WO2022087771A1 - Lime pour canal radiculaire en forme de pyramide polygonale - Google Patents

Lime pour canal radiculaire en forme de pyramide polygonale Download PDF

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Publication number
WO2022087771A1
WO2022087771A1 PCT/CN2020/123594 CN2020123594W WO2022087771A1 WO 2022087771 A1 WO2022087771 A1 WO 2022087771A1 CN 2020123594 W CN2020123594 W CN 2020123594W WO 2022087771 A1 WO2022087771 A1 WO 2022087771A1
Authority
WO
WIPO (PCT)
Prior art keywords
file
root canal
edge
polygonal pyramid
pyramid
Prior art date
Application number
PCT/CN2020/123594
Other languages
English (en)
Chinese (zh)
Inventor
范志勇
蒋俊强
权晶晶
Original Assignee
深圳市雅维医疗器械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市雅维医疗器械有限公司 filed Critical 深圳市雅维医疗器械有限公司
Priority to PCT/CN2020/123594 priority Critical patent/WO2022087771A1/fr
Publication of WO2022087771A1 publication Critical patent/WO2022087771A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
    • A61C5/42—Files for root canals; Handgrips or guiding means therefor

Definitions

  • the utility model relates to the field of root canal treatment instruments, in particular to a polygonal pyramid root canal file.
  • root canal therapy is the most commonly used and effective treatment method for endodontic and periapical diseases, mainly by mechanical and chemical methods to remove most of the infection in the root canal, and through Fill the root canal, seal the crown, prevent the occurrence of periapical lesions, and promote the healing of periapical lesions that have occurred.
  • mechanical method of the root canal treatment process it involves the use of a root canal file by means of which the tooth is pulped for further preparation.
  • the file head of the root canal file in the related art is usually a conical file head, and the conical file head has poor ability to excrete impurities during use, and the impurities easily damage the file head of the root canal file, making the root canal file poor in fatigue resistance. , and it is easy to cause greater trauma to the teeth, thereby reducing the reliability of root canal treatment.
  • the present application provides a polygonal pyramid root canal file, which can solve the technical problems that the root canal file in the prior art has poor ability to excrete impurities and poor fatigue resistance during use.
  • the utility model provides a polygonal pyramid root canal file.
  • the polygonal pyramid root canal file is applied to the root canal treatment of teeth.
  • the polygonal pyramid root canal file comprises: a file handle and a polygonal pyramid file blade portion fixed integrally with the file handle.
  • the polygonal pyramid filing edge portion includes a polygonal pyramid filing edge structure and a file tip portion fixedly connected with an end of the polygonal pyramid filing edge structure away from the file handle, and the polygonal pyramid filing edge structure includes a direction from the file handle to the a plurality of filing edge portions spirally extending in the direction of the file tip portion and a plurality of helical edge grooves respectively arranged adjacent to each of the filing edge portions; spaced along the helical extension direction of each of the filing edge portions
  • the plurality of straight edge portions, the plurality of file edge portions having the straight edge portions, the plurality of spiral edge grooves and the file tip portion form a spiral file edge structure having a polygonal pyramid structure.
  • the polygonal pyramid filing edge structure includes: three filing edge portions and three helical edge grooves, wherein the filing edge portions and the helical edge grooves are arranged at intervals.
  • a plurality of the straight edge parts on the three file edge parts together form a polygonal pyramid file edge part with four file edge sides, and two adjacent straight edge parts on the file edge part The parts are respectively located on the two adjacent side surfaces of the rasps.
  • the top surface of the file tip portion is in a triangular structure
  • the polygonal pyramid file edge portion is a spiral file edge structure with a quadrangular pyramid structure.
  • the polygonal pyramid filing edge structure includes: four filing edge portions and four helical edge grooves, and the filing edge portions and the helical edge grooves are arranged at intervals.
  • a plurality of the straight edge parts on the four file edge parts together form a polygonal pyramid file edge part with four file edge sides, and two adjacent straight edge parts on the file edge part The parts are respectively located on the two adjacent side surfaces of the rasps.
