WO2016004818A1 - Ensemble de personnalisation d'une station de base et son procédé de fabrication - Google Patents

Ensemble de personnalisation d'une station de base et son procédé de fabrication Download PDF

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Publication number
WO2016004818A1
WO2016004818A1 PCT/CN2015/082043 CN2015082043W WO2016004818A1 WO 2016004818 A1 WO2016004818 A1 WO 2016004818A1 CN 2015082043 W CN2015082043 W CN 2015082043W WO 2016004818 A1 WO2016004818 A1 WO 2016004818A1
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Prior art keywords
abutment
implant
connecting section
printing
angle
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PCT/CN2015/082043
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English (en)
Chinese (zh)
Inventor
林锦新
卢衍锦
甘艺良
黄永才
吴松全
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福建中科康钛材料科技有限公司
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Publication of WO2016004818A1 publication Critical patent/WO2016004818A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools

Definitions

  • the invention relates to the field of biomedical engineering technology, in particular to a personalized abutment assembly and a preparation method thereof.
  • the implant is a structure implanted in the bone tissue, which acts as a natural root to support the retention and other functions.
  • the abutment is the part above the implant that penetrates the gums and is exposed to the oral cavity. It is the key structure connecting the upper denture and the lower implant.
  • the shape of the abutment and the connection of the planting abutment to the implant denture Stability, fixation and aesthetics play an important role.
  • the neck design of the implant abutment directly affects the rim shape of the implant-supported full crown restoration and The health of the surrounding soft tissue; the standard abutment has a single shape, which cannot fundamentally meet the needs of individualized repair of patients. If you can design a personalized abutment with aesthetic anatomy similar to the patient's natural teeth, you can promote the formation of the gums, combining the two steps of piercing and gum shaping, thus reducing the cost of treatment and the cost of temporary crowns. And can improve the shape of the rim after planting and repairing. Therefore, it is necessary to develop a personalized abutment system suitable for individual needs.
  • oral implant restoration has achieved a long-term success rate of more than 90% after decades of development.
  • the operation procedure is complicated and the initial stability is not good. It is difficult to place the implant and the abutment during the repair process.
  • the micro-motion of the abutment relative to the implant causes a gap to be generated, thereby causing leakage. Problems such as looseness of the abutment and screws, which may lead to implant restoration Not ideal or repair failed.
  • the success of implant denture restoration depends to a large extent on the shape, height, taper, material, proper number, reasonable distribution of the abutment and the acquisition of the common position.
  • the abutment can be divided into various types according to the connection mode, function, material, etc., and can be divided into a finished (or pre-formed) abutment and a customized abutment according to the production method.
  • the internal connection is usually adopted. This method is the trend and direction of the development of the planting system because it exhibits better performance in terms of anti-rotation, conduction and dispersion stress.
  • abutment loosening is still the most common phenomenon in the clinic. Therefore, it is necessary to improve the current abutment and increase the stability of the abutment in the cavity.
  • the personalized planting abutments can be divided into the following categories according to the processing technology: 1 special modified and modified base, the large abutment will be manually adjusted according to the needs of the required shape, the general operation is difficult, take more time, In particular, the modified zirconia abutment may cause microcracks on the surface, causing damage to the abutment. 2UCLA abutment, the upper wax cylinder or plastic is modified and then waxed into the required shape and then cast together with the lower metal substrate. The method has many processing steps and needs to be cast with precious metal, and the processing cost is high.
  • the abutment angle ⁇ and the abutment shape of the abutment body of the present invention are personalized abutments that are adapted to the angle and shape of the patient's teeth and implants according to the angle and shape of the patient's teeth and implants. Therefore, it fully satisfies the individualized needs of different patients, which not only helps to improve the aesthetic effect of the teeth, but also conforms to the physiological functions of the teeth. Moreover, the hospital does not need to reserve a large number of products for clinical selection, thereby maximizing the medical cost.
