43 results about "Root Canal Preparations" patented technology

A root canal is sequentially cleaned in sections from the crown to the apex by dividing it into three sections including an operative coronal portion, an operative middle portion and an apical portion. An operative phase corresponds with each section and specific instrumentation is used in each phase. After an opening is formed into the tooth to provide access into the root canal, the opening is preferably rectified to remove obstructions so that the anatomical root canal can be filly accessed. The pulp material is then sequentially removed from the portion of the root canal above the apical portion of the root canal with a set of instruments. The apical portion is then preferably cleaned with an irrigator or alternatively with another set of instruments. An optional set of instruments can also be used to improve the access into the apical portion such that irrigants can be delivered to the apical portion. Cleaning of the pulp material from the root canal also shapes the root canal to ease filling of the root canal with a filling material. The root canal preparation and shaping are completed while maintaining the original anatomy of the root canal. Each instrument comprises a handle connected to a file. Each file has an abrading portion and terminates at a tip. The files used to clean the portion of the root canal above the apical portion have properties which enable the abrading portion of the file to conform to the configuration of the root canal while simultaneously moving the file in a cleaning motion.

The invention provides a manufacture method of a clinical personalized and integrated all-ceramic post-and-core of dentistry. The manufacture method is characterized in that a high-precision and short-wavelength visible scanner is adopted and directly used for scanning intraoral defected teeth subjected to root canal preparation, the CAD/CAM (Computer Aided Design/Computer Aided Manufacturing) central incisor prosthetic design is adopted, the design of integrating the post and the core is accomplished, and then the incisor back-cut method design is carried out to accomplish the design of the integrated all-ceramic post-and-core, and numerical control processing equipment is adopted and used for processing in order to accomplish the manufacture of the all-ceramic post-and-core.

The invention discloses a motor driven intelligent control device for a root canal apex locator and a control method thereof. The motor driven intelligent control device is characterized by comprisinga depth detection assembly, a chip processing center, a buzzer warning unit and an LCD display device, wherein the depth detection assembly, the buzzer warning unit and the LCD display device are connected with the chip processing center; and the chip processing center is in control connection with a motor. A measuring function and a motor operation function in the root canal apex locator are combined into one body, the motor operation is controlled intelligently in the measuring process, the automatic starting, automatic deceleration, automatic stopping and automatic inversion functions of the motor are realized, and a ''root measurement function'' at present is integrated with the functions of root canal preparation, automatic root canal preparation and reciprocating rotation, so that the root canal therapy is more intelligent and automated.

The invention discloses a root canal preparation effect detection method and device in stomatology teaching. The method is characterized by dying a transparent resin tooth model or a transparent resin simulated root canal before and after the root canal preparation with blue dye and red dye respectively and then carrying out digital fixed focus shooting; extracting contour of the outer wall of the root canal before and after preparation and the central axis of the root canal before and after preparation in shot mages by utilizing image processing software, and setting a plurality of mark points before and after preparation at intervals on the central axis of the root canal before and after preparation; and finally, carrying out overlapping comparison on the corresponding images, determining the relative positions of the corresponding mark points on the comparison image to detect and estimate the preparation effect of the root canal. The device is mainly formed by a protractor arranged on a base, a rotation shaft arranged in the center hole of the protractor, a base platform arranged at the upper end of the rotation shaft and used for fixing the transparent resin tooth model or the transparent resin simulated root canal, and a digital camera connected with a computer. According to the root canal preparation effect detection method and device in stomatology teaching, students and teachers can visually estimate the change of shape of the root canal before and after preparation conveniently.

The invention provides an ultrasonic flushing instrument and relates to the field of oral medical instruments. The ultrasonic flushing instrument comprises a liquid storage tank, an ultrasonic generator, a first water pump, a second water pump, a recovery tank, a handle, a back suction cavity, a flushing syringe needle, a connecting pipe, a flushing head, a first supporting rod, a second supporting rod, a first switch, a second switch, a third switch and multiple infusion tubes. In the using process, the first switch is turned on, disinfectant liquid can be sprayed to root canals of the teeth of a patient, the third switch is turned on at the same time, sound waves generated by the ultrasonic generator can be used for loosening scraps and a smear layer on the root canal wall of the teeth during root canal preparation to facilitate flushing and cleaning through the disinfectant liquid, and the second switch can be turned on at the same time to suck back the disinfectant liquid in a tooth marrow cavity into the recovery tank in time. The ultrasonic flushing instrument is convenient to operate, saves time and labor, makes the time of a doctor beside a chair shorter, improves treatment quality by the doctor and economical efficiency, and relieves the pain of the patient.