  • the top surface of the file tip portion has a quadrangular structure
  • the polygonal pyramid filing edge portion is a quadrangular spiral polygonal pyramid filing edge structure.
  • the length of the polygonal-pyramid root canal file ranges from 13 to 150 mm, and the width of the edge of the polygonal-pyramid file ranges from 0.15 to 1.5 mm.
  • the material of the polygonal root canal file is cemented carbide.
  • the multi-pyramid root canal file provided by the utility model is applied to the root canal treatment of teeth.
  • the polygonal-pyramid root canal file comprises: a file handle and a polygonal-pyramid file blade part fixed integrally with the file handle; a polygonal-pyramid file blade
  • the portion includes a polygonal pyramid file structure and a file tip portion fixedly connected with one end of the polygonal pyramid file structure away from the file handle.
  • the polygonal pyramid file structure includes a plurality of file edge portions spirally extending from the file handle to the file tip portion, and a plurality of file edges respectively connected to the file handle.
  • the groove and the tip of the file form a spiral file structure with a polygonal pyramid structure.
  • the file portion of the polygonal pyramid root canal file is provided with a plurality of straight edge portions at intervals, and the straight edge portions cooperate with the helical edge groove to form a polygonal-shaped helical file structure.
  • the pyramid-shaped spiral file structure can expand the gap between the root canal file and the pulp opening hole of the tooth, improve the root canal file's ability to excrete impurities, thereby improve the fatigue resistance of the root canal file, and reduce impurities and polygonal pyramid root canals.
  • the damage to the teeth caused by the file shaking is reliable.
  • Fig. 1 is the perspective view of the polygonal pyramid root canal file provided by the first embodiment of the present utility model with three file portions;
  • Fig. 2 is the enlarged schematic diagram of part a of the polygonal pyramid root canal file of the first embodiment of Fig. 1;
  • FIG. 3 is a schematic cross-sectional structure diagram of the polygonal pyramid root canal file along the line A-A of the first embodiment of FIG. 1;
  • Fig. 4 is the sectional structure schematic diagram of the polygonal pyramid root canal file of the first embodiment of Fig. 1 along A'-A' line;
  • FIG. 5 is a perspective view of a polygonal pyramid root canal file with four file cutting edges provided by the second embodiment of the present utility model
  • FIG. 6 is an enlarged schematic view of the structure of part b of the polygonal pyramid root canal file of the second embodiment of FIG. 5;
  • FIG. 7 is a cross-sectional structural schematic diagram of the polygonal pyramid root canal file of the second embodiment of FIG. 5 along the B-B line;
  • Fig. 8 is a schematic cross-sectional structural diagram of the polygonal pyramid root canal file of the second embodiment of Fig. 5 along the line B'-B'.
  • the utility model provides a polygonal pyramid root canal file.
  • the polygonal pyramid root canal file includes: a file handle 10 and a polygonal pyramid file edge portion 20 integrally fixed with the file handle 10.
  • the polygonal pyramid file edge portion 20 includes a polygonal pyramid file edge structure 21 and a multi-pyramid file edge structure 21.
  • the file tip portion 22 of the pyramid file structure 21 is fixedly connected at one end away from the file handle 10 .
  • the polygonal pyramid file structure 21 includes a plurality of file edge portions 211 extending spirally from the file handle 10 to the file tip portion 22 .
  • the polygonal pyramid root canal file is used for root canal treatment of teeth, and is a grinding tool used for root canal treatment of teeth.
  • a cone file is required The pulp is opened to the tooth, and then root canal treatment is performed through the opened pulp cavity.
  • the root canal file is manufactured as a multi-cone root canal file in this implementation.
  • the polygonal-pyramid root canal file includes: a file handle 10 and a polygonal-pyramid file blade portion 20 integrally fixed with the file handle 10, wherein the file handle 10 is an installation part, and the file handle 10 is detachably connected to the corresponding equipment in the field of dentistry.
  • the polygonal pyramid root canal file is installed and fixed on the components of the relevant root canal treatment equipment, such as dental handpieces or root canal therapy instruments and other instruments, the utility model will not be further described;
  • the polygonal pyramid file blade portion 20 includes: 10.
