181results about "Arch wires" patented technology

The utility model relates to an orthodontic appliance and orthodontic system with traction locking function, which comprises a main body part and a cover body part, the main body part is provided with an arch wire groove, two sides of the arch wire groove form a first working wing and a second working wing, the main body part is provided with an assembling groove, and the assembling groove is used for detachably arranging a traction piece. The traction piece comprises a traction section, a connecting section and an adapting section which are connected in sequence, the adapting section is matched with the main body part, at least part of the connecting section is located in the assembling groove, a locking part is arranged on the connecting section in a protruding mode, and the locking part corresponds to the arch wire groove so as to be used for directly or indirectly limiting the arch wire. Therefore, the first orthodontic appliance does not move relative to the arch wire or moves a small distance, and the orthodontic efficiency can be improved. When the traction function does not need to be used, the whole traction piece can be detached from the assembling groove.

An orthodontic appliance comprises a combination of pre-made and custom elements to provide treatment versatility with minimized costs and time delays. The appliance comprises a pre-made arch member segment elastically deformed to removably attach to coupling units bonded to teeth. The appliance also comprises a connection module to further elastically deform the arch member segment to generate motive forces or to just connect separate arch member segments in variations. In another embodiment the appliance comprises pre-made connectors having one end attached to a tooth and another end elastically deformed to attach to an arch component. The attachment to teeth comprises coupling units bonded to teeth in variations. The arch components, coupling units, and connection modules may be custom made to match surfaces inside the mouth. Motive forces may be generated by the elastic deformation of the arch member segment, connectors, arch component, or connection module to align teeth.

Orthodontic brackets are disclosed. An orthodontic bracket is formed such that the body and mesh portions are formed integrally in one piece, and the tooth-side mounting surface includes bonding elements that have an undercut angle to the mounting surface. The bonding elements can further include geometry to facilitate the spreading of bonding material. In some aspects, the bracket can also comprise elements for wire-mounting and aligner tray interaction. A system and methods of treatment are further disclosed. The bracket can be customized for an individual patient.

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 application belongs to the technical field of oral orthodontic medical instruments, and discloses a system of invisible appliance convertible position rigid anchorage accessory and an assembling method thereof. The embedded rigid anchorage accessory comprises an oral commonly used light-cured resin accessory body and a metal framework integrally embedded in the interior of the accessory body. The metal framework has an anchoring section completely embedded in the accessory body and an anchor-shaped connecting section extending out of the surface of the accessory body. The anchor-shaped connecting section is configured as a barb-shaped or T-shaped structure suitable for accommodating a ligation wire and forming a mechanical lock, and has a bidirectional force control function. The application constructs an absolute anchorage system without relative displacement between teeth and implant anchorage, avoids side effects caused by insufficient anchorage or poor patient cooperation in traditional elastic traction, and only needs to grind off the anchor-shaped connecting section on the surface of the accessory body after the anchorage structure completes the function, so as to become a standard vertical rectangular accessory to play a role.

The utility model discloses an orthodontic molar extension and remote movement device which comprises a pair of fixing blocks used for being fixed on the outer side walls of adjacent molars, the side walls, facing the gum, of the two fixing blocks are jointly connected with an elastic assembly, and the tail end of the elastic assembly is provided with a fixing assembly used for fixing the elastic assembly on the gum. The elastic assembly is a continuous bent metal wire, the metal wire is divided into two sides, the metal wire on each side comprises a fixing block connecting section connected to the side wall of the fixing block, the other end of each fixing block connecting section is connected with an elastic bent section, the other end of each elastic bent section is connected with a gum connecting section, and one ends of the gum connecting sections on the two sides are jointly connected with a lantern ring. According to the utility model, the stress supporting point of the extension and remote movement molar is adjusted to the gum, the adjacent molar is not influenced, the two molar can be adjusted at one time, and the orthodontic time can be greatly shortened and the orthodontic efficiency can be improved when the orthodontic appliance is combined with an invisible orthodontic appliance for common use.

