66 results about "Permlastic" patented technology

To provide a dental impression material composition having high hydrophilicity comparable to that of polyether rubber-made impression materials, being superior in recovery from deformation caused by removal out of an oral cavity, which are similar to silicone rubber-made impression materials, the dental impression material composition being superior in dimensional precision, and good in storage stability. The dental impression material composition includes (A) 100 parts by weight of the sum of (1) an organopolysiloxane containing at least two aliphatic unsaturated hydrocarbons in one molecule and (2) a polyether containing at least one aliphatic unsaturated hydrocarbon in one molecule, in a weight ratio of (1) to (2) of 1:0.01˜1:5, having (B) 0.1˜100 parts by weight of an organohydrogenpolysiloxane containing at least three hydrogen atoms directly bonded to a silicon atom in one molecule, (C) 10˜500 ppm, based on the sum of (A) and (B), of a silicone-soluble platinum compound, (D) 10˜800 parts by weight of an inorganic filler, and (E) 0.5˜5 parts by weight of a nonionic surfactant and/or a polyether-modified silicone oil, compounded therewith.

Two-part dental impression material curable by a metathesis reaction comprising a base paste with first and second resin components each containing at least two cycloolefin groups per molecule curable by a metathesis reaction with a metathesis catalyst. The first resin includes a urethane polyether or polyester carboxylate backbone terminated with the cycloolefin groups and the second resin includes an alkoxy-siloxane polyether or polyester carboxylate backbone terminated with the cycloolefin groups. The metathesis catalyst can be a ruthenium carbene complex catalyst.

An impression tray set for edentulous jaw, including a pair of a maxillary impression tray and a mandibular impression tray for use in taking an intraoral impression of an patient including an edentulous patient, and capable of simultaneously recording bite position and height when taking the impression, is provided.

An impression tray set for edentulous jaw is formed by a maxillary impression tray 1 and a mandibular impression tray 2 respectively including a tray main body 4 having a U-shaped groove on which an impression material is to be applied on a front surface side thereof, an engaging part formed on a back surface of the U-shaped groove in a position corresponding to an alveolar ridge of front teeth, and a handle part 6 that is detachably connected to the engaging part, and each of the maxillary impression tray 1 and the mandibular impression tray 2 includes projecting parts 7 being provided on the back surface, at left and right portions of the U-shaped groove in a position corresponding to an alveolar ridge from a first molar part to a premolar part, the projecting parts 7 being used for determining bite position and height in a state in which at least a part of flat top surfaces 7a of the projecting parts 7 contact each other when taking an impression.

A dental impression tray includes; a U shaped base, which includes a U shaped planar impression table, an outer wall and an inner wall, wherein the impression table extends between the inner wall along an inner periphery and the outer wall along an outer periphery, wherein the inner and outer walls extend upwardly from the base. The impression table together with the inner and outer walls thereby define a U shaped bite channel configured for receiving therein impression material and a set of teeth, thereby operably taking impressions of the teeth. The impression table includes numerous planar knock-out panels arranged in side by side fashion along the center line, the knock-out panels are configured to be selectively removed from the impression table thereby selectively providing an opening through the impression table. Each knock out panel is separated from the adjacent knock out panel by a panel gap at an open side wherein the gap extends transversely to the center line and between the inner and outer wall.

Device for taking an impression of a subject's ear minimizes risk of damage on the eardrum when the impression is made. The device comprises a nozzle having a first essentially tubular part that has a centre axis and a side wall. The first tubular part has also a first end intended to be inserted into a subject's ear, a first opening for the outlet of impression material, and a second end connected to a supply member for impression material to the tubular part.

The first opening has a centre axis that is essentially perpendicular to the centre axis of the first tubular part at the point where the two centre axes intersect each other, alternatively has a direction, as seen from the centre axis of the first tubular part through the side wall, from said first end. The first opening is preferably arranged in the side wall of the tubular part.

Example embodiments of the present invention include hot melt dental adhesive materials that can create a reversible bond. In addition, example embodiments of the present invention include hot melt dental impression materials that can be used to accurately and efficiently obtain a dental impression. Moreover, example embodiments of the invention include devices and methods for use with the hot melt dental adhesive materials and the hot melt dental impression materials disclosed herein. The hot melt dental adhesive materials and the hot melt dental impression materials can provide dental professionals with dental materials that are more effective, efficient, and easier to use when compared to conventional dental adhesive materials and conventional dental impression materials.

