244results 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.

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 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 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.

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 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.

The goal is to provide dental treatment indexes and dental treatment sets that enable high-quality tooth restoration regardless of the practitioner's skill level, while also being manufactured with high efficiency. [Solution] A second dental treatment index 20 has a shape that can be superimposed on a first dental treatment index 10, which is made of a light-transmitting material and integrally molded by a 3D printer, and is made of a light-transmitting material that is harder than the light-transmitting material that forms the first dental treatment index 10, and is integrally molded by a 3D printer, and has multiple irregularities on its inner surface.

The present disclosure concerns a dental tool or instrument (100) comprising a working part (110) made of a nitinol alloy. The nitinol alloy of the working part (110) is transitionable from an R-phase alloy state when heated above a transition temperature. The working part (110) comprises at least a first portion (111) having a first transition temperature (TT1) and at least a second portion (112) having a second transition temperature (TT2). The first transition temperature (TT1) is a temperature lower than a working temperature such that, at working temperature, the first portion (111) is in the austenitic phase. The second transition temperature (TT2) is a temperature greater than the working temperature such that, at working temperature, the second portion (112) is in the R- phase. The present disclosure further concerns a method of manufacturing the dental tool or instrument.

The utility model provides a multifunctional root canal file counter which comprises a supporting box and a fixed magnet ring, metal bearings are embedded in the front end and the rear end of the supporting box respectively, connecting shafts are installed in the two metal bearings respectively, swing rods are longitudinally welded to the lower ends of the outer sides of the two connecting shafts respectively, and a cover is horizontally welded between the two swing rods. A plurality of fixed bearings are embedded into the upper end of the supporting box, and a plurality of fixed magnet rings are fixedly adhered to the upper end of the supporting box through epoxy resin, so that the problems that a traditional method generally lacks counting of the number of times of use of a single instrument, and an operator cannot conveniently take and store the instrument quickly in actual operation are solved; each position for placing the root canal file has an independent counting function, a light prompt can be given to a user when the preset number of times is reached, the taking and placing process is simple and rapid, the device adapts to a fast-paced working environment, the cover can be used as a protective cover and can also be turned over to be used as a working table support, and reloading after pretreatment is facilitated.

This invention relates to an agricultural coupler and an agricultural implement assembly. The agricultural coupler is used for an agricultural implement assembly having a flexible tine and a depth or press wheel. The agricultural implement assembly may be used as an attachment to an existing seed sowing implement or may be used in conjunction with an agricultural dispensing unit described in co-pending International Patent Application No. PCT / IB2023 / 061091.

The utility model provides a safe and easy-to-operate dental fossa and fissure sealing device, which relates to the technical field of dentistry, and comprises a straight handpiece, a stabilizing device and a fixing device, one end of the straight handpiece is fixedly connected with a handpiece, the end face of the handpiece is provided with a brush head, and the brush head is provided with a handle. The stabilizing device is installed on the arc surface of the straight handpiece through the fixing device, the stabilizing device keeps stable limiting on the hand holding a handle of the straight handpiece, the stabilizing device comprises a fixing ring, the fixing ring is arranged on the arc surface of the straight handpiece in a sleeving mode, the inner wall of the fixing ring is fixedly connected with a reinforcing ring, the reinforcing ring is a rubber ring, and the fixing ring is fixedly connected with the fixing ring. When the dental fossa and sulcus closed treatment is carried out, the stability between an operator and the straight handpiece can be better ensured, fingers are not easy to loosen, collision injury to the interior of an oral cavity caused by shaking of the straight handpiece is avoided, a doctor can operate more conveniently and lastingly, fine adjustment can be more accurate, and the operation efficiency is improved. And the use effect and the practicability of the straight mobile phone are improved.

A natural and sustainable material is derived from the nut of the tagua palm tree that may be fashioned into devices for humans and animals. A pulverized and reconstituted material is disclosed herein that is also treated with a low temperature atmospheric plasma treatment. In an embodiment, a biocompatible carrier gas is ionized to form a biocompatible atmospheric plasma stream. Material, such as nano-scale powdered hydroxyapatite, is introduced into the plasma stream, which is then applied to the natural nut material.

A method of installing a fiber post for a post and core dental restoration uses a fiber post system which has a plurality of fiber posts having at least two distinct diameters for the fiber posts and at least two preformed fiber post lengths for the fiber posts. Each fiber post containing a visible depth marker indicative of where the post should be placed above and below root orifice, whereby the fiber post selected is configured to be based upon the root length of the specific tooth obturated, yielding proper post space preparation apically for cementation and coronally for foundational core build up. The resulting implanted post eliminates or minimizes post manipulation during tooth preparation to create a mono-block of core material around the post during cementation and build up resulting in no disruption of either bond during preparation.