The utility model relates to a self-locking bracket which comprises a bracket body, a locking plate, a lock cylinder and a lantern ring, an arch wire groove is formed in the bracket body, a first working wing and a second working wing are arranged on the two opposite sides of the arch wire groove, the locking plate is arranged on the second working wing in a sliding mode, a locking groove is formed in the bottom face of the locking plate, and a mounting hole is formed in the second working wing. The lantern ring is at least partially or completely contained in the mounting hole and does not stretch into the locking groove of the locking piece, the lock cylinder is columnar, one end of the lock cylinder is arranged in the lantern ring, and the other end of the lock cylinder protrudes out of the lantern ring and is arranged in the locking groove of the locking piece. Compared with a traditional scheme, the lock cylinder is additionally sleeved with the lantern ring, the sum of the outer diameter size of the lantern ring and the outer diameter size of the lock cylinder is larger than the outer diameter size of an independent lock cylinder, the size of the installation hole can be designed to be larger, and the installation hole can be formed in an injection molding mode or a direct drilling mode. Therefore, the difficulty of forming the mounting hole in the second working wing can be effectively reduced, and the mass production efficiency is further improved.

The invention discloses a flip cover self-ligating bracket, which belongs to the technical field of orthodontic treatment, and comprises a bracket body, a flip cover and a pin shaft, the bracket body is provided with a bottom plate, a groove and a first buckle part, the flip cover is provided with a second buckle part matched with the first buckle part, and the bracket body and the flip cover are respectively provided with a hinge hole. And the pin shaft is arranged in the two hinging holes in a penetrating manner, so that the turning cover can rotate relative to the bracket body. In a locking state, the first buckling part and the second buckling part are mechanically matched and locked, the turning cover is limited to rotate, and the groove is closed; in the unlocking state, external force drives the buckle to be separated through the unlocking groove, the turning cover rotates to be opened, and the groove is completely exposed. The bracket adopts a flip-type structure to replace a slide rail design of an existing sliding cover type bracket, so that the size is greatly reduced, foreign body sensation of a wearer is reduced, the comfort level is improved, meanwhile, the problem that a switch lock is unstable during chewing is avoided, stable constraint of an arch wire is ensured, the correction effect is guaranteed, and the bracket is convenient to operate and adapts to clinical orthodontic treatment requirements.

The utility model discloses a storage device for storing orthodontic brackets, which belongs to the technical field of tooth orthodontics and comprises a shell, a taking opening is arranged on one side of the upper end of the shell, a placing bin is fixedly mounted on the other side of the upper end of the shell, a conveying belt is mounted in the shell, and shifting plates are mounted on the conveying belt in an array manner. A power supply control bin is fixedly installed on one side of the outer portion of the shell, a control panel is fixedly installed at the upper end of the power supply control bin, a cover plate is hinged to the upper end of the shell, a laser range finder is fixedly installed at one end of the inner side of the cover plate, through the conveying belt and the shifting plate, brackets can be conveyed to the taking opening conveniently, taking is convenient, and through the laser range finder, the brackets can be taken conveniently. When no bracket exists between the shifting plates, automatic conveying is carried out, the use convenience effect is improved, the brackets are located in a sealed space during storage through the hinged cover plates, auxiliary illumination is carried out during use, the conveying condition of the brackets is detected, and the brackets of different specifications can be conveniently stored in a classified mode during combination.

The application belongs to the technical field of archwire correction, and provides a nickel-titanium alloy archwire with high elasticity and precise root control and a preparation method thereof. The nickel-titanium alloy archwire with high elasticity and precise root control comprises an archwire body, the archwire body comprises a nickel-titanium alloy base body, Nb and Zr, and the molar ratio of Ni to Ti in the nickel-titanium alloy base body is 50.8:49.251.2:48.8. The application also provides a preparation method of the nickel-titanium alloy archwire with high elasticity and precise root control. The application solves the core problems that the elasticity and strength of the traditional nickel-titanium alloy archwire are difficult to be considered together and the root control precision is insufficient in orthodontic treatment. The elasticity recovery rate of the archwire is greater than or equal to 98%, the yield strength is increased to 850 MPa-950 MPa, and the archwire has differential surface roughness, which can meet the high elasticity demand in the initial alignment stage of teeth and realize the precise control of the tooth root position in the fine adjustment stage, is suitable for the whole period treatment of oral orthodontics, and has extremely high clinical application value.

