151 results about "Luting agent" patented technology

A dental composite material that comprises a polyhedral oligomeric silsesquioxane is disclosed. The dental composite material is useful for a variety of dental materials, treatments, and restorative functions including crown and bridge materials, fillings, adhesives, sealants, luting agents or cements, denture base materials, orthodontic materials and sealants, and other dental restorative materials.

This invention relates to a fiber reinforced graphite rubber plate utilized at pipeline flange and its preparation. It mainly solves the flaws of present techniques using rubber as luting agent and existing low temperature property. It can not completely substitute asbestos gaskets use condition, so it limits the serviceable range of this material; And it also solves the technique problems, such as: graphite content is low, particle is fairly coarse, working condition is narrow, especially the bearing temperature range is fairly small and so on. This invention composition; and quality percentage are: rubber 10-20%, flexibility graphite 55-75%, strengthened fiber 3-10%, stuffing 5-25%, the rest is sulfurizing accessory ingredient. Its preparation: progress heat treatment for graphite piece, after cooling and compact progress shattering, orderly add flexibility graphite powder, operation agent, sulfurizing accessory ingredient, strengthened fiber, sol rubber to mix; use forming piece equipment, utilize relative rotation of roller tube to carry out forming piece and producing piece; utilize flat plate sulfurizing machine to sulfurize half-finished product, yield the invented product.

Provided is a fishing line guiding device that is difficult to move relative to a fishing rod. A ring holding part (7) of the fishing line guiding device (3) is provided with a gap part (17). When the surface of a foot part is coated with adhesive agent (liquid), the adhesive agent passes through the gap part to reach the root edge and flows from the edge to drop to the peripheral surface of a rod (s) to cure, such that the foot part (5) is firmly fixed on the rod body. On the other hand, the gap part has a capillary phenomenon, the adhesive agent (liquid) flowed into a clearance between the gap parts to rise from the clearance, further to rise along a jogged dent (15) arranged on the rod tail side and a jogged dent (21) arranged on the rod head side. Thereby, two sides of the jogged dent are filled with the cured adhesive agent (A), even if a holding frame of the ring holding part has a gap part, a conductor ring (R) also can be firmly fixed on the ring holding part without loss of ring holding strength. It is possible to prevent salt from remaining in the jogged dents and try for light weight.

An integral, one-piece silanated particle impregnated gutta percha core/cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core/cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core/cone, without the need for a separate carrier core to install the tapered gutta percha core/cone within the root canal. Additionally, the tapered body of the core/cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core/cone. Additionally, the head of the core/cone can be gripped by a delivery vehicle clasp.

An integral, one-piece silanated particle impregnated gutta percha core/cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core/cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core/cone, without the need for a separate carrier core to install the tapered gutta percha core/cone within the root canal. Additionally, the tapered body of the core/cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core/cone. Additionally, the head of the core/cone can be gripped by a delivery vehicle clasp.

The present disclosure relates to an orthodontic system and a method of using the same to perform orthodontics. In one example, an orthodontic system is presented. The orthodontic system includes a tube having at least one sidewall and two opening ends, and a luting agent. The luting agent is disposed on at least a portion of one or more of the at least one sidewall of the tube and a portion of a surface of a tooth onto which the tube is directly attached or adhered. The two opening ends of the tube remain substantially open so that a wire can move along the tube.

The invention discloses a novel squeeze roller type roller surface structure, which comprises a roller sleeve and stud nails, wherein stud holes and grooves are staggered and distributed on the outer surface of the roller sleeve; the stud nails are arranged in the stud holes by adhesive in a clearance fit mode; and the upper end surfaces of the stud nails are flush or lower than the outer surface of the roller sleeve. The squeeze roller type roller surface structure is characterized in that spherical pit or semi-spherical pit structures which are distributed on the whole roller surface and are staggered and arranged. When equipment is in load operation, one layer of self-generating material pad is generated on the surface of the roller sleeve. The material pad is used for bearing abrasion and impact by ultrahard objects, such as iron blocks and the like. The material pad of the structure has a high forming speed so as to improve the abrasion resistance of the roller surface, prolong the service life of the roller surface and improve the hard object impact resistance of the roller surface stud nails.

