34 results about "Gutta percha - point" patented technology

A gutta-percha point, used as a root canal plugging material in an endodontic treatment, is disclosed. The gutta-percha point has a plurality of engraved or embossed marks as working length marks on its upper portion. Each of the engraved or embossed marks is preferably painted with a distinguishable color along a circumferential surface. The above marks are formed on the point within a marking range while being spaced out at intervals of 1 mm and 2 mm. The marking range starts at a position, spaced apart from the apex of the point by 18 mm, and ends at a position spaced apart from the apex by 24 mm. The gutta-percha point thus allows an endodontist to be free from a repeated marking of working lengths on such points during an endodontic treatment, thus allowing the endodontic treatment to be accomplished within a desired short period of time. Due to the working length marks, the gutta-percha point is precisely inserted into an access cavity of a decayed tooth by a desired depth, thus being free from forming a dead space in the root canal or piercing the apical tissue.

The ability to incorporate iodoform, tetracycline and a combination of iodoform / tetracycline into root canal gutta percha points is described. The iodoform, tetracycline and iodoform / tetracycline combination are bound within the gutta percha points. They act as a reservoir of antimicrobial that is capable of diffusing onto the surface of the gutta percha thereby inhibiting the colonization of bacteria on the gutta percha points and within the root canal system. Tetracycline is capable of coalescing within the dentinal tubules to inhibit long term microbial growth. These medicated gutta percha points are site specific, surface acting antimicrobial gutta percha points.A method of the usage and delivery of amorphous form iodoform gutta percha, iodoform / tetracycline gutta percha, or tetracycline gutta percha within a heated compule with a pressure plunger by delivering the thermo-softened heat labile amorphous form via a pressure extrusion system through a cannula into the prepared root canal system.

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.

An apical portion of a root canal is cleaned with an abrading portion of a file that has a taper that is greater than 0.20. Once the apical portion has been cleaned with an abrading portion that is greater than 0.20, such as 0.25, then an endodontic point, such as a gutta percha point can be easily received in the apical portion of the root canal to seal the apex. It is optimal to utilize a set of instruments. All of the instruments may have files with abrading portions that are greater than 0.25. However, only the larger files need have such abrading portions since they are the last to be used when cleaning the apical portion.

The invention discloses a tooth glue tip filler in tooth root canal, it consists of force application part, vessels and push bar part connecting the force application part, said vessels consists of shedding and guided groove through vessels, said push bar part consists of push bar equipped in guided groove and is relative to vessels sliding in guided groove. Apply external force on the force application part during the use process, the push bar moves relatively to vessel, the tooth glue inserting the guided groove from shedding is cut by push bar and fills into the 1 / 3 root canal of root tip to making the filled tooth glue tip is controlled in the required length range, it need not remove exposed tooth glue while blocks the tooth root tip hole to making the tooth root tip will not be filled over.

A gutta percha point includes a shaft having a first end and a second end opposite the first end. The shaft defines a first region having a first taper, the first region extending from the first end of the shaft, and a second region having a second taper, the second region extending between the first tapered region and the second end of the shaft. The second taper of the second region is greater than the first taper of the first region. The shaft may include a third region extending between the second region and the second end of the shaft.

The invention discloses a method for detecting the neural signal of spinal cord for long term and positioning an exciting electrode. The method comprises the following steps: 1. drilling holes which are distributed according to a demand with a special bone drill on the vertebra; 2. inserting the acupuncture electrodes in the spinal nerves to be detected or excited with a microelectrode propeller through the holes; and 3. inserting conical gutta-percha points in the holes which are firstly inserted the acupuncture electrodes to fix the acupuncture electrodes. Compared with the prior art, the method of the invention has small wound, simple operation and flexible use, the three-dimension electrode distribution which can meet any demand is realized, and the electrodes are shortened to be in level with the surface of the bone so that the electrodes can be buried under the skin, thus the electrodes can not damage the skin and be hit, and the electrodes can not be damaged, thus having safety and reliability.

An apical portion of a root canal is cleaned with an abrading portion of a file that has a taper that is greater than 0.20. Once the apical portion has been cleaned with an abrading portion that is greater than 0.20, such as 0.25, then an endodontic point, such as a gutta percha point can be easily received in the apical portion of the root canal to seal the apex. It is optimal to utilize a set of instruments. All of the instruments may have files with abrading portions that are greater than 0.25. However, only the larger files need have such abrading portions since they are the last to be used when cleaning the apical portion.

