17 results about "Root canal length" patented technology

The embodiment of the invention discloses a root canal feature form extraction method, device and equipment based on CBCT data and a medium, and belongs to the technical field of stomatology and medical image.The method comprises the steps that filtering denoising and dental pulp segmentation processing are carried out on a CBCT image, and surface drawing three-dimensional reconstruction is carried out on a tooth root canal to generate a three-dimensional model; based on regular point cloud data in the three-dimensional model, adopting a point-surface method to realize curved surface reconstruction, and generating a root canal entity model; and performing coordinate alignment processing on the root canal solid model in a three-dimensional space, and measuring the length of the root canal, the direction of a root canal orifice, the curvature of the root canal and the depth of dental pulp by fitting the approximate center line of the root canal. According to the method, the corresponding three-dimensional model is quickly reconstructed based on the CBCT cross-sectional image obtained by scanning the teeth of the patient, and related data such as the dental pulp depth and the size of the root canal orifice are acquired from the three-dimensional model of the teeth so as to assist the oral surgery.

The present invention discloses a root canal file, comprising: a root canal file body, wherein the root canal file body is provided with an effective blade, an insulating covering part, a handle setting part, and a measuring metal part, wherein the effective blade, the insulating covering part, the handle setting part, and the measuring metal part are arranged in sequence, and the effective blade is provided with a thread; an insulating structure, wherein the insulating structure is provided with an insulating handle and an insulating covering film; the insulating covering film covers the insulating covering part, and the insulating handle covers the handle setting part. The insulating covering film can prevent the metal part of the root canal file from contacting the metal crown of the patient, thereby preventing the root canal length measuring instrument from short-circuiting or alarming, thereby protecting the root canal length measuring instrument and increasing the service life of the root canal length measuring instrument. When the front end of the effective blade contacts the periapical membrane, the root canal length measuring instrument displays that a current loop is formed.

Embodiments of the present application disclose a method and device for extracting root canal feature morphology based on CBCT data, equipment and medium, belong to the field of oral medicine and medical image technology, wherein the method comprises: filtering and denoising CBCT images and performing pulp segmentation processing, and performing surface rendering three-dimensional reconstruction on tooth root canals to generate a three-dimensional model; based on the regular point cloud data in the three-dimensional model, a point-surface method is used to realize surface reconstruction to generate a root canal entity model; the root canal entity model is subjected to coordinate alignment processing in a three-dimensional space, and the approximate center line of the fitted root canal is used to measure the root canal length, root canal opening direction, root canal curvature and pulp depth. The present application quickly reconstructs the corresponding three-dimensional model based on the CBCT tomographic images obtained by scanning the teeth of a patient, and obtains relevant data such as pulp depth and root canal opening size from the three-dimensional model of the teeth to assist the performance of oral surgery.

A dental treatment apparatus according to the present invention includes a drive unit that includes a micromotor, a motor driver, and the like, a controller, and a root canal length measurement circuit. The controller controls the cutting tool to be held at a head forward driven in a direction of cutting of an object to be cut. The controller also controls the cutting tool to be reverse driven in a direction reverse to forward rotation drive when the cutting tool is forward driven and the root canal length measurement circuit detects a tip end of the cutting tool reaching a reference position. The controller further carries out a fail-safe control when the cutting tool is reverse driven and the root canal length measurement circuit detects movement of the tip end of the cutting tool toward a root apex position.

1. The name of the product under this design is: Root Canal Length Measuring Instrument (C-ROOT I (V)). 2. Purpose of this design product: Used as a tool for measuring root canal length during dental treatment. 3. The key design points of this design product: The key design points of this design patent lie in the overall appearance of the product. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a root canal file which comprises a root canal file body, the root canal file body is provided with an effective blade part, an insulation covering part, a handle arranging part and a measuring metal part, the effective blade part, the insulation covering part, the handle arranging part and the measuring metal part are arranged in sequence, and the effective blade part is provided with threads; the insulation structure is provided with an insulation handle and an insulation covering film; the insulating covering film wraps the insulating covering part, and the insulating handle wraps the handle setting part. The insulating covering film can prevent the metal part of the root canal file from being in contact with the metal dental crown of the patient, so that short circuit or alarm of the root canal length measuring instrument is avoided, the root canal length measuring instrument can be protected, and the service life of the root canal length measuring instrument is prolonged. When the front end of the effective blade part is in contact with the periapical membrane, the root canal length measuring instrument shows that a current loop is formed.