  • the polygonal pyramid file structure 21 combined with the file tip portion 22 is used for grinding the target position of the teeth , to achieve pulp opening for further root canal treatment;
  • the polygonal pyramid file structure 21 includes: one or more file parts 211 and a spiral edge groove 212, the file edge part 211 and the spiral edge groove 212 are arranged adjacent to each other, it should be noted that However, when the polygonal pyramid file structure 21 includes a plurality of file portions 211 and a plurality of helical edge grooves 212, the number of the file portions 211 is equal to the number of the spiral edge grooves 212, and the plurality of file portions 211 and a plurality of helical edge grooves 212.
  • the edge grooves 212 are arranged at intervals on the side surface of the polygonal pyramid file portion 20.
  • the side surface of the polygonal pyramid file edge portion 20 is The structure is arranged as follows: file part 211, spiral edge groove 212, file edge part 211, spiral edge groove 212, file edge part 211, spiral edge groove 212, other numbers of file edge parts 211, spiral edge groove 212 are also in accordance with this
  • a plurality of straight edge portions 211 ′ are arranged at intervals along the helical extension direction of each file portion 211. Compared with the conical root canal file, the file portion 211 is provided with straight edges.
  • the side surface of the root canal file of the portion 211' is in a concave or straight structure as a whole, and the multiple file portions 211, the multiple spiral edge grooves 212 and the file tip portion 22 with the straight edge portion 211' form a spiral with a polygonal pyramid structure.
  • the polygonal pyramid root canal file can be Mitsubishi taper root canal file, quadrangular pyramid root canal file File, pentagonal root canal file, etc., which are not further limited in this embodiment, it should be noted that, in practical clinical application, when the polygonal pyramid root canal file is rotated, the pulp diameter and conical diameter achieved by grinding are The pulp diameter of the body root canal file is the same. Compared with the conical root canal file of the same size, the polygonal root canal file has a gap between it and the pulp diameter cavity, and has a nearly square structure or a polygonal root canal. The file can carry impurities in the spiral file structure.
  • the polygonal pyramidal root canal file can be square or polygonal
  • the minimum width of the aperture during pulp opening can be the width between the two edges on the opposite side of the root canal file, and due to the gap between the polygonal root canal file and the aperture of pulp opening, the opening can be The impurities generated when the pulp is perforated are excreted, reducing the trauma caused by the impurities and the shaking of the polygonal root canal file to the teeth, and improving the reliability of the root canal treatment process.
  • the polygonal pyramid file structure 21 includes: three file parts 211 and three spiral edge grooves 212 , and the file edge parts 211 and the spiral edge grooves 212 are arranged at intervals.
  • the polygonal pyramid filing edge structure 21 includes: three filing edge portions 211 and three helical edge grooves 212, and the three filing edge portions 211 and the three helical edge grooves 212 are arranged at intervals on the polygonal pyramid filing edge portion
  • the side surface of 20, specifically, the side structure of the polygonal pyramid file structure 21 is arranged as follows: file portion 211, spiral edge groove 212, file edge portion 211, spiral edge groove 212, file edge portion 211, spiral edge groove 212.
  • the number of the file parts 211 and the spiral edge grooves 212 included in the polygonal pyramid file structure 21 determines the machining accuracy of the root canal file
  • the type of the polygonal pyramid file structure 21 usually includes three file parts 211 and four file portions 211
  • the number of the helical edge grooves 212 is consistent with the number of the file portions 211 .
  • a corresponding type of root canal file may be selected according to actual requirements, such as anterior teeth, posterior teeth, and target positions on teeth, etc., which will not be further described in this embodiment.
  • the plurality of straight edge portions 211 ′ on the three file edge portions 211 together form a polygonal pyramid file portion 20 with four file edge sides, and the two adjacent straight edge portions 211 ′ on the file edge portions 211 are respectively On the flanks of two adjacent files. It should be noted that, since the straight edge portions 211 ′ are spaced along the extending direction of each file portion 211 , the straight edge portions 211 ′ are formed around the file portion 211 on the root canal file. The straight edge portion 211 ′ occupies the position of the file edge portion 211 corresponding to 90 degrees of the root canal file, that is, the straight edge structure is arranged along the extending direction of the arc file edge portion 211 of the conical root canal file.