The invention provides a full-process digital manufacturing method of complete dentures. The full-process digital manufacturing method comprises the following steps: acquiring an STL file of three-dimensional data by intraoral scanning of a patient with complete edentulous jaw; putting the median occlusal tray into the mouth, recording the morphology of the mucous membrane surface of the upper jawand the lower jaw and the relative position relation of the upper jaw to the lower jaw, obtaining an STL file of three-dimensional data of the median occlusal tray by scanning; and obtaining a DICOMfile about spiral CT or CBCT of the edentulous jaw patient wearing the median occlusal tray. The full-process digital manufacturing method of the present invention has the advantages as follows: 1, athree-dimensional space about maxillofacial region of the patient is constructed by fitting four digital files, and the occlusal plane in which the patient tries on the dentures and morphology and position of the anterior teeth are set with reference of the anatomical structure of the maxillofacial region of the patient, thereby improving the try-on effect of the dentures; 2, a final impression scanning and copying technology is utilized to accurately manufacture the morphology of a final denture base; and 3, a base plate and a artificial dentition are obtained by adhering the separately cut resin discs with different colors and high strength through adhesive, thereby achieving high cutting precision, high strength of the resin discs and good wear resistance of the artificial teeth.

The invention provides a phosphate compound having an unsaturated double bond and a metal salt thereof; a dental material containing a phosphate compound having an unsaturated double bond and/or a metal salt thereof; and a dental composition containing a phosphate compound having an unsaturated double bond and/or a metal salt thereof. The phosphate compound of the invention provides a dental material and a dental composition such as a bonding material, adhesive material and a dental luting agent that are highly stable during storage, convenient for handling, and that exhibit higher adhesiveness and bond durability.

The present disclosure relates to an orthodontic system and a method of using the same to perform orthodontics. In one example, an orthodontic system is presented. The orthodontic system includes a tube having at least one sidewall and two opening ends, and a luting agent. The luting agent is disposed on at least a portion of one or more of the at least one sidewall of the tube and a portion of a surface of a tooth onto which the tube is directly attached or adhered. The two opening ends of the tube remain substantially open so that a wire can move along the tube.

This adhesive composition contains an epoxy resin as a main component, and includes an inorganic zwitterion exchanger.

The invention discloses a clamp and a method for testing tensile shear creep of an adhesive by a cross method, and belongs to the field of adhesive shear creep testing. A U-shaped first clamping platewith two J-shaped hook grooves in one end and a rectangular second clamping plate with a J-shaped hook groove in one end are used for forming a clamp, and a crossed sample is effectively fixed in theclamp. According to the invention, a crossed sample can be fixed, a shear creep test is carried out by using a tensile load, and rotation of the test piece caused by traction of the bonding layer iseliminated, so that the shear creep performance of the adhesive is more accurately tested, the clamp can be suitable for test pieces with different bonding layer thicknesses, clamps with different specifications do not need to be prepared, the test cost is reduced, and the test efficiency is improved, and the test efficiency is improved.

The invention discloses an implant upper part repair pre-bonded abutment replica and a preparation method thereof. The implant upper part repair pre-bonded abutment replica comprises an implant upperpart repair body and a pre-bonded abutment replica inserted into the implant upper part repair body; the pre-bonded abutment replica comprises a steel nail and a resin abutment replica formed at one end of the steel nail; the end, fixedly provided with the resin abutment replica, of the steel nail is a fixed end, the end, away from the resin abutment replica, of the steel nail is a clamping end, and a mark is arranged at the clamping end; and the resin abutment replica comprises an embedding part and a sealing part. An abutment in the mouth of a patient can be simulated outside the mouth of the patient through the pre-bonded abutment replica, so that redundant adhesive can be effectively cleaned outside the mouth of the patient, cleaning operation of the adhesive is changed from intraoraloperation to extraoral operation, the tooth wearing time of a doctor is shortened, the mouth opening time and pain of the patient are reduced, a series of complications such as inflammation and feverof the oral cavity of the patient due to the fact that the adhesive is not completely cleaned can be avoided, and the health of the patient is protected.