The embodiment of the invention discloses a telescopic and deformable gutta-percha tip cutter, which comprises a gutta-percha cutting part having a variable cutting surface, a rod piece connected to the side, away from the variable cross section, of the gutta-percha cross section. The gutta-percha cutter solves the problems that an existing gutta-percha cutter is not suitable for cutting off a gutta-percha point of a single root canal opening and cannot cut off the gutta-percha point according to the irregular shape of a root canal.

The invention provides a sorting and detection all-in-one machine for gutta percha points. The machine comprises an arrangement disc, a transfer mechanism, a conveying belt and a detecting piece; thearrangement disc comprises hollow space surrounded by an annular wall and a bottom surface; the arrangement disc gradually feeds the gutta percha points onto fixtures of the transfer mechanism one byone through switching mechanisms uniformly distributed on the annular wall; the transfer mechanism is provided with a rotating motor; the fixtures are uniformly distributed on the rotating motor by around axis; the fixtures are aligned to a discharge position of the arrangement disc in one rotating position, and are aligned to a clamping position of the conveying belt in the other rotating position; and the detecting piece is provided with upper and lower detecting probes, which are respectively positioned in an upper limit position and a lower limit position requested by specifications of thegutta percha points in the clamping position of the conveying belt. The machine can automatically arrange, sort and detect the gutta percha points.

The invention relates to the technical field of medical apparatus and instruments, and in particular relates to a measurable gutta percha point. The measurable gutta percha point comprises gutta percha and a measuring device, wherein the measuring device comprises two measuring heads and a center pole, the center pole connects the two measuring heads, one big measuring head and one small measuringhead of the gutta percha point are arranged at two ends of the gutta percha point, and gutta percha wraps the center pole. For the measurable gutta percha point provided by the invention, the measurement and filling of a root canal are carried out simultaneously, and the effects that the operation is convenient and rapid, the work efficiency is improved by 50%, the accuracy is high, and the filling effect is good are achieved.

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

An improved lateral filling device of dental operation instruments is based on the prior structure, which consists of two sections of a spicula (1) and a handle (2) of the spicula. The lateral filling device is characterized in that the lateral filling device respectively consists of a declined-sawtooth-(3)-shaped lateral pressing-feeding needle which is made by the spicula (1) at one lateral side along the lengthways direction and a ascending-sawtooth-(4)-shaped lateral pulling-discharging needle which is made by the spicula at one lateral side along the lengthways direction; because the former lateral filling device is changed as that one lateral side of the smooth spicula (1) is provided with the sawteeth of different structure and shape requirements, the improved lateral filling device creates conditions for the operation that the declined sawtooth (3) can be very conveniently used for pressing and feeding gutta-percha points into the tooth root canal, and the ascending sawtooth (4) is used for pulling and discharging the gutta-percha points outwards.

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 dental portable gutta-percha point, which comprises a gutta-percha point body, the front end face of the clamping part is fixedly connected with the rear end of the gutta-percha point body, the clamping part is flat, the clamping part is provided with two parallel surfaces, the rear end face of the clamping part is provided with a step blind hole, the step blind hole comprises a first hole and a second hole which are communicated with each other, and the aperture of the first hole is larger than that of the second hole; the first hole is located in the rear end face of the clamping part, and the two surfaces of the clamping part are each provided with a through hole communicated with the second hole. The marking piece comprises a first head part and a first rod part, the surface of the first rod part is coated with pigment, the first head part is fixedly connected with the first rod part, the first head part is used for being clamped in the first hole, and the first rod part is used for extending into the second hole. According to the gutta-percha point storage box, the gutta-percha points are not prone to rolling when being stored in the storage box, and pigment on the gutta-percha points cannot fall off due to collision and friction.

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.