The invention discloses a root canal motor measurement therapy apparatus. The root canal motor measurement therapy apparatus is characterized by comprising a main machine handle and a speed-reducing bending machine, wherein the main machine handle is internally provided with a control unit and is externally provided with a display screen; the head of the main machine handle is connected with the speed-reducing bending machine; the control unit comprises a motor control unit, a CPU (Central Processing Unit) and a root canal testing unit; the motor control unit and the root canal testing unit are connected with the CPU. According to the root canal motor measurement therapy apparatus, a measurement function in the root canal therapy apparatus and an operation function of a motor are integrated; the motor is intelligently controlled to operate in a measurement process, and an operation mode is converted into a reciprocating motion mode when the motor meets great resistance in an operationprocess and the motor reaches a root tip position; then the motor is automatically stopped or is inversed to an inversion mode so that automatic starting, automatic speed reduction, automatic stoppingand automatic inversion functions of the motor are realized; a 'root measurement function' root canal preparation function, an automatic root canal preparation function and a reciprocating rotation function at present are integrated, so that root canal therapy is more intelligent and automatic.

The invention discloses a lubricant used for the root canal therapy, belonging to the technical field of root canal therapy of the oral cavity dental pulp and the disease periapical tissue, which solves the problems in the prior art that the degree of the root canal lubricating is not high enough, the therapy success rate is low and the problems of large labor, effort and time condumption during operation. In order to achieve the aims, the technical proposal adopted by the invention is that: the lubricant used for the root canal therapy comprises the following mixed compositions: ethylenediamineteraacetic acid 100.00 to 200.00g/L, carbamide peroxide with a concentration of 100.00 to 200.00g/L, glycerol with a concentration of 100.00 to 150.00g/L and cellulose with a concentration of 5.00 to 50.00g/L. Compared with the prior art, the lubricant has the advantages of simple preparation, easy operation, no poison and side effect and enhanced effect of the root canal preparation.

The invention relates to a reamer with an improved blade for use in root canal preparation, the blade being spiral-shaped with a pitch increasing towards the tip, and with a cutting or non-cutting tip. At given points along the length of the spiral of the blade, there is a plurality of gaps, the spiral starting again beyond the gaps, wherein the portion where the spiral is interrupted has either a constant or decreasing cross section linking the two diameters before and after the gap.

The invention discloses a multi-dimensional artificial operation force measuring device for root canal preparation, comprising a dental handpiece for preparing root canal of simulated teeth. The simulated tooth is mounted on a six-dimensional force measuring device for measuring the six-dimensional force information of the simulated tooth during the root canal preparation process. The dental handpiece is provided with a three-dimensional force measuring device for measuring three-dimensional force information that the operator applies to the handpiece during the root canal preparation process.The three-dimensional force measuring device is composed of a central force ball and two three-dimensional force measuring units. The six-dimensional force measuring device of the tooth body is composed of a bottom plate, a six-dimensional force sensor, a U-shaped tooth fixing groove, and a U-shaped tooth baffle. The multi-dimensional artificial operation force measuring device for root canal preparation can obtain multi-dimensional mechanical information applied by the operator's hand and multiple dimensional force information of the simulated tooth in real time, thereby providing direct analysis data for analyzing the influence of the artificial operating force on the root canal formation.

The invention discloses a method for using a BLX-machine-use nickel titanium file for a testing experiment. The method comprises the following steps: first, using a 20% EDTA-combined BLX-machine-use nickel titanium file for root canal preparation of an experimental subject by use of a crown root direction preparation method; with a condition of a motor speed of 400-550RPM, using a G drill to expand an open root canal orifice; by the above method, dividing a straight-through root canal into four parts comprising a root canal crown part, a root canal middle and upper part, a root canal middle and lower part and a root tip part with each part being pulled through back and forth for 5 times; then cleaning debris among file threads; repeating the above operations for multiple times; using a NO.20 stainless steel K file to confirm whether the working length is achieved; and using BLX NO. 25 and NO.35 root canal files for successive root canal preparation by use of an operation method same as that of the first step. The beneficial effects of the method are that: the method can reduce the occurrence rate of pains during the period of root canal therapy, has an appropriate effect on pain reaction extent, and is worthy of clinical popularization and use.

