CN114714625B - Method for manufacturing personalized root canal filling material by using 3D printing mode - Google Patents
Method for manufacturing personalized root canal filling material by using 3D printing mode Download PDFInfo
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- CN114714625B CN114714625B CN202210305544.3A CN202210305544A CN114714625B CN 114714625 B CN114714625 B CN 114714625B CN 202210305544 A CN202210305544 A CN 202210305544A CN 114714625 B CN114714625 B CN 114714625B
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- root canal
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- printing
- personalized
- root
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000010146 3D printing Methods 0.000 title claims abstract description 21
- 239000002631 root canal filling material Substances 0.000 title claims abstract description 17
- 210000004262 dental pulp cavity Anatomy 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007408 cone-beam computed tomography Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000000899 Gutta-Percha Substances 0.000 claims description 24
- 240000000342 Palaquium gutta Species 0.000 claims description 24
- 229920000588 gutta-percha Polymers 0.000 claims description 24
- 238000007639 printing Methods 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000012943 hotmelt 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
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000003239 periodontal effect Effects 0.000 abstract description 8
- 230000003685 thermal hair damage Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005429 filling process Methods 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 208000024216 Periapical disease Diseases 0.000 description 1
- 238000012274 Preoperative evaluation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 239000012678 infectious agent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber 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 personalized root canal filling materials by using a 3D printing mode, which comprises the steps of obtaining a CBCT image of a patient tooth, reconstructing a three-dimensional model of a tooth root, 3D printing and manufacturing the filling materials. The personalized filler obtained by the method is highly matched with the prepared three-dimensional shape of the root canal, 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 personalized root canal filling materials by using a 3D printing mode.
Background
Root canal treatment is currently the most internationally used effective treatment for endodontic and periapical diseases. The root canal therapy is based on the principle that most of the infectious agents in the root canal are removed mechanically and chemically, and by filling the root canal, closing the crown, the periapical lesions are prevented from occurring or healing of the periapical lesions that have already occurred is promoted. The present common root canal filling methods in clinic at home comprise a cold gutta percha lateral pressure filling method, a hot gutta percha filling method, a single tip method and the like, and the above root canal filling methods have a plurality of defects, such as: the cold gutta percha side pressure filling method gutta percha cannot flow, and the deformation capability is limited; the gutta-percha points cannot form a whole, and a certain gap exists between the main gutta-percha points and the auxiliary gutta-percha points; the tight filling of the thick root canal is difficult. Bubbles can be generated due to human factors and the like in the operation process of the hot gutta-percha filling method; the high temperature may damage periodontal tissue; the selected main tip has poor adhesion to the thick root canal, especially at the root tip. The single tip method is difficult to match with the highly sealed main tip, the root tip has poor sealing performance, and micro leakage is easy to generate.
Currently, 3D printing techniques have been widely used in the field of dentistry, such as in stomatology for making nasal silicone rubber prostheses; temporary crowns, bridges; all porcelain crowns, bridges, etc. The method is applied to preoperative evaluation of craniomaxillofacial surgery in the field of stomatognathic surgery, and assists in making a surgery plan and simulating surgery; printing a bite splint, bone accessory, connecting arm, osteotomy line indicator, etc. In the field of clinical orthodontics, students verify cases of 3D virtual designs and digitally print bite guides, and all patient facial forms are improved to different degrees. In the field of stomatology, there are reports that digital model materialization is widely applied to the field of oral teaching and the clinical complex root canal treatment process; in vitro tests have also been reported to successfully use 3D printing techniques to print an open-marrow guide to assist in open-marrow treatment.
However, no report has been found about the use of 3D printing technology by a learner to print personalized root canal filling.
Disclosure of Invention
Aiming at the problems, the invention provides a method for manufacturing the personalized root canal filling material by utilizing the 3D printing technology, the personalized filling material obtained by the method is highly matched with the prepared three-dimensional shape of the root canal, so that the occurrence of micro leakage can be reduced, the root canal filling process can be simplified by using the personalized root canal filling material to perform root canal filling, the treatment time can be shortened, the thermal damage to periodontal tissues can be avoided, and the 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 filling materials by using a 3D printing mode comprises the steps of obtaining a CBCT image of a patient tooth, reconstructing a three-dimensional model of the tooth root, 3D printing and manufacturing the filling materials.
Further, CBCT images are acquired using CBCT taken during patient treatment.
Further, reconstructing a tooth root model by using mimics software, and dividing the tooth root model into two parts along a tooth long axis after reconstruction is completed; in the segmentation process, the root canal form is divided into two parts, and the root canal system is uniformly distributed on the two part models.
Further, the obtained two-part model is exported from the software and then printed by using a 3D printing mode, so that a die used for manufacturing the personalized root canal filler is obtained.
Further, the hot melt injection molding gutta-percha and the obtained mould are utilized to manufacture the personalized root canal filling, and the gutta-percha is injected in a state of 200 ℃.
Furthermore, in the printing process, pure titanium is selected for printing, so that a die with high precision, strong stability and no deformation is obtained.
Compared with the prior art, the invention has the advantages that:
the method for manufacturing the personalized root canal filling material is simple and convenient to operate, the material is still gutta-percha in nature, the biological safety is high, the material is easy to be accepted by stomatologists 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 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 generation of micro leakage is reduced, and the damage of the hot gutta-percha filling to periodontal tissues such as periodontal membranes, alveolar bones and the like is reduced.