The invention provides a molding denture cleaning device. The device comprises a bottom plate, a drive motor, a revolving unit and a scrubbing unit; the drive motor is mounted in the middle of the upper end surface of the bottom plate through a motor seat, an output shaft of the drive motor is connected with the revolving unit through a flange, the revolving unit is mounted in the scrubbing unit in a movable connection manner, and the scrubbing unit is mounted on the upper end surface of the bottom plate and located on the outer side of circumference of the drive motor. The device can solve the following main problems in a cleaning process of a denture: a, an impression material on the surface of the denture is bonded with holes in the denture after being solidified, therefore, the dentureis difficult to clean and the cleaning efficiency is low; and b, the existing dentures subjected to collective cleaning are mostly placed in a cleaning cylinder and stirred, the dentures and the cleaning cylinder or the dentures collide easily in the stirring process, and denture damage is further caused.

The invention relates to an accurate mold taking method and device for multi-tooth implantation. The method comprises the following steps: 1) mounting an implantation impression rod in an implant in an oral cavity; 2) performing scanning by using an intraoral scanner to obtain three-dimensional point cloud data; 3) carrying out editing and modeling by utilizing software to obtain a three-dimensional fixed block model, and forming a fixed hole in the surface of the three-dimensional fixed block model; 4) performing editing and modeling by utilizing software to obtain a three-dimensional tray model, wherein the three-dimensional tray model comprises a supporting block; a supporting groove formed in the surface of the supporting block; and a fixed inserting hole formed in the bottom surface of the supporting groove; 5) performing 3D printing on the three-dimensional fixed block model to obtain a fixed block, and performing 3D printing on the three-dimensional tray model to obtain a tray;and 6) sleeving the implantation impression rod with the fixed block through the fixing hole, injecting an impression material into the supporting groove, coating the fixed block with the supporting groove, and taking down the impression material after the impression material is solidified, thereby finishing mold taking. According to the mold taking method, the three-dimensional digital acquisition technology, the digital design and the advanced manufacturing technology are combined, and accurate, rapid and efficient mold taking operation can be achieved.

A medical resin composition is produced by mixing a powder of a polymer (A) comprising repeating units having an ester group and a liquid of a vinyl ester monomer (B) having 6 or more carbon atoms to increase a viscosity and, according to demand, further performing a polymerization reaction. The thus produced resin composition inhibits leaching of irritative substances, reduces any adverse effects on the human body by endocrine disruptors, etc. and can be prepared with high operational efficiency. The resin composition is suitably used as a dental resin composition such as a tissue conditioner, a functional impression material, a lining material, a denture base material or a mouth piece material.

The invention discloses an overflow type dental impression tray, The tray is a channel capable of accommodating an upper dental arch, and further comprises a third bottom plate, a second outer side wall and a second bottom plate, and a plurality of third meshes in one-to-one correspondence with first meshes are formed in the second bottom plate; a first sliding assembly enables the second bottom plate to be located above or outside the third bottom plate; a second sliding assembly enables the second outer side wall to slide on a first outer side wall and enable the third bottom plate to be incontact with or separated from the first bottom plate; and when the third bottom plate makes contact with the first bottom plate, the second bottom plate is located outside the third bottom plate. Theoverflow type dental impression tray can prevent an impression material from flowing into an oral cavity, the tray and the impression material can be quickly separated, and the overflow type dental impression tray is convenient to clean.

The invention relates to a small dental impression material automatic blending device which comprises a blending cylinder, a mixing unit and a discharging unit, the mixing unit is arranged at the upper end of the blending cylinder, and the discharging unit is arranged on the inner wall of the lower end of the blending cylinder; according to the invention, through a quantitative blending mode, theproblem of many procedures of manual proportional mixing is solved through a mechanical quantitative mode, so that the workload of dental nurses is reduced, and the quality of a dental impression material is also improved; an impression needle tube is fixed, and then the impression material is directly guided to the impression needle tube, so that the problem of material waste in the process thatnurses guide the impression material into a needle cylinder is solved.