The invention discloses a telescopic root canal file, and aims at solving the problems that in the prior art, the length of the root canal file is shorter, so that the operation of medical personnel is influenced. The telescopic root canal file comprises a handle, a neck part and a blade part in sequential connection, wherein the handle is a telescopic handle. The telescopic root canal file is used for root canal preparation.

The invention provides a root canal therapy device in a mechanical vibration and rotation dual-drive mode. The root canal therapy device comprises a machine head, a handle, a first flexible transmission shaft and a second flexible transmission shaft, wherein the machine head comprises an outer main body, a core shaft part used for installing a root canal file instrument, a first driving input shaft part and a second driving input shaft part, the core shaft part is installed in the outer main body, and the handle is provided with a first driving motor and a second driving motor. According to the invention, the root canal file instrument can move in two modes of rotation and vibration during root canal preparation, efficient cutting of the instrument on the root canal wall is achieved, additional instrument vibration effectively reduces the cutting resistance and the cutting temperature, a contamination layer is avoided, and the quality and efficiency of root canal preparation are remarkably improved.

The invention provides dental pulp regeneration paste. The dental pulp regeneration paste comprises an active component, and the active component is prepared from, by weight, 10-40 parts of Yunnan Baiyao, 10-40 parts of metronidazole, 10-40 parts of ciprofloxacin, 0.01-1 part of insulin-like growth factor1, 0.01-1 part of estradiol and 5-20 parts of chitosan. The dental pulp regeneration paste has the following advantages that compared with traditional root canal therapy, the dental pulp regeneration paste is easy for oral cavity clinicians to operate and short in treatment time when used clinically, the number of times of further consultation of patients is small, and the treatment efficiency of dental pulp diseases is greatly improved. As mechanical root canal preparation is not needed, secondary damage to the root canal wall tissue is avoided, and the risk of odontagma is reduced.

The invention relates to a digitalized assessment method and system for in-vitro root canal preparation quality. The method comprises the following steps: firstly, producing a 3D (Three Dimensional) printing simulation resin tooth model based on an isolated tooth digitalized image; then carrying out CBCT (Cone Beam Computed Tomography) or microscopic CT (Computed Tomography) scanning on resin tooth models before and after root canal preparation; recording an apparatus model, steps and conditions of apical foramen expansion and fragments outside a root canal hole before and after the use of root canal preparation operation; extracting the shape of each cross section of a root canal wall, a geometric center point of each cross section of a root canal and the minimum distance between each part on the root canal wall and the surface of a tooth body by adopting image processing software; and then overlapping and comparing corresponding images before and after the preparation to obtain the cleanliness and deviation degree of the resin tooth root canal and residual minimum root canal wall thickness after the preparation. According to the digitalized assessment method and system involved in the invention, the in-vitro root canal preparation operation of a resin tooth is subjected to digitalized assessment, so that the accuracy and objectiveness of assessing the root canal preparation effect can be improved.

The invention discloses a curved handpiece for dental root canal treatment. According to the curved handpiece for dental root canal treatment, an overall scheme of the dental curved handpiece which isconductive inside, insulated in surface, compact in structure, small in height and size and convenient to maintain is formed for the first time in the industry; the curved handpiece can accurately, safely and stably realize a dental root canal length measuring function, further realizes a stable two-in-one function of combining root canal preparation and dental root canal length measurement, is compact in integral structure, provides a good visual field, reduces the risk of instrument separation or preparation step generation in the operation process of doctors, and greatly guarantees the safety improvement. According to the scheme, disassembling, maintenance and cleaning are facilitated, the risk of cross infection is reduced, the use safety and convenience effects of the device are further improved, and the curved handpiece has great market benefits.