A flow meter (500) is disclosed that is comprised of a base (552), a driver (D), pick-offs (LPO, RPO), and a flow tube (501) made from a fluoropolymer substance. The base of the flow meter is comprised of a first leg (517) and a second leg (518). The first leg includes a tube opening (502) and an adhesive opening (504) and the second leg includes a tube opening (512) and an adhesive opening (514). The flow tube passes through the tube openings of the first leg and the second leg. The tube opening of the first leg has a diameter slightly larger than the flow tube to create a gap (506) between the tube opening and the flow tube. The adhesive opening of the first leg provides access to the gap so that adhesive may be applied to the flow tube and an inner surface (508) of the tube opening to affix the flow tube to the base. The adhesive opening in the second leg performs the same function.

The invention provides an actuator capable of properly adhering a coil arranged in a coil arrangement hole of a coil holder to the coil holder. In the actuator, a coil (5) is arranged inside a coil arrangement hole (410) that passes through the coil holder (4) in a first direction Z, and a first plate (47) is arranged so as to overlap the coil arrangement hole (410) and a plate section (41) from one side Z1 in the first direction Z. Therefore, after the adhesive is filled into a hollow core part (50) of the coil (5), a second plate (48) is overlapped. The adhesive flows between the coil (5) and the coil holder (4), between the coil (5) and the first plate (47), between the first plate (47) and the coil holder (4), between the coil (5) and the second plate (48), and between the second plate(48) and the coil holder (4). Therefore, when the adhesive is cured, the coil (5), the first plate (47), the second plate (48), and the coil holder (4) are appropriately fixed by the adhesive.

The invention discloses an auxiliary machining method for an aviation thin-wall microstructure part. The auxiliary machining method comprises the following steps: 1) positioning the aviation thin-wallmicrostructure part; 2) respectively applying pressure to two ends of the aviation thin-wall microstructure part by using two micro-diameter needle heads; 3) in the process that the two micro-diameter needle heads are used for applying pressure, the other micro-diameter needle head is used for dipping a trace amount of adhesive, and the trace amount of adhesive is made to make contact with a thin-neck inner base line of the aviation thin-wall microstructure part; 4) removing a vertical high-precision gauge block; 5) keeping the two micro-diameter needle heads to apply pressure to the two endsof the aviation thin-wall micro-structure part all the time until the trace amount of adhesive flows and is cured; and 6) observing the thickness of the trace amount of adhesive by adopting a magnifying lens to ensure that the thickness of the trace amount of adhesive is greater than the thickness of the microstructure, and the like. The machining process for the aviation thin-wall microstructurepart has the obvious auxiliary improvement effect, the operation process is clear, the method is simple and practical, and application and popularization of aviation instrument microstructure part machining are facilitated.

The invention provides a fabricated stair step. U-shaped groove reinforcing ribs are fixed to an L-shaped step surface layer, U-shaped grooves in the kicking face U-shaped groove reinforcing ribs andU-shaped grooves in the tread U-shaped groove reinforcing ribs are installed on T-shaped adjusting pieces, the T-shaped adjusting pieces are installed on fixing devices, and the fixing devices are fixed to a tread and a kicking face of an original stair face through first fixing pieces. The invention relates to a construction method of the fabricated stair step. Fabricated dry operation construction is adopted, the kicking face and the tread of the stair step serve as an integral unit component, traditional wet operation construction is replaced, the construction steps are simplified, the construction period is shortened, the engineering quality is improved through factory standardized production, the loss of cement mortar adhesives and other materials is reduced, pollution sources in theconstruction link are reduced, green and environment-friendly construction is achieved, design standardization, production factorization and construction fabrication of the stair step are achieved, and the construction quality and the construction efficiency are improved.

