CN112690912A - Guide plate for pile core dismantling and preparation method thereof - Google Patents

Guide plate for pile core dismantling and preparation method thereof Download PDF

Info

Publication number
CN112690912A
CN112690912A CN202110038785.1A CN202110038785A CN112690912A CN 112690912 A CN112690912 A CN 112690912A CN 202110038785 A CN202110038785 A CN 202110038785A CN 112690912 A CN112690912 A CN 112690912A
Authority
CN
China
Prior art keywords
pile
guide plate
core
guide
preparation
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202110038785.1A
Other languages
Chinese (zh)
Inventor
于海洋
楼雨欣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan University
Original Assignee
Sichuan University
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 Sichuan University filed Critical Sichuan University
Priority to CN202110038785.1A priority Critical patent/CN112690912A/en
Publication of CN112690912A publication Critical patent/CN112690912A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • A61C5/46—Nerve extractors, e.g. needles; Means for removing broken parts of endodontic instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H30/00—ICT specially adapted for the handling or processing of medical images
    • G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Manufacturing & Machinery (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Optics & Photonics (AREA)
  • Primary Health Care (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

The invention discloses a guide plate for removing a pile core and a preparation method thereof, wherein the preparation method comprises the following steps: s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment; s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model; s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core; and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate. The guide plate is used for pile core removal, so that the problems of insufficient precision, deviation from a long shaft and great damage to tooth bodies in the traditional pile removal technology can be solved, and the aims of quickly and accurately removing the pile and protecting the tooth body tissues are fulfilled.