The invention relates to a lubricant for root canal treatment and a preparation method thereof, and belongs to the technical field of oral care. In order to solve the problem that an existing root canal lubricant is poor in liquidity and the root canal preparation effect is not ideal, the invention provides a lubricant for root canal therapy. The lubricant comprises the following components in percentage by mass: 17%-22% of disodium ethylene diamine tetraacetate, 20%-60% of glycerol, 5%-20% of polyethylene glycol-400, 1%-5% of polyoxyl (40) stearate, 1%-1.4% of sodium lauryl ether sulfate and0.1%-5% of sodium hydroxide. The lubricant for root canal therapy provided by the invention is an emulsifiable paste, and has high fluidity and high permeability. The paste softens the dentin of the root canal wall during expansion formation, has a good lubricating effect, is beneficial to expanding, filing and dredging fine calcified root canals, reduces the preparation difficulty of the fine calcified root canals, shortens the mechanical preparation time, and prevents instruments from being broken and worn.

The invention provides a root canal probing method. The method comprises the following steps: S1. providing an isolated tooth, carrying out dredging enlargement treatment on 2/3 a crown of a root canal, and observing whether the root canal is adaptable to a prepared form or not; S2. carrying out dredging treatment on 1/3 a root tip of the root canal, and carrying out length measurement; S3. enlarging the 1/3 root tip of the root canal to a measurement dead point; S4. probing to judge forms of all directions of the root canal at the dead point; S5. continuing to enlarge the root canal, probing the forms of all the directions of the dead point, and stopping enlarging a root canal wall in a corresponding direction when the condition that a small-step-similar structure is present on the root canal wall is probed; S6. carrying out root canal preparing on the root canal wall in the corresponding direction when the condition that the small-step-similar structure is present on the root canal wall is not probed. According to the root canal probing method provided by the invention, whether root canal preparation is subjected to insufficient or excessive problems or not can be judged through probing internal dead point and diameter conditions of the root canal, and then, an instruction is provided for root canal preparation.

A root canal file for tooth filling, comprising a root canal file assembly, the root canal file assembly is connected to a root canal file handle, and the root canal file assembly is rotatably connected to the root canal file handle. The invention reduces the operating space required by the operator, and solves the problems in the prior art caused by the contradiction between the narrow space in the oral cavity and the relatively large operating space required by the operator. The present invention adopts the technical feature of the rotary connection between the root canal file assembly and the root canal file handle, which reduces the operating space required by the operator. In this process, whether it is the exploration and preparation of the molar distal root canal, Or for the exploration and preparation of the mesial root canal of molars, the direction adjustment of the root canal file can be completed only by turning the root canal file assembly, and when the root canal file is pulled, the long handle of the root canal file will not No follow-up, thereby reducing the operating space required by the operator, so that the space in the oral cavity can already meet the operator's unobstructed root canal exploration and preparation operations.

The invention relates to a contra-angle handpiece with a conducting strip arranged in a rear cover and a root canal preparation machine. The contra-angle handpiece with the conducting strip arranged in the rear cover comprises a handpiece, the rear cover, and a cutting tool; a handpiece core assembly used for driving the cutting tool to rotate is arranged inside the handpiece; the conducting stripis arranged inside the rear cover, and the conducting strip comprises a semi-ring body and an elastic part; the semi-ring body is sleeved by the rear cover; the tail end of the elastic part is connected with the middle of the semi-ring body; the front end of the elastic part extends to the center of the semi-ring body; and the front end of the elastic part is in contact with the center of the endface of the cutting tool when the rear cover is fixed to the handpiece.

The invention provides a root canal preparation system. The root canal preparation system comprises a host, a manual preparation machine, a wired preparation machine and a wireless preparation machine, the host comprises a base, a display arranged on the base, a root canal test assembly arranged on the base and a control assembly arranged on the base, and the base is provided with a first positioning structure, a second positioning structure and a third positioning structure which are used for bearing the preparation machines; the manual preparation machine comprises a handle, a machine head, a power mechanism and a clamping mechanism; the wired preparation machine comprises an active machine body electrically connected to the control assembly through a wire, the wireless preparation machine comprises a passive machine body in wireless connection with the control assembly and a replaceable bent machine head connected to one end of the passive machine body, and the replaceable bent machine head is detachably connected with the passive machine body and matched with the active machine body. The root canal preparation system can meet the requirements of manual root canal preparation, wired or wireless electric root canal preparation, root canal measurement and display, is convenient and flexible to use, and can better meet the requirements of root canal treatment on instruments.