  • each straight edge portion 211 ′ is also presented along the extension direction of the file edge portion 211 , and the structure of each straight edge portion 211 ′ occupies the position structure of the file edge portion 211 corresponding to 90 degrees of the root canal file.
  • the polygonal pyramid file portion 20 includes four file side surfaces, each file side surface is composed of a plurality of straight edge portions 211 ′ and a plurality of spiral edge grooves 212 located on the same side, that is, along the extension direction of each file portion 211 Any four consecutive straight edge portions 211 ′ arranged at intervals are respectively on different file edge sides, so as to form a quadrangular pyramid spiral file edge structure.
  • the top surface of the file tip portion 22 is in a triangular structure
  • the polygonal pyramid file portion 20 is a quadrangular pyramid spiral file structure.
  • the number of the file edge portions 211 included in the polygonal pyramid file edge structure 21 is related to the shape of the file core structure of the file edge structure.
  • Three file portions 211 are provided from the file handle 10 to the helical extension direction of the file core portion 213, and each file portion 211 extends around it; it should be noted that the shape of the polygonal pyramid file portion 20 has nothing to do with the structural shape of the file core , in the production process, a straight edge portion 211 ′ can be opened on the file edge portion 211 according to actual needs.
  • the file edge structure surrounding the root canal file is formed every 90 degrees.
  • the straight edge portion 211 ′ is opened, and the straight edge portion 211 ′ on every 90 degrees of the file structure of the root canal file is located on the same side view from the file handle 10 to the file tip portion 22 , so that the polygonal pyramid file portion 20 is a quadrangular pyramid spiral file structure.
  • the tip portion of the file in this embodiment may also be a quadrilateral, a polygon, etc., which will not be further described in this embodiment.
  • the polygonal pyramid file structure 21 includes: four file portions 211 and four spiral edge grooves 212, the file portion 211 and the spiral edge grooves 212 are arranged at intervals .
  • the polygonal pyramid filing edge structure 21 includes: four filing edge portions 211 and four helical edge grooves 212 , and the four filing edge portions 211 and the four helical edge grooves 212 are arranged at intervals on the polygonal pyramid filing edge portion
  • the side of 20, specifically, the side structure of the polygonal pyramid filing portion 20 is arranged as follows: filing portion 211, spiral edge groove 212, filing edge portion 211, spiral edge groove 212, filing edge portion 211, spiral edge groove 212, File portion 211 , spiral groove 212 .
  • the number of file parts 211 included in the pyramid file structure is related to the shape of the file core structure of the file edge structure.
  • the shape structure of the file core of the file edge structure is a quadrangular pyramid structure or a nearly quadrangular pyramid structure
  • the polygonal pyramid file edge structure 21 is There are four file portions 211 , each file portion 211 extending spirally around the file structure from the file shank 10 to the file tip portion 22 .
  • the plurality of straight edge portions 211 ′ on the four file edge portions 211 together form a polygonal pyramid file portion 20 with four file edge sides, and the two adjacent straight edge portions 211 ′ on the file edge portions 211 are respectively On the flanks of two adjacent files.
  • the straight edge portions 211 ′ are spaced along the extending direction of each file portion 211 , the straight edge portions 211 ′ are formed around the file portion 211 on the root canal file, wherein each straight edge The portion 211' occupies the position of the file portion 211 corresponding to 90 degrees of the root canal file, that is, a straight edge structure is provided along the extending direction of the arc file portion 211 of the conical file, and then the file is opened in a circle around the root canal file. There are four straight edges, and a straight edge structure is provided at the position of the file portion 211 corresponding to every 90 degrees. It should be noted that since each file portion 211 is spirally extended from the file handle 10 to the file tip portion 22.
  • each straight edge portion 211 ′ is also presented along the extension direction of the file edge portion 211 , and the structure of each straight edge portion 211 ′ occupies the position structure of the file edge portion 211 corresponding to 90 degrees of the root canal file. Therefore, the polygonal pyramid
  • the filing edge portion 20 includes four filing edge side surfaces, and each filing edge side surface is composed of a plurality of straight edge portions 211 ′ and a plurality of helical edge grooves 212 located on the same side, that is, they are spaced along the extending direction of each filing edge portion 211 . Any continuous four straight edge portions 211 ′ are respectively on different file edge sides, so as to form a quadrangular pyramid spiral file edge structure.
