CN114714625A - Method for manufacturing personalized root canal filler by using 3D printing mode - Google Patents
Method for manufacturing personalized root canal filler by using 3D printing mode Download PDFInfo
- Publication number
- CN114714625A CN114714625A CN202210305544.3A CN202210305544A CN114714625A CN 114714625 A CN114714625 A CN 114714625A CN 202210305544 A CN202210305544 A CN 202210305544A CN 114714625 A CN114714625 A CN 114714625A
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- Prior art keywords
- root canal
- manufacturing
- printing
- personalized
- root
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- 210000004262 dental pulp cavity Anatomy 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000010146 3D printing Methods 0.000 title claims abstract description 26
- 239000000945 filler Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000007408 cone-beam computed tomography Methods 0.000 claims abstract description 10
- 239000000899 Gutta-Percha Substances 0.000 claims description 27
- 240000000342 Palaquium gutta Species 0.000 claims description 27
- 229920000588 gutta-percha Polymers 0.000 claims description 27
- 239000002631 root canal filling material Substances 0.000 claims description 12
- 238000007639 printing Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 230000003239 periodontal effect Effects 0.000 abstract description 6
- 230000003685 thermal hair damage Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 210000001519 tissue Anatomy 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 210000002379 periodontal ligament Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000012404 In vitro experiment Methods 0.000 description 1
- 208000024216 Periapical disease Diseases 0.000 description 1
- 238000012274 Preoperative evaluation Methods 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a method for manufacturing an individualized root canal filler by using a 3D printing mode, which comprises the steps of obtaining a CBCT image of an affected tooth, reconstructing a three-dimensional model of a tooth root, 3D printing and manufacturing the filler. The personalized filler obtained by the method is highly matched with the prepared root canal in three-dimensional form, so that the occurrence of micro-leakage can be reduced, the root canal filling by using the personalized filler can also simplify the operation process, shorten the treatment time and avoid the thermal damage to periodontal tissues, thereby being widely applied to the technical field of root canal treatment.
Description
Technical Field
The invention relates to the technical field of root canal treatment, in particular to a method for manufacturing a personalized root canal filler by using a 3D printing mode.
Background
Root canal therapy is currently the most effective treatment for endodontic and periapical disease internationally. The principle of endodontics is to remove most of the infectious material in the root canal by mechanical and chemical means and to prevent the occurrence of periapical lesions or promote the healing of already occurring periapical lesions by filling the root canal, closing the crown. At present, the common root canal filling methods in domestic clinic comprise a cold gutta-percha lateral pressure filling method, a hot gutta-percha filling method, a single-tip method and the like, and the root canal filling methods have many defects, such as: the cold gutta-percha lateral pressure filling method gutta-percha cannot flow, and the deformation capability of the cold gutta-percha is limited; the gutta-percha points cannot form a whole, and a certain gap exists between the main gutta-percha point and the auxiliary gutta-percha point; tight filling of large root canals is difficult. Bubbles are generated by human factors and the like in the operation process of the hot gutta-percha filling method; high temperatures may cause damage to the periodontal tissues; the selected main tip has poor adhesion to large root canals, especially at the apical part. The single-tip method is difficult to match a highly close main tip, and is liable to cause micro-leakage due to poor root tip sealing property.
At present, the 3D printing technology is widely applied to the field of oral medicine, such as manufacturing nasal silicone rubber prosthesis in the mouth prosthetics; temporary crowns, bridges; all-ceramic crowns, bridges, etc. The method is applied to preoperative evaluation of craniomaxillofacial surgery in the field of oral and maxillofacial surgery, and assists in making an operation plan and simulating an operation; printing occlusal splint, bone attachment, connecting arm and osteotomy line indicators, etc. In the field of clinical orthodontics, students verify a case of 3D virtual design and digital printing of an occlusion guide plate, and the face shapes of all patients are improved to different degrees. In the field of oral medicine, there are reports that the digital model materialization is widely applied to the oral teaching field and the clinical complex root canal treatment process; in vitro experiments for printing a medullary opening guide plate assisted medullary opening treatment successfully using a 3D printing technique have also been reported.
