areas of said patient to proceed unobstructed.