  • the quadrangular pyramid root canal file Compared with the conical root canal file of the same size, the quadrangular pyramid root canal file has a gap between it and the pulp diameter cavity, which can improve the ability of the polygonal pyramid root canal file to excrete impurities and prevent impurities from affecting the high-speed rotating polygonal root canal root canal file.
  • the file blade portion 211 of the file is damaged, which reduces the fatigue resistance of the root canal file and improves the reliability during root canal treatment.
  • the top surface of the file tip portion 22 has a quadrangular structure
  • the polygonal pyramid filing edge portion 20 is a quadrangular spiral polygonal pyramid filing edge structure 21 .
  • the number of file parts 211 included in the polygonal pyramid file structure 21 is related to the shape of the file core structure of the file edge structure. 10.
  • Four filing edge portions 211 are arranged in the helical extension direction of the file core portion 213, and each file edge portion 211 extends around; In the manufacturing process, a straight edge portion 211 ′ can be provided on the file edge portion 211 according to actual needs.
  • the shape of the polygonal pyramid file edge portion 20 is a quadrangular pyramid structure
  • a straight edge is provided every 90 degrees around the file edge structure of the root canal file.
  • the straight edge part 211 ′ on every 90 degrees of the file structure of the root canal file is located on the same side view from the file handle 10 to the file tip part 22 , so that the polygonal pyramid file part 20 is a quadrangular pyramid spiral file Blade structure.
  • the length of the polygonal pyramid root canal file ranges from 13 to 150 mm, and the width of the edge portion 20 of the polygonal pyramid file ranges from 0.15 to 1.5 mm.
  • the corresponding polygonal pyramid root canal file selects the corresponding polygonal pyramid root canal file. 1.5mm, exemplarily, when the root canal treatment object is a human, a polygonal root canal file with a smaller size, such as 13mm, is selected.
  • a polygonal pyramid root of the corresponding specification is selected according to the animal's teeth.
  • Pipe file This embodiment protects a variety of polygonal pyramidal root canal files of different specifications, and the selection criteria for the specifications of the polygonal pyramidal root canal file will not be further described.
  • the material of the polygonal pyramid root canal file is cemented carbide.
  • the material of the polygonal pyramid root canal file is limited to be processed and manufactured by hard alloy, and the polygonal pyramid root canal file processed by this material has the advantages of high temperature resistance, good wear resistance and high fatigue resistance.
  • the multi-pyramid root canal file provided by the utility model is applied to the root canal treatment of teeth.
  • the polygonal-pyramid root canal file comprises: a file handle and a polygonal-pyramid file blade part fixed integrally with the file handle; a polygonal-pyramid file blade
  • the portion includes a polygonal pyramid file structure and a file tip portion fixedly connected with one end of the polygonal pyramid file structure away from the file handle.
  • the polygonal pyramid file structure includes a plurality of file edge portions spirally extending from the file handle to the file tip portion, and a plurality of file edges respectively connected to the file handle.
  • the groove and the tip of the file form a spiral file structure with a polygonal pyramid structure.
  • the file portion of the polygonal pyramid root canal file is provided with a plurality of straight edge portions at intervals, and the straight edge portions cooperate with the helical edge groove to form a polygonal-shaped helical file structure.
  • the pyramid-shaped spiral file structure can expand the gap between the root canal file and the pulp opening hole of the tooth, improve the root canal file's ability to excrete impurities, thereby improving the fatigue resistance of the root canal file, reducing impurities and the polygonal pyramid root canal file.
  • the trauma to the teeth when shaking is reliable.