Description

Guide plate for pile core dismantling and preparation method thereof
Technical Field
The invention relates to the technical field of dentistry, in particular to a guide plate for removing a pile core and a preparation method thereof.
Background
When the tooth tissue is damaged in a large area, especially under the condition that the residual tooth tissue of the affected tooth after the root canal treatment is insufficient or the intensity is insufficient, the post-nuclear crown is the main repairing method for retaining the residual crown and the residual root and recovering the appearance shape and the function of the residual crown. The post-core crown is used for firmly combining the tooth root and the post core into an organic whole through an adhesive, and remaining tooth roots and the artificial dental crown are fixedly connected by means of the retention of the root canal and the pulp cavity, so that the aim of repairing is fulfilled.
However, clinically, patients who need to remove the core of the post and perform treatment again due to root tip lesion, secondary caries, loss of retention force, nucleus fracture, pile fracture or looseness and the like are often seen.
At present, when a clinician takes out a pile from a root canal, a high-speed turbine drill is generally adopted to cut a circle of narrow groove around the crown of the pile, or an ultrasonic instrument is used for vibrating the pile to release a binder. However, the high-speed turbo drill excessively abrades the tooth tissues, the root canal mouth is too wide, and the root perforation and the fracture are easily caused; the ultrasonic vibration hardly has the vibration loosening effect on some adhesives. Therefore, how to remove the core rapidly and effectively without destroying the tooth body is one of the difficulties faced by the dentist of mouth rehabilitation.
Disclosure of Invention
The guide plate is used for pile core removal, can solve the problems of insufficient precision, deviation from a long shaft and great damage to tooth bodies of the traditional pile removal technology, and achieves the purposes of quickly and accurately removing the pile and protecting the tooth body tissues.
The invention is realized by the following technical scheme:
the preparation method of the guide plate for removing the pile core comprises the following steps:
s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment;
s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;
s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core;
and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.
The invention firstly uses the digitization technology and the 3D printing technology for manufacturing the dental guide plate, and improves the precision of the pile core dismantling operation.
The guide plate prepared by the method is used for the pile core dismantling operation, the direction and the depth of the entering of the machine needle are controlled through the guide of the guide plate, the problems of insufficient accuracy, deviation from a long shaft and great damage to tooth bodies of the traditional pile dismantling technology are solved, and the purposes of quickly and accurately dismantling the pile and protecting the tooth body tissues are achieved.
The invention generates the operation guide plate by a digital 3D printing technology, can complete operation design before operation according to an expected repair target, and transfers a plan before operation to guide the completion of the operation in the operation.
Further, in step S3, the specific design process of the pile core removing guide plate is as follows:
designing a guide sleeve based on the target pile core and the selected needle, wherein the diameter of the guide sleeve is the same as the outer diameter of the selected needle; and drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core to remove the guide plate.
Further, the dental scanning device includes 3shape, Shining3D DentalScan.
Further, the method comprises the step of sequentially carrying out heat treatment and post-treatment on the guide plate formed by 3D printing.
Further, the specific process of the heat treatment is as follows:
preserving the heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace.
Further, the specific process of the post-treatment is as follows:
soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.
The guide plate for removing the pile core comprises a guide plate main body, and a guide sleeve for penetrating a needle is arranged on the guide plate main body.
Further, the thickness of the guide plate main body is 1.5-2mm, the thickness of the guide sleeve is 1.5mm, and the inner diameter of the guide sleeve is the same as the outer diameter of the sewing needle.
Further, the pile core removing guide plate is made of resin materials.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention completes the removal of the pile core through the guide plate, and solves the problems of high randomness and large error caused by the fact that a clinician removes the pile core according to experience.
2. The invention transfers the preoperative plan to the operation through a digital technology, and simultaneously accurately controls the path of the needle through the guide plate, thereby avoiding excessive wear of the tooth tissue caused by the traditional high-speed turbine drill or ultrasonic removal and conforming to the repairing concept of minimally invasive.
3. The invention has simple and convenient operation, can greatly reduce the time of clinical operation of a clinician, simultaneously improves the treatment experience of a patient, and can be popularized and used in clinic.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of a digital model obtained by the present invention;
FIG. 3 is a schematic view of a virtual pile-core demolition scheme designed by the present invention;
fig. 4 is a front view of the pile core removing guide plate designed by the invention.
Reference numbers and corresponding part names in the drawings:
1-guide plate main body, 2-guide sleeve and 3-needle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1, the preparation method of the guide plate for removing the pile core comprises the following steps:
s1, acquiring DICOM data of the oral cavity and broken piles of the patient by shooting CBCT, and acquiring a preoperative model by using a dental scanning device, as shown in figure 2, wherein the dental scanning device comprises 3shape, Shining3D DentalScan;
s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;
s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core, wherein a virtual pile-core removing scheme designed based on the generated pile-core removing guide plate is shown in FIG. 3;
the concrete design process of the pile core removing guide plate is as follows:
designing a guide sleeve 3 based on the target core and the selected needle 3, the diameter of the guide sleeve 2 being the same as the outer diameter of the selected needle 3; drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core dismantling guide plate;
and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.
As shown in fig. 4, the guide for removing the pile core prepared in this embodiment includes a guide body 1, and a guide sleeve 2 for passing a needle 3 is provided on the guide body 1; the thickness of the guide plate main body 1 is 1.5-2mm, the thickness of the guide sleeve 2 is 1.5mm, and the inner diameter of the guide sleeve 2 is the same as the outer diameter of the sewing needle 3; the guide plate for removing the pile core is made of resin materials.
The guide plate prepared by the embodiment is used for removing the pile core, the direction and the depth of the guide plate for guiding and controlling the needle 3 to enter are used for solving the problems of insufficient accuracy, deviation of a long shaft and great damage to the tooth body in the traditional pile removing technology, and the purpose of quickly and accurately removing the pile and simultaneously protecting the tooth body tissue is achieved.
Example 2:
as shown in fig. 1, the present embodiment is based on embodiment 1, and further includes sequentially performing heat treatment and post-treatment on the 3D printing-formed guide plate; the specific process of the heat treatment is as follows:
preserving heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace;
the post-treatment comprises the following specific processes:
soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.
In the present embodiment, the performance of the guide plate can be improved by sequentially performing the heat treatment and the post-treatment on the guide plate.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The preparation method of the guide plate for removing the pile core is characterized by comprising the following steps of:
s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment;
s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;
s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core;
and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.
2. The method for preparing the guide plate for removing the pile core according to claim 1, wherein in the step S3, the concrete design process of the guide plate for removing the pile core is as follows:
designing a guide sleeve (3) based on the target pile core and the selected needle (3), wherein the diameter of the guide sleeve (2) is the same as the outer diameter of the selected needle (3); and drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core to remove the guide plate.
3. The method for preparing a guide plate for removing a pile core according to claim 1, wherein the dental scanning equipment comprises 3shape, Shining3D DentalScan.
4. The method for preparing the guide plate for removing the pile core according to claim 1, further comprising sequentially performing heat treatment and post-treatment on the guide plate formed by 3D printing.
5. The preparation method of the guide plate for removing the pile core according to claim 4, wherein the heat treatment comprises the following specific processes:
preserving the heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace.
6. The preparation method of the guide plate for removing the pile core according to claim 4, wherein the post-treatment comprises the following specific processes:
soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.
7. The pile-core removal guide plate manufactured by the manufacturing method of any one of claims 1 to 6.
8. The pile-core removal guide according to claim 7, characterized in that it comprises a guide body (1), on which guide body (1) a guide sleeve (2) for passing a needle (3) is provided.
9. The pile-core removal guide plate according to claim 7, characterized in that the thickness of the guide plate body (1) is 1.5-2mm, the thickness of the guide sleeve (2) is 1.5mm, and the inner diameter of the guide sleeve (2) is the same as the outer diameter of the needle (3).
10. The pile-core removal guide plate according to claim 7, wherein the pile-core removal guide plate is made of a resin material.
CN202110038785.1A 2021-01-12 2021-01-12 Guide plate for pile core dismantling and preparation method thereof Pending CN112690912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110038785.1A CN112690912A (en) 2021-01-12 2021-01-12 Guide plate for pile core dismantling and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110038785.1A CN112690912A (en) 2021-01-12 2021-01-12 Guide plate for pile core dismantling and preparation method thereof