A telescopic root canal preparation machine relates to the field of dental equipment and comprises a shell assembly and a machine head assembly, the machine head assembly is mounted on the shell assembly, and the machine head assembly and the shell assembly are slidably matched in the extension direction of a preset axis so as to adjust the length of the machine head assembly extending out of the shell assembly; the machine head assembly is used for installing a work tip. According to the structural design of the preparation machine, the shape can be adjusted according to needs, so that the preparation machine can be matched with the lengths and shapes of root canals of different patients, the treatment effect is better, and the treatment time is saved.

The invention discloses a root canal treatment teaching mold capable of positioning a root tip dead point and a manufacturing method thereof, a conducting medium channel is arranged in an oral cavity mold body, and a super-absorbent polymer material is filled in the channel, so that the material absorbs water and expands to form a stable gel conducting environment, and the oral cavity mold body can be used for teaching the root canal treatment. When the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and abuts against the conductive medium, the root canal file and the conductive electrode are electrically connected in the gel conductive environment, and therefore the electrical measurement positioning operation of the root tip dead point is achieved. Compared with the phenomena of instability, frequent signal interference and the like caused by a liquid conductive environment established by adopting a liquid conductive medium, the mold improves the stability and repeatability of root measurement signal response through the cooperation of a structure-closed conductive path and a controllable gel medium. In addition, the device can be fixed to a simulated head mold, and the purposes of truly simulating a clinical patient to carry out a root tip dead center positioning scene and carrying out simulation training on the whole root canal treatment process are achieved.

The present disclosure relates to a method, device, equipment and medium for determining the length of a root canal. The method comprises: using a root canal instance segmentation model to segment a three-dimensional scanned image of a tooth to be repaired, obtaining a root canal instance segmentation map, and generating a root canal three-dimensional model of a target root canal in the tooth to be repaired based on the root canal instance segmentation map; using a feature extraction model to extract feature points of the three-dimensional scanned image to generate a target feature map; according to the number of root canals contained in the root canal instance segmentation map, obtaining the root canal key points of the target root canal from the feature points contained in the target feature map; based on the coordinate data of the root canal key points and the root canal instance segmentation map, obtaining the root canal orifice key points and the root canal apex key points from the root canal key points; based on the root canal three-dimensional model of the target root canal, the coordinate data of the root canal orifice key points of the target root canal and the coordinate data of the root canal apex key points of the target root canal, calculating the root canal length of the target root canal. Thus, the accuracy of the root canal length measurement is improved.

1. The name of the design product: root canal length measuring instrument. 2. The use of the design product: used to measure the working length of root canal during dental root canal treatment. 3. The design features of the design product: the shape of the product shown in the views of the drawings. 4. The picture or photo that best indicates the design features: perspective view 1.

Medical system, storage medium, notification method of warning, and acceptance method. In a dental treatment system, a root canal length measuring device has a wireless communication unit that transmits data related to treatment to a tablet computer, a display that displays graphics or text corresponding to the data, and a control unit that causes the root canal length measuring device to notify a warning in a notification mode of visual notification and auditory notification if the data satisfies a warning condition. The tablet computer has a wireless communication unit that receives data from the root canal length measuring device, a touch panel display that displays graphics or text corresponding to the data, and a control unit that causes the tablet computer to notify a warning in only a part of the notification modes performed in the root canal length measuring device if the data satisfies the warning condition.

1. Name of the product in this design: Root Tip Electronic Analyzer. 2. Purpose of this design: A tool for measuring root canal length during dental treatment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a kind of endodontic root canal therapy dilatation needle limiters, including handle, the upper end of the handle is fixedly connected with fixed ring, and fixed ring is fixedly connected with connecting rope on it, the lower end of the handle is fixedly connected with the body of being checked, and the upper end outside of the body of being checked is clamped with limit ring, the limit ring is fixedly connected with clamping block on it.The existence of limit ring can accurately limit the depth of the body of being checked into root canal, in the root canal treatment process, the root canal length of different teeth is different, by adjusting the position of limit ring, it can be ensured that the operation of dilatation needle in root canal is always in safe range, avoid excessive deep damage root apex tissue or beyond root canal cause unnecessary trauma, for molar and other root canal deeper teeth, limit ring can be adjusted to appropriate position, prevent dilatation needle from exceeding root apex hole in root canal preparation process, reduce the risk of occurrence of complications such as periapical periodontitis.

The utility model relates to the technical field of root canal length measurement, in particular to a dental root canal length measuring instrument based on an Android system APP, which comprises a lip hook and a root canal file and further comprises a signal collector, and a measuring line group is connected between the signal collector and the lip hook and between the signal collector and the root canal file. The signal collector comprises an Android interface, a two-way operational amplifier, a data memory and an audio decoding chip, the Android interface is electrically connected with an Android APP, the Android APP comprises a waveform generation module and a data calculation module, the waveform generation module generates sine wave signals, and the audio decoding chip performs digital-to-analog conversion of waveform signals between the Android APP and the end part of the root canal file. The Android APP is connected with the signal collector through the measuring line set, the waveform generation module sends a waveform to the root canal file to make contact with the root tip for positioning, data returned by the root tip position is calculated by the data calculation module, measurement and calculation are integrated in the APP, the calculation speed is high, stability is high, and the root tip positioning process is conveniently observed and recorded in real time.