However, no report on how to print personalized root canal fillers by using 3D printing technology has been found by the scholars.
Disclosure of Invention
Aiming at the problems, the invention provides a method for manufacturing the personalized root canal filler by using a 3D printing technology, the personalized filler obtained by the method is highly matched with the prepared root canal in three-dimensional form, the occurrence of micro leakage can be reduced, the operation process can be simplified by using the personalized filler to fill the root canal, the treatment time is shortened, the thermal damage to periodontal tissues is avoided, and a more novel and high-quality root canal filling method is provided for clinical work.
The technical scheme provided by the invention is as follows:
a method for manufacturing personalized root canal fillers by using a 3D printing mode comprises the steps of obtaining CBCT images of an affected tooth, reconstructing a three-dimensional model of a tooth root, 3D printing and manufacturing fillers.
Further, the acquisition of the CBCT image uses CBCT taken during the treatment of the patient.
Further, reconstructing a tooth root model by using mimics software, and dividing the tooth root model into two parts along the long axis of a tooth body after reconstruction is completed; in the segmentation process, the root canal morphology is divided into two parts, and the root canal system is uniformly distributed on the two-part model.
Further, the obtained two-part model is exported from software, and then is printed in a 3D printing mode, so that the die used for manufacturing the personalized root canal filler is obtained.
Further, the personalized root canal filler is manufactured by utilizing hot-melt injection gutta-percha and the obtained mould, wherein the gutta-percha is injected at the state of 200 ℃.
Further, in the printing process, pure titanium is selected for printing, so that the die which is high in precision, strong in stability and free of deformation is obtained.
Compared with the prior art, the invention has the advantages that:
the method for manufacturing the personalized root canal filler is simple and convenient to operate, the material is still gutta-percha in nature, the biological safety is high, the gutta-percha is easily accepted by oral doctors and patients, the time consumed in the root canal filling treatment process can be greatly reduced by the root canal filling material manufactured through the 3D printing die, the root canal filling material is more attached to the root canal shape after the root canal is prepared, the sealing degree of the filling material and the root canal wall is improved, the micro-leakage is reduced, and the damage of the hot gutta-percha filling to periodontal tissues such as periodontal ligament, alveolar bone and the like is reduced.
Detailed Description
The present invention will be described in further detail with reference to examples.
Based on the problems of the prior art, the invention aims to provide a method for manufacturing a personalized root canal filler by using a 3D printing technology, the personalized filler obtained by the method is highly matched with the prepared root canal in three-dimensional form, the occurrence of micro-leakage can be reduced, the operation process can be simplified by using the personalized filler to fill the root canal, the treatment time is shortened, the thermal injury to periodontal tissues is avoided, and therefore, a more novel and high-quality root canal filling method is provided for clinical work.
According to the aim of the invention, the manufacturing steps of the personalized root canal filler comprise four parts of obtaining CBCT images of the affected teeth, reconstructing a three-dimensional model of the tooth root, 3D printing and manufacturing the filler.
CBCT images may be obtained using CBCT taken routinely during patient treatment.
The reconstruction of the tooth root model utilizes mimics software, and after the reconstruction is completed, the tooth root model is divided into two parts along the long axis of the tooth body.
The root canal morphology should also be divided into two during the segmentation process, and the root canal system should be distributed on the two-part model as uniformly as possible.
And respectively exporting the two obtained models into stl format, and then respectively carrying out 3D printing on the models so as to obtain a die for manufacturing the personalized root canal filler.
The material when printing chooses pure titanium for use, because of its mould that prints has advantages such as precision height, stability are strong, non-deformable.
