37 results about "Permlastic" patented technology

An improved dental impression tray system provides a way to accommodate multiple arch sizes. The tray is adjustable and has an anterior section with two distal ends and a posterior section with two distal ends. The two sections are connected together at their distal ends. A mesh membrane extends between the sections to maintain the impression material. The ends of the posterior section include a plurality of vertical pins and a vertical opening is located adjacent each distal end of said anterior section. To adjust the size of the tray, the distal ends of the anterior section can be disconnected from said distal ends of the posterior section and then reconnected by inserting the pins into the opening. Further size adjustments can be made by removing additional pins and inserting the next remaining pins into the openings.

The utility model belongs to the technical field of dentistry, and particularly relates to an automatic dental alginate impression material distributing device which comprises a shell, a weighing sensor is fixedly connected to the bottom of the inner wall of the shell, two positioning blocks are fixedly connected to the top of the weighing sensor, a tray is fixedly connected to the tops of the positioning blocks, and the tray is fixedly connected to the bottom of the shell. A button is fixedly connected to the bottom of the tray, a buzzer is fixedly connected to the top of the weighing sensor, a detachable plate is clamped to the side face of the shell, a pretreatment device used for crushing large materials in advance is arranged at the top of the shell, and the pretreatment device comprises a pretreatment box. The pretreatment box penetrates through and is fixedly connected to the top of the shell, and a rotating shaft is rotationally connected to the top of the inner wall of the pretreatment box. The problems that large materials cannot be crushed, a discharge port can be blocked, manual intervention is needed for cleaning and screening, time is wasted, and the material distribution efficiency is low are solved.

The utility model relates to the technical field of dental implants, and discloses a dental implant mold taking device which comprises a tray main body, extension plates are connected in the tray main body in a sliding manner, the extension plates are symmetrically distributed, a pressing groove is formed in one side of each extension plate, an elastic spring is fixedly connected in each pressing groove, and the elastic springs are fixedly connected in the tray main body. The two sides of the tray body are each provided with a plurality of pop-up openings, one side of each elastic spring is fixedly connected with a pressing block, and the interiors of the pressing grooves and the pop-up openings are slidably connected with the pressing blocks. According to the dental implant mold taking device, through the arrangement that the size of the tray main body can be conveniently adjusted, the tray main body can be suitable for more gingiva with different sizes during use, so that the tray main body is more accurate during dental implant mold taking of a patient, and uniform distribution of an impression material can be ensured; therefore, the accuracy and the efficiency during dental implant mold taking are effectively improved.

The utility model relates to the technical field of dental medical treatment, and discloses a dental tray which comprises a rigid plastic tray, a demolding mechanism and a clamping mechanism. According to the dental tray, a slidable and detachable mechanism is designed so that the bottom plate can be separated from the rigid plastic tray, impression materials solidified on the bottom plate can be separated from the tray by rotating the threaded rod, and the process comprises the steps that when the threaded rod rotates, the guide blocks move along the guide rails; the bottom plate is pushed to gradually slide out of the mounting groove formed in the inner wall of the tray, so that materials subjected to impression are taken out together, a threaded rod locking mechanism and the guide supporting effect of the mounting groove are designed, the situation that the materials displace in the impression process is effectively prevented, in addition, the tray is further specially provided with a clamping mechanism, and the clamping mechanism is convenient to use. According to the tray, the guide blocks and the bottom plate can be quickly disassembled and assembled, so that the bottom plate is replaceable, smooth demolding is ensured, and the practicability and convenience of the tray are improved.

The invention discloses an elastomer impression material as well as a preparation method and application thereof, and relates to the technical field of impression materials. The elastomer impression material comprises a primary impression and a light body, wherein the primary impression and the light body respectively comprise a polysiloxane compound, hydrogen-containing silicone oil, a catalyst, a filler, a pigment and a fluorescent pigment. The marking efficiency of the light body in the indicating process is improved through cooperation of the pigment and the fluorescent pigment, the marking face is mainly used for marking a large continuous face, the light body is mainly used for marking lines such as gingival lines, pit fissures and palate, the color between the light body and the initial impression and the color tone and effect of fluorescent light are combined, and the marking efficiency of the light body in the indicating process is improved. The positions of gingiva, soft tissue, prepared teeth and the like of the teeth and the transition and boundary of the structure are clearly and accurately marked, the machine learning process is accelerated, and the tedious link of manual marking is omitted. The preparation method is simple, convenient and rapid, the oral cavity diagnosis and treatment efficiency and precision are improved, and a more efficient and more accurate solution is provided for application of artificial intelligence in the dental field.