The invention discloses a broach with honeycomb-like microstructures and a preparation method of the broach, and solves the problems that when existing broaching teeth cut materials difficult to process, the top ends of the teeth are relatively low in heat dissipation speed and serious in friction wear. According to the broach with the honeycomb-like microstructure and the preparation method of the broach, the two broach teeth side faces of each broach tooth in the coarse pull area and the semi-fine pull area are both provided with the honeycomb-like microstructures arranged in a parallelogramwith M rows timing N columns; the honeycomb-like microstructures are provided with composite pits, cylindrical protrusions and silica gel fillers; the cylindrical protrusions are integrally formed with the side surfaces of the broach teeth; each composite pit is composed of a regular hexagonal pit and a regular quadrangular pit which coincide with the central axis; each silica gel filler is injected between the corresponding composite pit and the corresponding cylindrical protrusion; and the bottom of each silica gel filler is bonded with the bottom of the corresponding composite pit througha silica gel hot vulcanization adhesive. The broach with the honeycomb-like microstructure and the preparation method of the broach optimize the heat dissipation and vibration suppression performanceof the broach, and achieves the purposes of protecting the broach, reducing the abrasion of the broach, prolonging the service life of the broach and improving the use efficiency of the broach.

The invention relates to a combined special-shaped cast pipe and a production method thereof, and belongs to a special-shaped centrifugation cast iron pipe and a production method thereof. The technical problems of low precision, low efficiency, high comprehensive price and poor outer surface roughness degree of the existing special-shaped pipe can be mainly solved. The combined special-shaped cast pipe is characterized in that the combined special-shaped cast pipe consists of a bonding part, a bonding agent and a straight pipe, wherein the bonding part is cast and shaped by a sand casting method; the straight pipe is cast and made through centrifugation; the bonding surface of the straight pipe and the bonding matching surface of the bonding part are bonded by bonding agents so that the straight pipe and the bonding parts are connected into a whole. The production method comprises the following steps of a, performing machine processing on the bonding matched surface of the bonding part; b, performing machine processing on the bonding surface of the straight pipe; c, preparing the bonding agents; d, bonding the bonding part and the straight pipe; e, drying the cast pipe.

The invention discloses a digitized detachable nested removable partial denture. The digitized detachable nested removable partial denture is characterized in that a traditional removable partial denture can be disassembled into a crown structure above a gingival edge line and a gingival end structure below the gingival edge line according to different colors of a dental crown and gingival in intraoral whitening aesthetics; and namely, the digitized detachable nested removable partial denture only comprises two parts, the two parts are mutually embedded through negative and positive structures on the anastomotic surfaces of the two parts, and the two denture parts are accurately positioned and are further connected and combined into a whole by adopting an adhesive. According to the scheme for splitting, precisely positioning and connecting the two parts of the digitized denture, the convenience of a digital denture forming technology is fully utilized, and the problems that a traditional removable partial denture is poor in attractiveness, complex in manufacturing procedure, insufficient in machining precision, insufficient in bonding strength and the like are effectively solved.

The invention discloses a ground leveling method adopting a dotting and rib punching system. The tools adopted by the ground dotting and rib punching technology comprise a laser leveling gage, a rib,an ink fountain, a fixed piece, a horizontal rib punching strip and an adhesive. Compared with the traditional mortar dotting and rib punching, the dotting and rib punching technology adopting the fixed piece to support the horizontal rib punching strip is simple and convenient in construction method operation and low in construction technical requirement; the efficiency is higher without waitingfor hardening of mortar; and the personal error is small, the elevation precision is high, a high-precision guide rail is provided for later leveling construction to realize high-precision ground leveling.

The present disclosure relates to an orthodontic system and a method of using the same to perform orthodontics. In one example, an orthodontic system is presented. The orthodontic system includes a tube having at least one sidewall and two opening ends, and a luting agent. The luting agent is disposed on at least a portion of one or more of the at least one sidewall of the tube and a portion of a surface of a tooth onto which the tube is directly attached or adhered. The two opening ends of the tube remain substantially open so that a wire can move along the tube.