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.

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 invention relates to the technical field of orthodontic medical instruments, in particular to a dentition tongue side stress application traction device, an anchorage nail of the device can be arranged on the upper jaw palatal side portion of the dentition tongue side, a traction hook can be fixed relative to anterior teeth and extends from the anterior teeth to the dentition tongue side, a guide rod penetrates through a directional catheter located on the dentition tongue side, and the directional catheter is connected with the traction hook. The draw bar is fixedly connected with the draw hook; according to the application, the anchorage nail is arranged on the palatal side part of the upper jaw bone on the dentition tongue side, and the influence of loosening or falling of the anchorage nail on the treatment efficiency is reduced by utilizing the advantage of compact bone in the area; meanwhile, the guide rod penetrates through the directional catheter and is fixedly connected with the traction hook, so that the orthodontic force is strictly applied along the extension direction of the guide rod, and the risk of accidental rotation or inclination of teeth can be reduced; the traction piece is connected with the traction hook and the anchorage nail or is connected with the traction hook and the rear teeth, no additional connecting device needs to be added, the traction piece can be effectively matched with the orthodontic appliance to correct the teeth, the operation process is simplified, and the treatment cost is reduced.

The invention relates to a device for moving an upper molar (M) having a mesiopalatal cusp, said device comprising: - a support (12) attached to the molar (M), - a rod (14) having a first end (14.1) anchored to a bone of the palate or to at least one tooth adjacent to the molar such that, when the device is in place, the rod has a given position relative to the molar (M), - a joint (A1) that rotates between the support (12) and the rod (14), having an axis of rotation (X1) that is stationary relative to said rod (14) and perpendicular to the occlusal plane, said axis of rotation (X1) being arranged close to the mesiopalatal cusp of the molar (M), - a spring for applying a force to the palatal face of said molar, by applying a rotation to said molar (M) about the axis of rotation (X1) such that said molar (M) rotates distally.

The present invention relates to a curable composition comprising a (meth)acrylate not containing a urethane moiety, a urethane (meth)acrylate, a photoinitiator, and discrete filler particles surface-treated with a silane surface treatment agent selected from a silane surface treatment agent having an average particle size in the range of 10 to 40 nm and containing a (meth)acrylate moiety, a silane surface treatment agent not containing a (meth)acrylate moiety, and a mixture of both, wherein the discrete filler particles are present in an amount of 20% by weight or more, the curable composition further contains an additive, and the curable composition does not contain, either alone or in combination, aggregates of nano-sized particles, agglomerates of nano-sized particles, and fumed silica, each in an amount of 2% by weight or more, and the weight % is based on the curable composition.

Provided is a zirconia sintered body with which both transparency and fracture toughness value can be achieved at high levels and which can be easily manufactured even by pressureless sintering. In this sintered body, the percentage content of Y2O3 in the whole composition is 1.7-2.9 mol%, the area average particle diameter of zirconia crystal particles is 0.6-1.1 μm, the area ratio of a first region composed of zirconia crystal particles having a particle diameter of 0.1 or more and less than 0.8 μm is 10-80%, the area ratio of a second region composed of zirconia crystal particles having a particle diameter of 0.8-3.2 μm is 20-90%, the average Y2O3 concentration C2 of zirconia crystal particles forming the second region is 2.0-3.2 mol%, the average Y2O3 concentration C1 of zirconia crystal particles forming the first region is 1.7-2.3 mol%, and when the difference in Y2O3 concentration is defined as ΔC≡C2-C1, the ΔC / C2 value is 0.1-0.5, the fracture toughness value of the sintered body measured by the IF method is 10.5 MPa·m0.5 or more, and the total light transmittance of the sintered body is 40% or more.