The utility model belongs to the technical field of medical instruments, and particularly relates to a denture cleaning machine. Comprising a shell, an inner barrel, a power device, a cleaning water supply mechanism, a filtering structure and a water outlet pipe, an outer barrel is obliquely arranged on the upper side of the shell, one side of an opening of the outer barrel is higher than the other side, the inner barrel is rotationally arranged in the outer barrel, a plurality of open holes are formed in the lower side of the inner barrel, and one end of the inner barrel penetrates through the outer barrel to be connected with the power device; an opening of the water collecting tank is formed in the lower side of an opening of the outer barrel, the filtering structure is slidably installed in the water collecting tank and communicated with the water collecting tank, the cleaning water supply mechanism is arranged in the outer barrel and supplies water to the inner barrel, the lower portion of the outer barrel is communicated with the water collecting tank, and the bottom of the water collecting tank is connected with a water outlet pipe. The denture is placed in the inner cylinder capable of rotating, the denture is cleaned by water sprayed by the cleaning water supply mechanism, the denture continuously rotates along with the inner cylinder while being cleaned in the inner cylinder, and the denture collides with the inner cylinder in the rotating process, so that impression materials on the denture are completely cleaned.

An impression tray for orthodontics, which is composed of an arc-shaped sheet body capable of fitting with the dental arch space in the labial and buccal sides and the vestibular area, and a handle for supporting the arc-shaped sheet body. The cross-section of the arc-shaped sheet body is C-shaped, and a plurality of holes for temporarily holding impression material are provided on the arc-shaped sheet body. The arc-shaped sheet body has a C-shaped central side surface suitable for covering the lower teeth and the upper teeth simultaneously, and the top wall and the bottom wall of the arc-shaped sheet body are formed in a wavy curved surface manner suitable for the labial and buccal frenum parts. Thus, the impression tray can not only avoid excessive stimulation to the patient, but also is easy to demold, and is convenient for cleaning and disinfection.

The present invention provides a dental tray for making an initial impression of an edentulous jaw, the dental tray comprising: a body provided with a plurality of through holes for fixing an impression material; the handle is connected with the body; wherein the body is similar to an anatomical part in an oral cavity in shape. According to the method, the applicability, the universality and the accuracy of the preparation of the primary impression of most patients with complete toothless teeth can be improved.

The oral cavity impression tray comprises a tray body provided with a tray handle and a tongue-shaped plate, the tray body is provided with a first notch and a second notch which correspond to dentitions on the two sides, and a plurality of blocking strips which are used for blocking impression materials and are of the same structure are arranged on the outer sides of the first notch and the second notch. One side of the first notch is connected with a positive pressure pipe for blowing air to the first notch and the second notch, a first overflow frame and a second overflow frame which are located behind the blocking strip are fixedly arranged on the outer side of the first notch and the outer side of the second notch correspondingly, and one side of the second notch is connected with a negative pressure pipe. The negative pressure pipe is provided with a first suction pipe and a second suction pipe which extend into the first overflow frame and the second overflow frame. According to the utility model, the impression material can be prevented from being mistakenly swallowed and sucked at the throat part, the safety of a patient is ensured, the strong negative pressure formed by ultrahigh adaptation of the tray body and mouth mucosa after the impression material is solidified can be removed, and the tray body is ensured to be smoothly taken out.

The invention provides a dental silicone rubber impression composition, a dental silicone rubber impression material kit and a preparation method and application of the dental silicone rubber impression composition and the dental silicone rubber impression material kit, D50 of reinforcing filler in the impression composition is 5-22 microns, and the particle size distribution of the reinforcing filler in the impression composition meets the conditions that D60-D40 is smaller than or equal to 12 m and D40-D20 is smaller than or equal to 12 m at the same time. The particle size distribution of the reinforcing filler in the impression material is controlled to be concentrated enough, so that the initial setting time of the silicone rubber impression material is controllable, and meanwhile, the silicone rubber impression material with relatively high overall strength is also obtained.