1. Name of the Design Product: Electronic Device with Dynamic Graphical User Interface for Root Canal Treatment. 2. Use of the Design Product: An electronic device. 3. Design Key Points of the Design Product: Lies in the graphical user interface. 4. Picture or Photograph that Best Illustrates the Design Key Points: Front View of Design 1. 5. Design 1 is designated as the basic design. 6. Use of the Graphical User Interface: The interface is used to assist dentists in completing root canal treatment and measuring the length of tooth root canals. 7. Description of the changing states of the graphical user interface: Design 1 is for adjusting the volume of the device. The main view of Design 1 is the interface after the system starts. Long press the "Settings" icon in the main view of Design 1 for 2 seconds, and the interface changes to the Interface Change State Diagram 1 of Design 1; click the "Volume" icon in the Interface Change State Diagram 1 of Design 1, and the interface changes to the Interface Change State Diagram 2 of Design 1; drag the volume bar in the Interface Change State Diagram 2 of Design 1, and the interface changes to the Interface Change State Diagram 3 of Design 1; Design 2 is for setting the time. The main view of Design 2 is the interface after the system starts. Long press the "Settings" icon in the main view of Design 2 for 2 seconds, and the interface changes to the Interface Change State Diagram 1 of Design 2; click the "T" time icon in the Interface Change State Diagram 1 of Design 2, and the interface changes to the Interface Change State Diagram 2 of Design 2; drag the time bar in the Interface Change State Diagram 2 of Design 2, and the interface changes to the Interface Change State Diagram 3 of Design 2; Design 3 can adjust the screen brightness. The main view of Design 3 is the interface after the system starts. Long press the "Settings" icon in the main view of Design 3 for 2 seconds, and the interface changes to the Interface Change State Diagram 1 of Design 3; click the "Brightness" icon in the Interface Change State Diagram 1 of Design 3, and the interface changes to the Interface Change State Diagram 2 of Design 1; drag the brightness bar in the Interface Change State Diagram 2 of Design 3, and the interface changes to the Interface Change State Diagram 3 of Design 1; Design 4 is the root apex reference point selection interface. The main view of Design 4 is the interface after entering the root apex reference point selection. Click the "Settings" icon in the main view of Design 4, and the interface changes to the Interface Change State Diagram 1 of Design 4; the user can drag the reference point downwards, and the interface changes sequentially from the Interface Change State Diagram 1 of Design 4 to the Interface Change State Diagram 5 of Design 4 to set the root apex reference point; Design 5 is for measuring the root canal length. The main view of Design 5 is the interface after the user enters the root canal length measurement. As the user slowly inserts the measuring file needle into the root canal and slowly moves it downwards, the interface changes sequentially from the main view of Design 5 to the Interface Change State Diagram 6 of Design 5. When the interface shows the Interface Change State Diagram 6 of Design 5, it means that the measuring file needle has entered the apical foramen area; when the measuring file needle continues to move downwards, the interface changes to the Interface Change State Diagram 7 of Design 5, prompting the user that the measuring file needle has exceeded the apical foramen and entered the overfilled area; Design 6 is a demonstration screen. The main view of Design 6 is the interface after the system starts. Click the "Start" icon on the left side of the main view of Design 6, and the interface changes sequentially from the Interface Change State Diagram 1 of Design 6 to the Interface Change State Diagram 7 of Design 6 to demonstrate the movement trajectory of the root canal file.

A gutta percha point and an apparatus for measuring the length of a root canal in a root canal procedure. The gutta percha point includes a head, a neck, a body, and a tail. The neck has a coating of conductive material to which one electrode of the apparatus can be electrically clamped. The tip also includes a layer of conductive material. One or more conductive paths are formed integral to the body extending between the neck and the tail. The gutta percha cone can be used to measure the length of the root canal as well as for filling the tooth cavity.

A dental treatment apparatus includes a holder, a power supply, root canal length measurement circuitry, and control circuitry. The holder holds an electrode placed in a root canal. The power supply energizes file with a high-frequency current. The root canal length measurement circuitry electrically measures a position of a distal end of electrode in the root canal. The control circuitry causes, in accordance with information on the position of the distal end of the electrode measured by root canal length measurement circuitry, the power supply to control a current value of the high-frequency current which energizes the electrode.