A gutta-percha point cutter comprises a handle and a first working end. The handle is a round rod with the length 8-12 cm and the diameter 5-6 mm, and the first working end is fixed at one end of the handle; the first working end comprises a first long handle, a first heat storage portion, a short handle and a cutting head; the back end of the first long handle is fixed at one end of the handle, the length of the first long handle is 1-3 cm, and the diameter of the first long handle is 1.5-2.5 mm; the first heat storage portion is fixed with the front end of the first long handle, the back end of the short handle is connected with the first heat storage portion, and the included angle of the short handle and the first heat storage portion is 125-145 degrees; the cutting head is in the shape of a disc, the diameter of the cutting head is 1.6-2 mm, the thickness of the cutting head is 1.3-1.7 mm, and the upper surface of the cutting head is fixed with the front end of the short handle. The gutta-percha point cutter is simple in structure, convenient to manufacture, and capable of shortening the operating time, improving the treating efficiency and saving the cost.

The invention discloses a special dental operation apparatus in a root filling treatment as well as a manufacturing method thereof. The invention relates to an improvement to the 'root-filler' structure of the existing dental operation apparatus for solving the trouble of feeding a gutta-percha point in the slender root tube of a tooth during the operation process of a root tube treatment as a manufacturing method of an apparatus for realizing the improvement. The invention is characterized in that the side surface of the circle of a needle body (1) is respectively provided with a sawtooth side surface (3) and a smooth side surface (4); besides, the sawtooth side surface (3) on the needle body (1) with large friction force is used for bearing the forward-backward displacement regulating motion during the process of feeding a soft gutta-percha point in place in the tooth tube of the tooth; while the smooth side surface (4) is contacted with the soft gutta-percha point to lead the needle body (1) to conveniently slide away from the gutta-percha point and to be conveniently pulled out from the root tube of the tooth.

The invention discloses a gutta percha point cutter having a planishing function. The gutta percha point cutter comprises a body and a head, wherein a mounting hole for allowing the head to be mountedin is formed in the front end of the body; a metal elastic piece for electric conduction is arranged in the mounting hole; the head comprises two metal members which are mutually symmetrical; an insulating layer is arranged between the two metal members; a front end formed by the two metal members and the insulating layer is cylindrical; the front ends of the two metal members communicate with each other through a metal sheet; the resistance of the metal sheet is greater than that of the metal members; the rear end of the head is inserted in the mounting hole; and the two metal members are conducted to the metal elastic piece. Through the adoption of the gutta percha point cutter disclosed by the invention, the problem that in the prior art, an electrothermal gutta percha point cutter cannot directly perform planishing on gutta pertscha after a gutta percha point is cut can be effectively solved.

The invention discloses a tooth glue tip filler in tooth root canal, it consists of force application part, vessels and push bar part connecting the force application part, said vessels consists of shedding and guided groove through vessels, said push bar part consists of push bar equipped in guided groove and is relative to vessels sliding in guided groove. Apply external force on the force application part during the use process, the push bar moves relatively to vessel, the tooth glue inserting the guided groove from shedding is cut by push bar and fills into the 1 / 3 root canal of root tip to making the filled tooth glue tip is controlled in the required length range, it need not remove exposed tooth glue while blocks the tooth root tip hole to making the tooth root tip will not be filled over.

The invention relates to a work tip for a hot melting gutta-percha filling machine, which comprises a work tip body, and the outer surface of the front end of the work tip body is a rough surface. The working tip has the beneficial effects that when 1 / 3 root canal treatment is carried out on teeth, after the working tip body of the hot melting gutta-percha filling machine heats and pressurizes the gutta-percha tip, the redundant gutta-percha tip is pulled out from a root canal; the rough surface on the outer surface of the front end of the work tip body can increase the contact area of the work tip body and a gutta-percha point, the surface friction force of the work tip body is increased while the taper of the work tip body is kept, the gutta-percha point can be attached to the surface of the work tip body, the redundant gutta-percha point can be pulled out more easily, the operation difficulty of root canal filling is reduced, and the working efficiency is improved. The one-time success rate of root canal therapy is improved; the structure is simple and easy to realize.

The invention relates to the technical field of gutta-percha points, in particular to a biological ceramic gutta-percha point. The biological ceramic gutta-percha tip comprises the following components: natural rubber, zinc oxide, barium sulfate, zirconium oxide, silicon dioxide, an antioxidant, a bioactive material and a pigment. The biological ceramic gutta-percha tip has good biocompatibility, the micro-gap and micro-leakage phenomena between the gutta-percha tip and filling paste are avoided, the developing effect is improved, and the brightness is improved by 20%; the bone regeneration inducing function is realized;

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.