And manufacturing the personalized root canal filler by using the obtained mould and the hot-melt injection gutta-percha.
The method for manufacturing the personalized root canal filler is simple and convenient to operate, the material is still gutta-percha in nature, the biological safety is high, the gutta-percha is easily accepted by oral doctors and patients, the time consumed in the root canal filling treatment process can be greatly reduced by the root canal filling material manufactured through the 3D printing die, the root canal filling material is more attached to the root canal shape after the root canal is prepared, the sealing degree of the filling material and the root canal wall is improved, the micro-leakage is reduced, and the damage of the hot gutta-percha filling to periodontal tissues such as periodontal ligament, alveolar bone and the like is reduced.
The invention mainly aims to print a root in two halves (namely, the root canal is divided into two halves from the middle) by using a 3D printing technology, after the printing is finished, the two halves of the root are combined together (the main purpose is to combine the two root canal systems together so as to be beneficial to the forming of the hot injection molding gutta-percha), then the hot injection molding gutta-percha is injected into the root canal of a mould in sections (200 ℃, the fluidity is achieved at the temperature), each section (about 2mm) is injected, the vertical pressurization is carried out so as to ensure the compactness of the manufactured personalized root canal filling, so that the whole root canal is fully injected with the hot injection molding gutta-percha, and the two halves of the root are respectively taken away after the root canal is cooled, and thus the personalized gutta-percha consistent with the root canal shape can be obtained. The gutta-percha obtained by this method has better adhesion to the root canal than the common standard main gutta-percha point, especially to the tooth with thick root canal.
In conclusion, by adopting the technology provided by the invention, the function of manufacturing the root canal filling material is realized, and better attaching degree can be achieved in the specific implementation process, so that the sealing property between the root canal and the gutta-percha is improved, the tooth-filling material is suitable for the teeth with thick root canals, the practicability is strong, and the application range is wide.
Claims (6)
1. A method for manufacturing an individualized root canal filler by using a 3D printing mode is characterized by comprising the steps of obtaining a CBCT image of an affected tooth, reconstructing a three-dimensional model of a tooth root, 3D printing and manufacturing the filler.
2. The method for manufacturing the personalized root canal filling material using the 3D printing method according to claim 1, wherein the CBCT image is obtained using CBCT taken during the treatment of the patient.
3. The method for manufacturing the personalized root canal filling material by the 3D printing method according to claim 2, wherein the root model is reconstructed by using mimics software, and the root model is divided into two parts along the long axis of the tooth body after the reconstruction is completed; in the segmentation process, the root canal morphology is divided into two parts, and the root canal system is uniformly distributed on the two-part model.
4. The method for manufacturing the personalized root canal filling material by using the 3D printing method according to claim 3, wherein the obtained two-part model is derived from software, and then is printed by using the 3D printing method, so as to obtain the mold for manufacturing the personalized root canal filling material.
5. The method for manufacturing the personalized root canal filling material by using the 3D printing manner as claimed in claim 4, wherein the personalized root canal filling material is manufactured by using hot-melt injection gutta-percha and the obtained mold, and the gutta-percha is injected in a state of 200 ℃.