The application discloses an expanding root canal filling medical device combination based on a dental root tip biological seal and application. The medical device combination comprises a sealant combination and a titanium material root canal plug tip, the sealant combination is composed of liquid agent, A component powder and B component powder which are mutually isolated before use, the A component powder comprises 75-95% of tricalcium silicate and 5-25% of beta tricalcium phosphate, the B component powder comprises 45-55% of nano zirconium dioxide, 44.7-52% of calcium hydroxide and 0.3-3% of calcium oxide; a root canal section surface of the root canal plug tip is provided with a horizontal screw thread, a screw thread groove of the screw thread is used for filling the prepared sealant, and a crown section surface is provided with a retaining groove section. The medical device combination solves the problems of root canal treatment failure or poor long-term curative effect caused by volume shrinkage after filling of the existing sealant and gutta-percha tip, and can realize high safety, high biocompatibility, high quality and high density root canal filling.

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.

The invention relates to a covering device (100) for covering the lips and corners of the mouth of a patient during treatment, comprising an elastic lip opening element (101), an elastic vestibular opening element (103) and a film section (105) connecting the opening elements, the film section having a surface (107) made of a polyolefin.

The utility model discloses a forming sheet for filling adjacent dental caries, and relates to the technical field of dental caries filling. The device comprises an adjacent face tooth filling unit arranged on one side of teeth, and the adjacent face tooth filling unit comprises a forming piece, an injection hole and a clamping strip; the injection hole is formed in the molding sheet, and the high-flowability resin is injected into the teeth through the injection hole to fill the teeth; the clamping strip is arranged on one side of the forming piece, the forming piece is clamped between the clamping strip and the teeth, and the clamping strip is used for clamping and fixing the forming piece after the forming piece is installed. According to the device, the injection hole is formed in the forming piece, so that the requirement for the adjacent space is reduced during material filling, tooth filling is facilitated, through combined use of the clamping strip and the clamping strip, on the premise that sealing of the injection hole is guaranteed, the device can be more tightly attached to teeth, the stability of the clamping strip and the clamping strip during use is guaranteed, and the service life of the device is prolonged. The phenomenon that the tooth filling effect is affected due to leakage of the filling material is avoided, and user requirements are met.

The present invention relates to a dental article comprising: an applicator (20) with a compartment (30) having an inner surface (31), a piston assembly (40) movably located in the compartment (30), the piston assembly (40) comprising a piston body (41), a seal A (42) at a forward end of the piston body, the seal A having one or more gaps (43), a seal B (44) at a forward end of the piston body, the seal B having one or more gaps (43), the seal B having one or more gaps (43), and the piston assembly (40) being movably located in the compartment (30). The present invention relates to a device for dispensing dental material, comprising a seal A, a seal B (44) spaced apart from the seal A, a collection reservoir (45) adapted to collect a lubricant composition during dispensing of the dental material, a dispensing section (50) located at a distal end of the compartment, a lubricant composition (60) located on the inner surface of the compartment, and a dental material (70) located at a distal end of the compartment. The dental material (70) is in contact with the lubricant composition in the compartment.

The present invention relates to a new method for bonding dental prostheses that suppresses excessive polymerization shrinkage of the photopolymerizable adhesive, prevents bonding defects of dental prostheses, and enables reliable treatment with high patient satisfaction. The method includes the steps of: applying a photopolymerizable adhesive to the inner surface of the dental prosthesis; placing the dental prosthesis on the tooth to be treated and attaching it to the tooth under pressure; removing excess photopolymerizable adhesive from the edges of the dental prosthesis with a brush; and curing the photopolymerizable adhesive by irradiating it with visible light. The curing step includes a primary curing process in which the central portion of the dental prosthesis is irradiated for a first hour with visible light in the active wavelength band range of the photopolymerization initiator contained in the photopolymerizable adhesive, gradually increasing the intensity from a first to a second level; and a secondary curing process in which the central portion of the dental prosthesis is irradiated for a second hour with visible light in the active wavelength band range of the photopolymerization initiator contained in the photopolymerizable adhesive at a third level.

A dental procedure performed on target tissue without anesthetic or anesthesia including preconditioning the target tissue using a laser device constructed to produce light in a wavelength range of 2750 nm to 11500 nm, to provide an energy fluence in a range of 50 J / cm2 to 100 J / cm2, and to operate in a free running pulsed mode providing 60 μm bursts at a frequency of at least 50 Hz. Preconditioning includes selecting a combination of average optical output power and preconditioning time to administer low level laser therapy. The laser device is adjusted to deliver light through the light guide of the laser device at the selected average optical output power. Light delivered through the light guide of the adjusted laser device is directed toward the target tissue for the selected preconditioning time providing analgesia to the target tissue. Oral tissue is removed from the preconditioned target tissue during analgesia.

Various implementations of removable dental appliances, including multi-unit veneers to improve the aesthetics and function of a smile of a dental customer, related systems, and computer programs and methods for the design and manufacturing of removable dental appliances are disclosed. For example, surface tension and capillary action between the patient's or customer's teeth, saliva and surfaces of the removable dental appliance are utilized to substantially hold the appliance in place, once inserted. For example, a clip-on fit involving exclusively vestibular-facing undercuts between the patient's or customer's teeth are utilized to substantially hold the appliance in place, once inserted. The appliance is manufactured by additive or subtractive manufacturing technologies and may gain stability from a resin-based coating.