34 results about "Gutta percha - point" patented technology

The present invention provides an improved root canal filling point / cone having a structure that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point having progressively decreasing tapers from the smaller tip end to the larger end. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filling appliances (e.g., Gutta Percha points). A further aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding.

The invention discloses a gutta-percha point. The gutta-percha point comprises a closed section and a filling section connected with the closed section, the closed section comprises A1 parts by weight of gutta percha and B1 parts by weight of a filling agent, the filling section comprises A2 parts by weight of gutta percha and B2 parts by weight of a filling agent, wherein A1 is smaller than A2, and B1 is larger than B2. According to the gutta-percha point, the sectional type design is adopted, the hardness of the closed section is high, operation and sealing are easy, meanwhile, the fusing temperature of the filling section is relatively low, thermoplasticity is improved, the filling section is easy to cut off, the closed section and the filling section of the gutta-percha point can give full play to respective advantages, and the overall using effect of the gutta-percha point is improved.

The invention discloses a novel gutta percha point trimmer. A dentist selects a gutta percha point to-be-trimmed and determines the size of a section to-be-trimmed, then, the gutta percha point is rotationally inserted into a positioning hole with the corresponding specification and size, then a sliding block is pushed by a hand, the sliding block slides on a base; further, blades cut off the redundant part of the gutta percha point, the gutta-percha point with the required size is trimmed, the accurate size of the cutting section of the gutta-percha point can be guaranteed through the positioning holes of different specifications, the blades are symmetrically arranged in a sliding groove, on one hand, bidirectional free cutting can be conducted along the base, on the other hand, the bladepoints of the blades are not exposed, and safety and reliability are higher; according to the novel gutta-percha point trimmer, the gutta percha points are cut on a guide rail, the unnecessary contact area of the blade during cutting can be reduced, the blades can be attached to the guide rail more tightly, and therefore the use effect of the novel gutta percha point trimmer is improved, and theuser experience feeling is better.

The invention provides a gutta percha point medical positioning device. The gutta percha point medical positioning device comprises a tray, and further comprises an indicating unit and a positioning unit. The indicating unit and the positioning unit are respectively installed on the tray. The end part of the positioning unit is provided with the indicating unit. The positioning unit comprises a plurality of first positioning grooves for respectively accommodating gutta percha points. The first positioning grooves are arranged on the tray in a line. The indicating unit comprises a plurality offirst indicating markers for marking the gutta percha points and distinguishing the gutta percha points. The first indicating markers are installed at the end parts of the first positioning grooves. The device is capable of, through installing the indicating unit and the positioning unit, respectively placing the gutta percha points, effectively isolating each gutta percha point, and accurately indicating each gutta percha point, thereby effectively avoiding mixing of the gutta percha points; and through installing the positioning unit, positioning each gutta percha point, and through installing the indicating unit, marking the gutta percha points, and conveniently distinguishing and identifying the gutta percha points. The gutta percha point medical positioning device is rational in structural design, and helpful to save operation time around a chair.

The present invention provides an improved root canal filling point / cone having a structure that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point having progressively decreasing tapers from the smaller tip end to the larger end. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filling appliances (e.g., Gutta Percha points). A further aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding

The invention provides a dental special gutta-percha point ultraviolet disinfection device which comprises a base, a handle is arranged above the base, an ultraviolet light source and a gutta-percha point disinfection tube are arranged in the base, the ultraviolet light source is distributed at the top of the base, the gutta-percha point disinfection tube surrounds the periphery of the handle, a double-layer rotary hole cover is arranged at the top of the gutta-percha point disinfection tube, and a gutta-percha point cutting tube is connected above the double-layer rotary hole cover. According to the special dental gutta-percha point ultraviolet disinfection device, ultraviolet disinfection is adopted, the gutta percha point disinfection tube and the gutta percha point cutting tube are of an integrated structural design, and are connected through the middle double-layer rotary hole cover, so that disinfection, measurement and cutting of the gutta percha point are completed in one step, the operation process is simplified, the workload of doctors is reduced, and unnecessary pollution and the like are avoided.

A method is proposed for root treatment of a tooth, by which gutta percha is introduced into the root canal. For this purpose, a gutta percha point (6) is inserted into the root canal and is subjected to pressure and heat by a plugger (5). The gutta percha point (6) is prefabricated with a length that corresponds to the distance of the apex of the root canal from the tip of the plugger (5) inserted as far as possible into the root canal.

The invention discloses a preparation method and application of a zinc oxide high polymer. The preparation method comprises the following steps: 1) preparing a nano zinc oxide carrier with more defects on the surface; 2) preparing the olefin polymerization catalyst: adding the nano-zinc oxide carrier and magnesium chloride into a ball-milling tank in a nitrogen environment, injecting a titanium metal compound, and putting the ball-milling tank into a wet-process ball mill for grinding to prepare the olefin polymerization catalyst; 3) preparing the zinc oxide high polymer. The zinc oxide high polymer prepared by the method has a zinc oxide active component, the zinc oxide content can reach more than 80%, and the zinc oxide high polymer can be used as a zinc oxide carrier to reduce the use amount of common zinc oxide, and can also be directly applied to the fields of gutta-percha points, medical splints and the like.

The invention discloses a preparation method of a gutta percha point composite material suitable for SLS printing. The preparation method comprises the following steps that a blocking agent and an antibacterial agent are subjected to modifying treatment, and then suspension liquid is prepared in an organic solvent B; a high molecular polymer, a modified additive and an organic solvent A are mixedto obtain a modified high molecular solution; and the prepared suspension liquid is mixed with the prepared modified high molecular solution according to a certain ratio, and then drying is carried out to finally obtain composite powder suitable for SLS printing. Gutta percha points printed by the material prepared by the preparation method is good in mechanical properties, excellent in antibacterial effect, good in biocompatibility, high in production and processing precision, smooth in printing, and widely used in the field of biomedicine, especially in the field of oral medicine; and the accuracy of root canal therapy can be improved, and a new way is provided for reducing the failure rate of root canal therapy.