The invention belongs to the technical field of impression materials, and discloses a transparent silicone rubber material for dental impression as well as a preparation method and application of the transparent silicone rubber material. The transparent silicone rubber material is composed of a substrate material and a catalyst, the substrate material is prepared from the following components: vinyl terminated polydimethylsiloxane, polymethylphenyl siloxane oil, nano silicon dioxide, methyltriethoxysilane and polyether modified polysiloxane; the catalyst is prepared from the following components: hydrogen-containing silicone oil, platinum (0)-1, 3-diethylene-1, 1, 3, 3-tetramethyl disiloxane, 1-ethynyl-1-cyclohexanol and cerium oxide. The obtained transparent silicone rubber material has excellent transparency, the light transmittance is larger than 90%, the elasticity modulus can reach 1.41 MPa, the normal-temperature compression rate is as low as 1.81%, the curing time is moderate, the curing time is shortened to a certain degree while the clinical operation time is guaranteed, and the biological safety reaches the standard.

This invention provides a dental silicone rubber impression composition, a material kit, and a method for preparing the same. The impression composition includes a reinforcing filler with a nanometer-sized particle size, and the particle size distribution of the reinforcing filler satisfies D[4,3]-D[3,2]=A, where A is 0~200nm. The above-mentioned solution provided by this invention ensures that the dental silicone rubber impression material has lower roughness while maintaining its mechanical properties. It also avoids the agglomeration of reinforcing particles within the silicone rubber matrix, which could affect the overall flowability of the impression material, and improves processing difficulty. Furthermore, the impression material exhibits a faster curing speed.

The invention relates to an impression tray for creating a dental impression of at least one tooth, comprising: a base element with a base surface, a first boundary element, and a second boundary element, wherein the first boundary element and the second boundary element are arranged at the base element to form a receiving tray between the first boundary element, the base surface and the second boundary element, that is adapted to receive a first dental impression material, wherein the base element comprises a cavity that at least partially extends underneath the base surface so that the cavity and the receiving tray are separated by a base layer of the base element, and wherein the base element comprises an aperture that is in fluid communication with the cavity and adapted to allow the injection of a second dental impression material into the cavity.

The invention relates to a multi-component system for producing a dental impression material, comprising in two or more separate components: i) one or more crosslinkable (co-)polymers, ii) one or more components of a crosslinking system for crosslinking the crosslinkable (co-)polymers, and iii) one or more fillers, wherein the multi-component system comprises at least one platelet-shaped filler, wherein the platelet-shaped filler has a first shape factor F1 = D ortho / D max in the range of 0.3 to 1.0 and a second form factor F2 = D max / H of 3 or more, where D max is the maximum platelet diameter in the platelet plane, where D ortho the largest platelet diameter orthogonal to D max in the platelet plane, and where H is the mean platelet thickness orthogonal to the platelet plane.

The invention discloses a dental impression silicone rubber material and a preparation method thereof, and relates to the technical field of dental impression materials. The raw materials of the dental impression silicone rubber material comprise a matrix component and a catalytic component in a mass ratio of 1: (0.8-1.2), the catalytic component contains a ternary self-assembly catalyst, and the effective content of Al in the ternary self-assembly catalyst is 500-900 ppm, the effective content of Pt in the ternary self-assembly catalyst is 100-500 ppm, and the effective content of Ti in the ternary self-assembly catalyst is 800-1100 ppm. According to the invention, sol constructed by Al and Ti is used as a carrier to load Pt, so that a stable ternary network structure is formed. Pt is physically isolated in a water environment by the structure, electrons are transferred to Pt through oxygen vacancies, the d-band center is reduced, and the catalytic efficiency is improved. On the premise of maintaining or shortening the curing time, the Pt ion release amount can be remarkably reduced, and the cytotoxicity can be reduced.

The utility model relates to the technical field of oral equipment, in particular to a full-oral implant mold taking and positioning structure, which is characterized in that a plurality of positioning holes and a plurality of overflow holes are formed in a positioning tray, and the plurality of positioning holes are in one-to-one correspondence with an upper jaw / lower jaw implant abutment; the mold taking rod penetrates through the positioning hole to be connected to the upper jaw / lower jaw implant abutment, and the outer wall of the mold taking rod and the inner wall of the positioning hole are fixedly connected together through wax type resin, so that reduction of impression accuracy caused by movement of the mold taking rod during mold taking is prevented, and the time for fixedly connecting the mold taking rod in traditional chair-side operation is shortened. Meanwhile, the positioning tray is designed on the upper jaw to be attached to the mucous membrane at the palate fornix part, and the tray edge is designed on the lower jaw to be attached to the alveolar mucous membrane, so that the stability of the positioning tray is improved; and a high-fluidity impression material can be injected between the positioning tray and the alveolar ridge through the overflow hole, so that the impression material can be uniformly distributed in the reserved gap, and an accurate impression is prepared.

