331results about "Teeth capping" patented technology

A stop for use with an electric drill bit, the stop having at least one threaded sleeve for positioning the stop relative to a surface into which the drill bit will extend. The stop may have both an inner and an outer sleeve. The sleeves are mounted coaxially, one inside the other about the drill bit. One of the sleeves, preferably the inner sleeve, provides coarse adjustment of the position of the shoulder relative to the tip of the bit, while the other, preferably the outer sleeve, provides fine adjustment of the position of the shoulder relative to the top of the bit.

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.

An apparatus for treating a tooth or gum tissue is disclosed. The apparatus can include a tooth cap for supporting a treatment device during a treatment procedure. The tooth cap can comprise a platform to support the treatment device. The platform can include an access port to provide a portion of the treatment device with access to a treatment region of the tooth or gum tissue. The tooth cap can also include a wall coupled with and angled relative to the platform, the wall configured to be attached to the tooth or gum tissue during treatment.

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.

Devices, systems and methods for dental arch expansion. A polymeric shell including teeth receiving cavities may be shaped to impart an arch expansion force onto a first tooth of one or more teeth to move the one or more teeth from a first position a first distance from a midline of the arch to a second position a second distance from the midline of the arch, the second distance being greater than the first distance. An occlusal feature extending outward from an occlusal wall of a tooth receiving cavity may be configured to contact an outer occlusal surface of an opposing appliance to impart an anti-tipping force onto the first tooth. The anti-tipping force may be of a magnitude and direction to counteract a tipping moment generated at least in part due to the arch expansion force.

Wire attachment dental appliances. A shell may be shaped to receive teeth of a dentition. The shell may include an attachment material reservoir that is configured to accept an attachment material therein. A wire attachment member may be configured to be secured to the shell. The attachment material reservoir and the wire attachment member may be aligned along an arch line of the shell in a manner that allows a wire to simultaneously pass through the attachment material reservoir and engage with the wire attachment member.

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.

A needle assembly for an endodontic apparatus, comprising: a head for removably coupling the needle assembly to a handpiece; and a needle extending from the head at a proximal end to a distal tip, a lumen of the needle extending to an opening at the tip to deliver fluid into a root canal, wherein the needle tip is positionable within a portion of the root canal; and the lumen has a diameter to enable fluid to be delivered at a delivery pressure in excess of a threshold cavitation pressure, wherein delivery of fluid through the needle at a delivery pressure in excess of a threshold cavitation pressure into the root canal generates a backflow in the root canal that facilitates forming of a cloud of inertial cavitation within the fluid in the root canal forward of the needle tip.

Method for electronically indicating a concentration of an irrigation solution in a root canal (RC) of a tooth (T), using a device able to be electrically connected to an endodontic instrument engaged in the canal and to a labial electrode, and including a screen to display the progression of the instrument in said canal relatively to a critical apical point of reference such as the cemento-dentinal junction (CDJ), said device being furthermore able to measure, in the vicinity of said point of reference, by conductimetry, a concentration of an electrolyte irrigation solution injected into the root canal.

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.

In some embodiments, the distal end of an endodontic brush unevenly (e.g., not along a line perpendicular to the axis of the brush). Optionally, the uneven strands will contact the walls of a channel more evenly and / or will have an increased stirring effect than an evenly cut end may be cut using an abrasive cutter (e.g., a grinding wheel) and / or a laser and / or an electrical discharge machining (EDM) cutter. Optionally, a grinding wheel will rotate opposite the winding of the wire. Optionally, a rounded end may be formed on the wire. In some embodiment, a coupling between an endodontic brush and a handpiece is configured to be held rotationally to the handpiece by friction and / or locked longitudinally into the handpiece by an interference element. In some embodiments, an edge of the brush is roughened. Optionally, the brush may be bent and / or eccentric.

A mandibular advancement device with enhanced stability, including an upper tray assembly formed by an upper moldable component and an upper bracket, and a lower tray assembly formed by a lower moldable component and a lower bracket. The upper bracket and the lower bracket each extend a front wall from their front side edges near the labial side, while at least the lower bracket extends a rear wall along the median sagittal plane from the rear side edge near the lingual side. The stability is achieved by inclining the front wall of at least the upper bracket towards the lingual side. The rear wall of the lower bracket works in conjunction with the front wall to clamp the lower dental arch. Additionally, the stability feature includes a molar clamping section, further enhancing the overall stability of the mandibular advancement device.

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 and method treating Trismus in a patient. The device is configured to be located completely within the mouth of the patient and includes a pair of teeth-receiving plates and at least one adjustable biasing assembly. The adjustable biasing assembly pivotably interconnects the teeth-receiving plates and is adjustable to establish a desired spacing between anterior portions of the teeth-receiving plates, and also provides a force to the teeth-receiving plates tending to bias the anterior portions of those plates to the desired spacing.

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.

An apparatus for heating and agitating an irrigant inside a tooth's root canal includes a first portion and a second portion. The first portion is sized and configured to extend into the tooth's root canal via a hole in the tooth's dentin, and is operable to heat and physically agitate an irrigant disposed in a tooth's root canal. The second portion is sized and configured to move the first portion while the first portion extends into the tooth's root canal, and is operable to move the first portion in response to a driving force that the second portion receives. With the ability of the device's first portion to heat and agitate an antiseptic irrigant disposed inside a tooth's inner chamber, one can use the activator to simultaneously heat and agitate the irrigant.

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.