Detailed Description
The present invention will be described in further detail with reference to examples.
Based on the prior art, the invention aims to provide a method for manufacturing personalized root canal filling materials by using a 3D printing technology, the personalized filling materials obtained by the method are highly matched with the prepared three-dimensional shape of the root canal, so that the occurrence of micro leakage can be reduced, the root canal filling process can be simplified by using the personalized root canal filling materials to perform root canal filling, the treatment time can be shortened, and the thermal damage to periodontal tissues can be avoided, thereby providing a more novel and high-quality root canal filling method for clinical work.
According to the purpose of the invention, the manufacturing steps of the personalized root canal filling material comprise four parts of acquisition of a CBCT image of the affected tooth, reconstruction of a three-dimensional model of the tooth root, 3D printing and manufacturing of the filling material.
CBCT images are taken using CBCT taken conventionally during patient treatment.
And (3) reconstructing the tooth root model by using MImics software, and dividing the tooth root model into two parts along the long axis of the tooth body after the reconstruction is completed.
In the segmentation process, the root canal shape should be divided into two parts, and the root canal system should be distributed on the two models as uniformly as possible.
And respectively exporting the two obtained models into stl format, and then respectively performing 3D printing on the two models, so as to obtain the mould for manufacturing the personalized root canal filler.
The material used in printing is pure titanium, and the die printed by the material has the advantages of high precision, strong stability, difficult deformation and the like.
And (5) manufacturing the personalized root canal filling material by using the obtained mold and the hot-melt injection molding gutta-percha.
The method for manufacturing the personalized root canal filling material is simple and convenient to operate, the material is still gutta-percha in nature, the biological safety is high, the material is easy to be accepted by stomatologists 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 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 generation of micro leakage is reduced, and the damage of the hot gutta-percha filling to periodontal tissues such as periodontal membranes, alveolar bones and the like is reduced.
The main purpose of the invention is to print one root of tooth in two halves (equivalent to dividing the root canal into two parts from the middle), after printing, the two halves of root of tooth are combined together (the main purpose is to combine the two parts of root canal systems together, thereby facilitating the molding of the hot injection molding gutta-percha), then the hot injection molding gutta-percha is injected into the root canal of the mould in sections (200 ℃ with fluidity at the temperature), and each injection section (about 2 mm) is vertically pressurized, so as to ensure the compactness of the manufactured individualized root canal filling, thus the whole root canal is filled with the hot injection molding gutta-percha, and the two halves of root of tooth are taken away respectively after the whole root canal is cooled, thus the individualized gutta-percha consistent with the shape of the root canal can be obtained. The gutta percha obtained by the method has better adhesion with the root canal, especially with the thick teeth of the root canal, than the common standard main gutta percha point.
In conclusion, by adopting the technology provided by the invention, not only is the function of manufacturing the root canal filling realized, but also better fitting degree can be achieved in the specific implementation process, so that the sealing property between the root canal and the gutta-percha is improved, and the root canal filling technology is suitable for thick teeth of the root canal, has strong practicability and wide application range.
Claims (2)
1. A method for manufacturing personalized root canal filling materials by using a 3D printing mode is characterized by comprising the steps of obtaining a CBCT image of a patient tooth, reconstructing a three-dimensional model of the tooth root, 3D printing and manufacturing the filling materials; the CBCT image is acquired by using CBCT shot in the treatment process of the patient; reconstructing a tooth root model by using mimics software, and dividing the tooth root model into two parts along a tooth long axis after reconstruction is completed; in the process of segmentation, the root canal form is divided into two parts, and root canal systems are uniformly distributed on the two part models; the obtained two-part model is exported from software and then printed by a 3D printing mode, so that a die used for manufacturing the personalized root canal filler is obtained; and (3) manufacturing personalized root canal filling materials by utilizing hot melt injection gutta-percha and the obtained mould, wherein the gutta-percha is injected in a state of 200 ℃.
2. The method for manufacturing personalized root canal filler by using 3D printing according to claim 1, wherein pure titanium is selected for printing in 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 |
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| Publication Number | Publication Date |
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| CN114714625A CN114714625A (en) | 2022-07-08 |
| CN114714625B true 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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| 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 |
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| 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 |
| WO2021194055A1 (en) * | 2020-03-25 | 2021-09-30 | 가톨릭대학교 산학협력단 | Method for manufacturing tooth including root canal for assessment of root canal filling process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013103209A1 (en) * | 2013-03-28 | 2014-10-02 | Sicat Gmbh & Co. Kg | Method for planning a root canal treatment of a patient |
| US12127902B2 (en) * | 2017-09-08 | 2024-10-29 | Martin David LEVIN | Scaffolds, systems, methods, and computer program products for regenerating a pulp |
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2022
- 2022-03-25 CN CN202210305544.3A patent/CN114714625B/en active Active
Patent Citations (9)
| 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 |
| 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 |
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| CN111107804A (en) * | 2017-09-19 | 2020-05-05 | 3M创新有限公司 | Tooth repairing mould |
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| WO2021194055A1 (en) * | 2020-03-25 | 2021-09-30 | 가톨릭대학교 산학협력단 | Method for manufacturing tooth including root canal for assessment of root canal filling process |
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| Publication number | Publication date |
|---|---|
| CN114714625A (en) | 2022-07-08 |
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