6. The method for manufacturing the personalized root canal filling material by the 3D printing method according to claim 4, wherein pure titanium is selected for printing during the printing process, so that a mold with high precision, strong stability and no deformation is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210305544.3A CN114714625B (en) | 2022-03-25 | 2022-03-25 | Method for manufacturing personalized root canal filling material by using 3D printing mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210305544.3A CN114714625B (en) | 2022-03-25 | 2022-03-25 | Method for manufacturing personalized root canal filling material by using 3D printing mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114714625A true CN114714625A (en) | 2022-07-08 |
| CN114714625B CN114714625B (en) | 2023-11-21 |
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| CN202210305544.3A Active CN114714625B (en) | 2022-03-25 | 2022-03-25 | Method for manufacturing personalized root canal filling material by using 3D printing mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015208361A (en) * | 2014-04-24 | 2015-11-24 | 日出 宮本 | Oral cavity model and manufacturing method of the same |
| US20160030136A1 (en) * | 2013-03-28 | 2016-02-04 | Sicat Gmbh & Co. Kg | Method for planning a root treatment of a patient |
| CN106344183A (en) * | 2016-08-30 | 2017-01-25 | 苏州速迈医疗设备有限公司 | Device for tooth root canal mini-invasive treatment |
| CN106377434A (en) * | 2016-11-18 | 2017-02-08 | 莫总鸣 | Manufacturing method of root canal filling tip |
| CN109561948A (en) * | 2016-06-30 | 2019-04-02 | 莫吉托公司 | Method of the mold made of increasing material manufacturing by moulding the artificial tooth that manufacture can pluck |
| CN110384566A (en) * | 2018-04-16 | 2019-10-29 | 上海交通大学医学院附属第九人民医院 | A kind of 3D printing tooth model |
| CN111107804A (en) * | 2017-09-19 | 2020-05-05 | 3M创新有限公司 | Tooth repairing mould |
| CN111920537A (en) * | 2020-07-10 | 2020-11-13 | 上海交通大学医学院附属第九人民医院 | Digital generation preparation method based on three-dimensional printing technology |
| CN212229909U (en) * | 2020-06-29 | 2020-12-25 | 上海交通大学医学院附属第九人民医院 | 3D prints tooth model with collateral branch root canal |
| US20210059787A1 (en) * | 2017-09-08 | 2021-03-04 | Martin David LEVIN | Scaffolds, systems, methods, and computer program products for regenerating a pulp |
| WO2021194055A1 (en) * | 2020-03-25 | 2021-09-30 | 가톨릭대학교 산학협력단 | Method for manufacturing tooth including root canal for assessment of root canal filling process |
-
2022
- 2022-03-25 CN CN202210305544.3A patent/CN114714625B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160030136A1 (en) * | 2013-03-28 | 2016-02-04 | Sicat Gmbh & Co. Kg | Method for planning a root treatment of a patient |
| JP2015208361A (en) * | 2014-04-24 | 2015-11-24 | 日出 宮本 | Oral cavity model and manufacturing method of the same |
| CN109561948A (en) * | 2016-06-30 | 2019-04-02 | 莫吉托公司 | Method of the mold made of increasing material manufacturing by moulding the artificial tooth that manufacture can pluck |
| CN106344183A (en) * | 2016-08-30 | 2017-01-25 | 苏州速迈医疗设备有限公司 | Device for tooth root canal mini-invasive treatment |
| CN106377434A (en) * | 2016-11-18 | 2017-02-08 | 莫总鸣 | Manufacturing method of root canal filling tip |
| US20210059787A1 (en) * | 2017-09-08 | 2021-03-04 | Martin David LEVIN | Scaffolds, systems, methods, and computer program products for regenerating a pulp |
| CN111107804A (en) * | 2017-09-19 | 2020-05-05 | 3M创新有限公司 | Tooth repairing mould |
| CN110384566A (en) * | 2018-04-16 | 2019-10-29 | 上海交通大学医学院附属第九人民医院 | A kind of 3D printing tooth model |
| WO2021194055A1 (en) * | 2020-03-25 | 2021-09-30 | 가톨릭대학교 산학협력단 | Method for manufacturing tooth including root canal for assessment of root canal filling process |
| CN212229909U (en) * | 2020-06-29 | 2020-12-25 | 上海交通大学医学院附属第九人民医院 | 3D prints tooth model with collateral branch root canal |
| CN111920537A (en) * | 2020-07-10 | 2020-11-13 | 上海交通大学医学院附属第九人民医院 | Digital generation preparation method based on three-dimensional printing technology |
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| Publication number | Publication date |
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| CN114714625B (en) | 2023-11-21 |
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