The utility model relates to a self-locking orthodontic appliance and orthodontic system.The self-locking orthodontic appliance comprises a bottom plate, a main body and a cover body, a first groove is formed in the first end of the main body, the first groove is adjacent to the cover body under the condition that an arch wire groove is closed by the cover body, and a second groove is formed in the position, close to the first groove, of the top of the cover body; the second groove is communicated with the first groove, and the side wall of the second groove is an inclined plane and / or a straight plane and / or an arc surface. Therefore, no offset exists at the connecting position of the cover body and the first groove, the end face, facing the first groove, of the cover body cannot form a stress face, and a patient is not prone to frequently opening / closing the cover body by himself or herself without the help of a special opening tool. Furthermore, the service life of the cover body can be ensured, and the cover body is prevented from beforehand failure.

The invention is applied to the technical field of orthodontics, and discloses an orthodontic traction stress testing device which comprises a fixing seat, a fixing flange is fixedly arranged on the outer side surface of the fixing seat, a semi-ring is fixedly arranged on the upper surface of the fixing seat, and a mounting groove is formed in the upper surface of the semi-ring. A sliding stress sliding block is installed at the upper end of the semi-ring, and a tooth die is fixedly arranged at the upper end of the stress sliding block. According to the orthodontic traction stress testing device, a driving motor drives a driving gear to rotate, the driving gear is meshed with connecting teeth on a movable adjusting gear ring, so that the movable adjusting gear ring rotates in a central mounting cavity, and at the moment, a limiting adjusting rod is driven to rotate through meshing of an adjusting gear and the connecting teeth; therefore, the degree that the pressure plate compresses the pressure spring is changed, the purpose of changing the supporting force of the stress sliding block and the tooth die is achieved, and the strength of the traction force and the counter-acting force of the arch wire is changed.

The utility model relates to orthodontic technical field, specifically disclose a kind of round three-wing double-silicon orthodontic device, comprising: base, the base has the bottom plate for being fixedly connected with tooth surface, the bottom plate upper surface is equipped with reticular retention structure;Bracket body, fixedly set in the top of the base, the top of the bracket body two sides symmetrically is equipped with the guide slide rail extending along vertical direction;Bracket door, slidingly set in the top of the bracket body, its inboard is equipped with the sliding slot matched with the guide slide rail, so that the bracket door can slide along buccal lingual direction relative bracket body;The utility model is through the self-adapting channel design of main bracket groove along dental arch curvature, cooperate with the memory alloy wire embedded in secondary bracket groove, can produce dynamic deformation pressure under oral temperature, collaboratively form three-dimensional controllable correction force system, avoid the problem of tooth root resorption or tilt deviation caused by traditional single-axis correction.

The utility model discloses a molar mesial movement auxiliary device which comprises a main arch wire, a plurality of orthodontic brackets, an auxiliary arch wire, a ligature wire and an anchorage nail, the main arch wire penetrates through the orthodontic brackets and is fixed with the orthodontic brackets, two question mark hooks of the auxiliary arch wire are sleeved on the main arch wire, and the ligature wire is connected with the anchorage nail. The auxiliary arch wire is further provided with two small circles formed by bending, the small circle in the distal direction is rigidly connected to an anchorage nail planted on the alveolar bone through a fixing ligature wire, and the other small circle is free. According to the utility model, a stable rectangular structure can be formed, after force application, interference caused by lip and cheek movement or feeding is avoided, displacement is avoided, foreign body sensation is reduced, the bad effect of distal movement of anterior teeth and premolars can be avoided, friction force of tooth movement is not increased, and meanwhile, the structure is simple and convenient. And when the molars move forwards, the lip inclination acting force on the anterior teeth is also reduced.