Publications (1)

Publication Number Publication Date
CN112690912A true CN112690912A (en) 2021-04-23

Family

ID=75514241

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110038785.1A Pending CN112690912A (en) 2021-01-12 2021-01-12 Guide plate for pile core dismantling and preparation method thereof

Country Status (1)

Country Link
CN (1) CN112690912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114366349A (en) * 2022-02-18 2022-04-19 四川大学 Manufacturing method of residual root and residual crown pile core shaping and repairing guide plate and guide plate

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318709A1 (en) * 1987-11-28 1989-06-07 Christoph Dr. Paetzold Instrument for extracting the roots of fractured teeth
US20120028213A1 (en) * 2010-08-02 2012-02-02 Meitner Sean W Method and apparatus for bending a guide post used in forming a template for locating a dental inplant hole
US20130171580A1 (en) * 2010-02-18 2013-07-04 Maillefer Instruments Holding Sarl 3d digital endodontics
KR101662819B1 (en) * 2015-06-22 2016-10-05 경북대학교 산학협력단 Implant hole formed guide template and method for manufacturing thereof
CN107802358A (en) * 2017-09-19 2018-03-16 广州医科大学附属口腔医院（广州医科大学羊城医院） A kind of CT formulas tip of a root surgical operation guide plate and its application
US20180110595A1 (en) * 2012-01-23 2018-04-26 C. John Munce Method for the guided removal of dental posts
CN108618854A (en) * 2017-10-27 2018-10-09 北京大学口腔医学院 A kind of Digital Design production method of apical leakage guide plate
CN110314003A (en) * 2019-07-05 2019-10-11 四川大学 The production method and guidance bonding guide plate of digitlization plantation guidance bonding guide plate
CN211433393U (en) * 2019-12-03 2020-09-08 厦门医学院附属口腔医院(厦门市口腔医院) Demolish cast pile device
CN111981980A (en) * 2020-08-18 2020-11-24 重庆医科大学附属口腔医院 Method and system for testing suitability deviation of dental prosthesis CAD and manufacturing process