The invention relates to an oral impression material blending device which comprises a mounting support, a liquid storage tank, a pump and a driving motor are mounted on the mounting support, and a first connecting piece of a cylindrical structure is fixedly connected to an output shaft of the driving motor; the first connecting piece is rotationally sleeved with a second connecting piece, a sealed cavity is formed by the second connecting piece and the outer wall of the first connecting piece, and the second connecting piece is installed on the installation support. An inlet and an outlet of the pump are correspondingly communicated with the liquid storage tank and the sealed cavity through guide pipes; a water flow sensor is arranged on the guide pipe for communicating the outlet of the pump with the sealed cavity; the lower portion of the first connecting piece penetrates out of the lower end of the second connecting piece, and a plurality of connecting piece clamping blocks are arranged on the outer wall of the first connecting piece in the circumferential direction at intervals. A first connecting piece through hole is formed in the cylinder wall, corresponding to the sealing cavity, of the first connecting piece; and a control panel is also arranged on the mounting bracket. The device is compact in structure and convenient to use, the efficiency is improved, and the dosage of liquid added during film printing material blending can be accurately controlled.

A customized tray using a shape memory material, and a manufacturing method therefor are disclosed. The customized tray using a shape memory material, according to one embodiment of the present application, may comprise a body part, which is manufactured using a shape memory material, has, in the upper surface thereof, an accommodating recess for accommodating a tooth part of a patient, and has, along the inner periphery of the accommodating recess, an impression material space into which an impression material for obtaining an impression of the tooth part is injected.

A digital intermaxillary relationship recording device for denture fabrication is disclosed, which completes the acquisition of intermaxillary relationships necessary for denture fabrication during the patient's first visit, determines the aesthetic position of the anterior teeth using a facial scanner, and allows for the accurate fabrication and provision of dentures on the same day or in two visits. One aspect of the present invention of the digital intermaxillary relationship recording device for denture fabrication includes a maxillary plate on which impression material is provided on the upper surface so as to be able to acquire an impression of the maxillary gums, a mandibular plate on which impression material is provided on the lower surface so as to be able to acquire an impression of the mandibular gums, and an anterior tooth guide member which can be detachably coupled to the anterior end of the maxillary plate, can acquire an index relationship with the lips after coupling, and can reproduce the aesthetic position of the anterior teeth via a facial scanner in the coupled state.

The utility model provides an oral post nuclear impression material infusion assembly which comprises an infusion head, a hollow flow channel is formed in the infusion head, and an outlet communicated with the flow channel is formed in the bottom of the infusion head. The middle section of the infusion head is provided with an easy-to-shear opening, and the easy-to-shear opening is located outside the root canal and used for shearing off the easy-to-shear opening after infusion is completed, and the cut infusion head is left in the root canal to be shaped together with an impression material. Due to the fact that the easy-to-shear opening is formed in the infusion head, the easy-to-shear opening can be sheared off after a root canal impression material is infused, and the cut infusion head is left in the root canal to be shaped together with the impression material, on one hand, the strength and the toughness of the root canal impression are greatly improved, on the other hand, the infusion head does not need to be pulled out of the root canal, and the cost is reduced. Therefore, cavitation bubbles are prevented from being generated in the root canal when the infusion head is pulled out, the strength of the root canal impression is further improved, and the risk that the root canal is broken can be effectively reduced.

A dental alginate impression material according to one aspect of the present invention contains an alginate, calcium sulfate, and an aminocarboxylic acid.

The invention relates to a multi-component system for producing a dental impression material, comprising in two or more separate components: i) one or more crosslinkable (co)polymers, ii) one or more components of a crosslinker system for crosslinking the crosslinkable (co)polymers, and iii) one or more fillers, wherein the multi-component system comprises at least one platelet-shaped filler, wherein the platelet-shaped filler has a first form factor F1=Dortho / Dmax in the range of 0.3 to 1.0 and a second form factor F2=Dmax / H of 3 or more, wherein Dmax is the maximum platelet diameter in the platelet plane, wherein Dortho is the largest platelet diameter orthogonal to Dmax in the platelet plane, and wherein H is the average platelet thickness orthogonal to the platelet plane.

A bite fork or bite tray device with channels to facilitate flow of impression material through the substrate while held inside a patient's oral cavity to obtain bite registration or impression consisting of full or partial teeth impression or full or partial gum impression or alveolar bone or alveolar process or alveolar ridge or a combination of these. A process for use of the system for prescription or design or manufacture of an appliance by providing the necessary steps.