The application discloses a double-cover-plate dental orthodontic self-locking bracket, characterized in that the bracket further comprises a lock arranged on the bracket body and the cover plates and used for limiting the positions of the cover plates; the cover plates are cover plate one and cover plate two which are slidably arranged on the bracket body. The application sets the top of the double cover plates into a smooth arc shape, so that the bracket is smooth and round as a whole, the patients have a more suitable experience, and the side edges of the bracket can not stimulate the oral cavity and cause oral ulcer. The double cover plates are arranged, so that when the cover plates are opened, the two cover plates move to the two sides at the same time, the opening and closing stroke of the double cover plates is reduced by half compared with the single cover plate, the structure is compact, the protruding part is not too long when the cover plates are opened, the oral cavity is not uncomfortable, the moving stroke of the double cover plates is shortened, the disengagement length of the double cover plates from the guide rail is reduced, and the work is more stable.

The utility model provides an orthodontic bracket which comprises a bottom plate, a fixing block is arranged on the bottom plate, the fixing block comprises an upper wing and a lower wing, a sliding groove is formed in the top surface of the upper wing in a penetrating mode, a lock cover is connected in the sliding groove in a sliding mode, a first groove is formed in the sliding groove, and the first groove is formed in the vertical inner wall of the side, close to the bottom plate, in the sliding groove. A through hole is formed in the position, corresponding to the first groove, of the lock cover, a shaft wire is arranged in the through hole, one end of the shaft wire is located in the first groove, a limiting protruding block is arranged on the vertical inner wall of one side of the first groove and divides the first groove into two symmetrical containing grooves, and the shaft wire is made of deformable materials. The first groove with the limiting bump in the sliding chute is matched with the deformable shaft wire, so that the shaft wire is adjusted between the two placing grooves and is blocked and fixed by the limiting bump when the lock cover is opened and closed, stress concentration of a traditional sliding rail is avoided, the risk that the lock cover falls off is reduced, and stable transmission and effect of correction force are guaranteed.

An orthodontic system for a phased hybrid orthodontic method includes a level-and-align-dentition aligner unit, a closing-teeth-gap brace unit and a detailing-alignment-and-bite-positioning aligner unit. The level-and-align-dentition aligner unit is configured to be placed on an initial dentition so as to obtain a modified dentition, and a material of the level-and-align-dentition aligner unit includes a thermoplastic polymer. The closing-teeth-gap brace unit is configured to be fixed on the modified dentition so as to obtain a closed-teeth-gap dentition, and the closing-teeth-gap brace unit includes a first metal brace, two second metal braces and two closing members. Each of the two closing members includes a first end, a spring structure, and a second end. The detailing-alignment-and-bite-positioning aligner unit is configured to be placed on the closed-teeth-gap dentition so as to obtain a fixed-form dentition, and a material of the detailing-alignment-and-bite-positioning aligner unit includes a thermoplastic polymer.

The utility model relates to a self-locking orthodontic appliance and orthodontic system.The self-locking orthodontic appliance comprises a bottom plate, a main body and a cover body, due to the fact that an opening groove is formed in the first end of the main body, the opening groove is adjacent to the cover body under the condition that an arch wire groove is closed by the cover body, an arc cutting surface is formed on the top of the cover body and extends to the end face, and the opening groove is formed in the end face. The portion, close to the end face, of the arc cutting face is roughly flush with the highest position, adjacent to the opening groove, of the first end, and the height or the height is not larger than 0.14 mm, so that no offset or small offset exists at the connecting position of the cover body and the opening groove, the end face, facing the opening groove, of the cover body does not form a stress face, and therefore the cover body is not prone to deformation. A patient is not easy to open / close the cover body frequently by himself without the help of a special opening tool. Furthermore, the service life of the cover body can be ensured, and the cover body is prevented from beforehand failure.

An orthodontic bracket and method for treating a malocclusion. The orthodontic bracket includes a bracket base for contacting a surface of a patient's tooth, which can be removed at the end of an orthodontic treatment. The orthodontic bracket further includes a bracket member which can engage with an archwire within the bracket slot, for providing first, second and third order movements to a malpositioned tooth for correcting its orientation to a neutral position. The base member and the bracket member are connected so as to allow for pivotable movement, which provides for precise control over the torque third order movement of a tooth, by modulating the torque.