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318709A1 (en) * 1987-11-28 1989-06-07 Christoph Dr. Paetzold Instrument for extracting the roots of fractured teeth
US20130171580A1 (en) * 2010-02-18 2013-07-04 Maillefer Instruments Holding Sarl 3d digital endodontics
US20120028213A1 (en) * 2010-08-02 2012-02-02 Meitner Sean W Method and apparatus for bending a guide post used in forming a template for locating a dental inplant hole
US20180110595A1 (en) * 2012-01-23 2018-04-26 C. John Munce Method for the guided removal of dental posts
KR101662819B1 (en) * 2015-06-22 2016-10-05 경북대학교 산학협력단 Implant hole formed guide template and method for manufacturing thereof
CN107802358A (en) * 2017-09-19 2018-03-16 广州医科大学附属口腔医院（广州医科大学羊城医院） A kind of CT formulas tip of a root surgical operation guide plate and its application
CN108618854A (en) * 2017-10-27 2018-10-09 北京大学口腔医学院 A kind of Digital Design production method of apical leakage guide plate
CN110314003A (en) * 2019-07-05 2019-10-11 四川大学 The production method and guidance bonding guide plate of digitlization plantation guidance bonding guide plate
CN211433393U (en) * 2019-12-03 2020-09-08 厦门医学院附属口腔医院(厦门市口腔医院) Demolish cast pile device
CN111981980A (en) * 2020-08-18 2020-11-24 重庆医科大学附属口腔医院 Method and system for testing suitability deviation of dental prosthesis CAD and manufacturing process

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CYRIL PEREZ等: "Optimisation of a guided endodontics protocol for removal of", 《AUSTRALIAN ENDODONTIC JOURNAL》 *
FRANZ SEBASTIAN SCHWINDLING等: "Three-dimensional-guided removal and preparation of dental root", 《JOURNAL OF PROSTHODONTIC RESEARCH》 *
LUCAS MOREIRA MAIA等: "Three-dimensional endodontic guide for adhesive fiber post", 《THE JOURNAL OF PROSTHETIC DENTISTRY》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114366349A (en) * 2022-02-18 2022-04-19 四川大学 Manufacturing method of residual root and residual crown pile core shaping and repairing guide plate and guide plate
CN114366349B (en) * 2022-02-18 2022-07-29 四川大学 Manufacturing method of residual root and crown pile core shaping and repairing guide plate and guide plate

Similar Documents

Publication Publication Date Title
CN108618854B (en) Digital design and manufacturing method of guide plate for root tip operation
US8986006B2 (en) Dental obturator
RU146100U1 (en) SURGICAL PATTERN POSITIONING DEVICE
US20210330426A1 (en) Endodontic file
CN107184285A (en) The dentistry implant implantation of design by chair can be positioned, guiding device step by step for hole
CN112690912A (en) Guide plate for pile core dismantling and preparation method thereof
CN106344183A (en) Device for tooth root canal mini-invasive treatment
KR20120136858A (en) Rapid prototype of oral model assembly for fabricating intraoral appliance used for implant operation and method for fabricating intraoral appliance used for implant operation using the same
CN111214299B (en) Manufacturing method of orthodontic micro-screw guide plate and orthodontic micro-screw guide plate
KR102052693B1 (en) Initial Drill with tissue punching function
CN210811651U (en) Cascade type oral implantation operation guide plate system
CN204446153U (en) A kind of safety opens the special dental sewing machine needle of roof of pulp chamber
Ruddle Endodontic access preparation: an opening for success
JP3182420U (en) Dental root canal treatment drill
KR20230055866A (en) Digital guide drill for implant procedures with enhanced performance efficiency
Bordone et al. Treatment of obliterated root canals using various guided endodontic techniques: a case series
CN107661151A (en) A kind of single solution for diverse problems formula digitlization tip of a root surgical operation guide plate and its application
Lumley et al. Root canal retreatment
Wei et al. Expert consensus on digital guided therapy for endodontic diseases
CN204364145U (en) One has core taper zirconium oxide root canal pile to follow closely
CN220967422U (en) Denture clinical tooth-preparation mobile phone profiling bracket
CN213525572U (en) Be applied to oral cavity wicresoft car needle of extracing tooth
CN115531014A (en) Dental crown lengthening operation guide plate and manufacturing method thereof
CN213430686U (en) Dental implant instrument set for forming bone supplementing space by moving nasal sinus cavity mucosa and nasal sinus scraper
Scarlatescu et al. Frequent procedural errors and structural complications in endodontically treated teeth

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210423

RJ01 Rejection of invention patent application after publication