  • the disclosed structure of the polygonal pyramid root canal file can be presented by other structures, such as not limited to the quadrangular pyramid root canal file, but also the root canal file of the triangular pyramid structure.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Le présent modèle d'utilité concerne une lime pour canal radiculaire en forme de pyramide polygonale. La lime pour canal radiculaire en forme de pyramide polygonale est appliquée dans une thérapie radiculaire dentaire. La lime pour canal radiculaire en forme de pyramide polygonale comprend une poignée de lime et une lame de lime en forme de pyramide polygonale fixée d'un seul tenant à la poignée de lime ; la lame de lime en forme de pyramide polygonale comprend une structure de lame de lime en forme de pyramide polygonale et une pointe de lime reliée de manière fixe à l'extrémité de la structure de lame de lime en forme de pyramide polygonale à distance de la poignée de lime ; la structure de lame de lime en forme de pyramide polygonale comprend de multiples bords de coupe de lime s'étendant de manière hélicoïdale dans une direction allant de la poignée de lime à la pointe de lime, et de multiples cannelures hélicoïdales disposées respectivement de manière adjacente aux bords de coupe de lime ; de multiples parties de bord de coupe droites sont disposées le long de la direction d'extension hélicoïdale de chaque bord de coupe de lime à des intervalles ; les multiples bords de coupe de lime comprennent les parties de bord de coupe droites, les multiples cannelures hélicoïdales et la pointe de lime formant la lame de lime hélicoïdale d'une structure en forme de pyramide polygonale. Selon la lime pour canal radiculaire dans la présente solution, les parties de bord de coupe droites fournies conjointement avec les cannelures hélicoïdales forment une structure de lame de lime hélicoïdale polygonale en forme de pyramide ; la structure de lame de lime hélicoïdale polygonale en forme de pyramide peut agrandir l'espace entre la lime pour canal radiculaire et un trou dans la pulpe d'une dent, améliore la capacité d'élimination d'impuretés et la résistance à la fatigue de la lime pour canal radiculaire, et apporte de la fiabilité.
PCT/CN2020/123594 2020-10-26 2020-10-26 Lime pour canal radiculaire en forme de pyramide polygonale WO2022087771A1 (fr)

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PCT/CN2020/123594 WO2022087771A1 (fr) 2020-10-26 2020-10-26 Lime pour canal radiculaire en forme de pyramide polygonale

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PCT/CN2020/123594 WO2022087771A1 (fr) 2020-10-26 2020-10-26 Lime pour canal radiculaire en forme de pyramide polygonale

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762497A (en) * 1996-03-07 1998-06-09 Tulsa Dental Products Endodontic dental instrument
US20050272004A1 (en) * 2004-06-08 2005-12-08 Ormco Corporation Non-landed endodontic instrument and methods of making such endodontic instruments
US20070031784A1 (en) * 2005-08-02 2007-02-08 Berutti Elio V G Endodontic reamer / file having reduced torque demands
US20170265964A1 (en) * 2016-03-15 2017-09-21 Essential Dental Systems, Inc. Non-circular endodontic instruments
CN206995351U (zh) * 2017-02-23 2018-02-13 四川省海纳联创医疗器械有限公司 一种治疗根管的高效率根管锉
CN209884369U (zh) * 2018-05-29 2020-01-03 苏州派克顿科技有限公司 微创根管锉
CN211460595U (zh) * 2019-12-18 2020-09-11 上海双申医疗器械股份有限公司 尖端优化的根管锉

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762497A (en) * 1996-03-07 1998-06-09 Tulsa Dental Products Endodontic dental instrument
US20050272004A1 (en) * 2004-06-08 2005-12-08 Ormco Corporation Non-landed endodontic instrument and methods of making such endodontic instruments
US20070031784A1 (en) * 2005-08-02 2007-02-08 Berutti Elio V G Endodontic reamer / file having reduced torque demands
US20170265964A1 (en) * 2016-03-15 2017-09-21 Essential Dental Systems, Inc. Non-circular endodontic instruments
CN206995351U (zh) * 2017-02-23 2018-02-13 四川省海纳联创医疗器械有限公司 一种治疗根管的高效率根管锉
CN209884369U (zh) * 2018-05-29 2020-01-03 苏州派克顿科技有限公司 微创根管锉
CN211460595U (zh) * 2019-12-18 2020-09-11 上海双申医疗器械股份有限公司 尖端优化的根管锉

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