1. The name of this design product: intraoral elbow. 2. Purpose of this design product: used for injecting impression material into the oral cavity. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: main view.

1. The name of the design product: water bottle (dental impression material). 2. The use of the design product: the design product is used for containing special measuring water bottle for dental impression material. 3. The design points of the design product: in the shape, pattern and combination of the design. 4. The picture or photo that best indicates the design points: perspective view 1.

Methods and apparatus for securing a dental restoration prosthesis such as a bridge or crown implant, to the jaw of a patient are provided. A dental implant is inserted into the jaw and is secured to the jawbone by osteointegration. An abutment is connected with the implant. The dental prosthesis is fitted over the abutment. A screw is inserted through an opening in the prosthesis that engages threads on the abutment to secure the prosthesis to the jaw. A cavity is formed proximal of the head of the screw below the proximal surface of the prosthesis. A flowable, two-part dental impression material is injected into the cavity. The impression material reacts to form an elastomeric plug that fills the cavity and excludes particles and liquids from the cavity. The elastomeric plug is removable from the cavity to expose the head of the screw to allow the prosthesis to be removed for adjustment or repair. Once the adjustment or repair is complete, the prosthesis is reconnected with the abutment by reinserting and tightening the screw. The elastomeric plug is inserted back into the cavity.

The invention belongs to the technical field of mandibular movement track acquisition, and discloses an inertial sensor-based mandibular movement track acquisition mechanism, which comprises a sensor module and a wearable bracket, and is characterized in that the sensor module adopts two inertial sensors, and calculates relative movement data between the two inertial sensors according to real-time data; the wearable stent comprises an intraoral stent and an extraoral stent, the intraoral stent is made of a dental impression material, is rigidly connected with a mandibular dentition through impression plaster and adapts to an individual oral cavity structure, and the extraoral stent is of a 3D printing structure and is used for fixing an inertial sensor and realizing light weight through topological optimization. The IMU inertial sensor is introduced into the acquisition platform, so that compared with a stereoscopic vision measurement technology, the precision is higher, and the cost is lower; the lower jaw is connected with the measuring bracket by using an impression material, so that the structure is simpler, and the use is more convenient; the method comprises a corresponding trajectory resolving algorithm, so that a user can obtain a real mandibular trajectory of a patient at a lower cost for subsequent diagnosis.

The invention provides an imitated dental arch former, and relates to the technical field of formers. A guide rod is fixed in the arc-shaped supporting block, the guide rod is of a bent rod structure, and the radian of the guide rod is the same as that of the arc-shaped supporting block; impression materials are adhered to the bottoms of the arc-shaped supporting blocks. According to the device, through the arrangement of the forming part, when the upper teeth extrude the auxiliary rod, if the bottom of the sliding rod cannot be completely clamped into the forming position, the two electric cylinders are controlled to stretch, when the two electric cylinders stretch, the auxiliary rod can be driven to move upwards, and at the moment, the auxiliary rod moves upwards under limiting of the upper teeth; when the impression material is completely extruded into a forming position by the bottom of the sliding rod, the two electric cylinders are controlled to stop stretching, and compared with an existing device, the device is better in adjustability and does not need to be taken out for adjustment; through the arrangement of the illuminating lamp, the oral cavity is illuminated by the illuminating lamp, so that the forming position is convenient to observe, and the practicability is high.

The utility model discloses a disposable tooth mould taking tray which comprises a tray body, the tray body comprises a side plate and a bottom plate, the bottom plate is a U-shaped flat plate, the side plate is a U-shaped annular plate, the side plate is fixedly connected with the outer U-shaped edge of the bottom plate, a handle is arranged in the center of the outer end face of the side plate, a base is arranged on the lower end face of the bottom plate, and the bottom plate is fixedly connected with the base. The base is used for lifting fingers; a U-shaped opening is formed in the bottom plate, a tongue-shaped plate is spliced at the U-shaped opening of the bottom plate, and the tongue-shaped plate and the side plates are arranged above the bottom plate; the non-spliced edges of the tray body and the tongue-shaped plate are provided with flanges, and the flanges are used for reducing the impression loss amount. The base is arranged at the bottom of the tray, so that the operation accuracy of a doctor is improved, and the demolding rate is reduced; by arranging the flanges, the loss amount of the impression material is reduced, and the binding force of the impression material and the tray is improved; the adaptability of the tray is improved by preparing a plurality of tongue-shaped plates and splicing the tray body and the tongue-shaped plates together.