  • the present invention is implemented as follows:
  • a personalized abutment assembly characterized in that it comprises a base body, a fixing bolt and a lock washer connected between the implant and the base body, the base body comprising a crown connecting section and a piercing a segment and an implant connecting section, wherein the base body is provided with a stepped hole extending through the crown connecting section, the piercing section and the implant connecting section, wherein the stepped hole is located at one end of the implant connecting section to match the fixing bolt
  • the threaded hole, the other end is a light hole having a diameter slightly larger than the outer diameter of the bolt head of the fixing bolt; the abutment angle ⁇ of the abutment body and the abutment shape are made according to the angle and shape of the patient's teeth and the implant.
  • a personalized abutment adapted to the angle and shape of the patient's teeth and implants, the abutment angle ⁇ being located at the crown connecting section The angle between the midline and the midline of the implant connection segment.
  • the base body, the fixing bolt and the lock washer are made of titanium or titanium alloy powder and are manufactured by 3D printing technology.
  • the fixing bolt has a pitch ranging from 0.1 to 0.3 mm; the locking washer has a thickness of 0.1-0.5 mm, and the outer diameter is less than or equal to an outer diameter of the bolt head of the fixing bolt.
  • the abutment body may be an inner connecting base that is connected to the upper end of the implant, and the outer peripheral wall of the implant connecting section of the inner connecting base is correspondingly coupled with the inner hole of the upper end of the implant, and the inner connecting base is planted.
  • the length of the body connecting section is 2-4 mm; the lower section of the piercing section of the inner connecting abutment is provided with a frustum, and the angle of the frustum is 1-4°.
  • the abutment body may also be an outer connecting base that is connected to the upper end of the implant.
  • the implant connecting section of the outer connecting base is provided with an interface at the lower end of the threaded hole and correspondingly connected with the outer wall of the upper end of the implant.
  • the materials of the abutment body, the fixing bolts and the lock washer are made of titanium or titanium alloy powder.
  • a preparation method for preparing a personalized abutment assembly characterized in that the method comprises sequential 3D scanning, CAD modeling, 3D printing and heat treatment;
  • the 3D scanning is to obtain the angle and shape information of the crown connecting section, the piercing section and the implant connecting section of the abutment body by scanning the plaster model of the patient's teeth with a 3D scanner or directly scanning the teeth in the patient's mouth;
  • the CAD modeling is based on the data obtained by the three-dimensional software scanning, and then combined with the tooth position and shape of the patient's teeth to design a personalized abutment that meets the requirements, and then the designed personalized abutment is three-dimensionally sliced, each layer
  • the thickness is in the range of 10-50 ⁇ m, and the processed data is stored in the CL file format;
  • the 3D printing comprises the following steps: 1 input CL file; 2 titanium-based powder laying; 3 laser scanning printing; 4 lifting powder cylinder rising, molding cylinder falling; 5 repeating steps 2-4 until printing is completed;
  • the printing material used for the 3D printing is titanium or titanium alloy powder, and the powder particle size is between 5-40 ⁇ m;
  • the heat treatment is an annealing treatment under a vacuum or an argon atmosphere.
  • the process parameters of the 3D printing are: the thickness of each layer is 20-45 ⁇ m; the laser power is 10-200 W, the spot of the laser is controlled at 10-100 ⁇ m; the speed of the line scanning is controlled at 3-7 m/s.
  • the annealing treatment temperature is 510-690 ° C
  • the holding time is 1-5 hours
  • the degree of vacuum at the time of annealing under vacuum is 1.5 ⁇ 10 -3 - 1.5 ⁇ 10 -6 Pa.
  • the present invention has the following advantages:
  • the abutment body of the present invention is made according to the tooth position, shape and implant type of the patient's human body, so that the doctor is more targeted when designing the abutment, since the abutment angle ⁇ and the abutment form are According to the angle and shape of the patient's teeth and implants, it is compatible with the angle and shape of the patient's teeth and implants, so it can fully meet the individual needs of different patients, especially the poor local conditions and restorations in the planting area.
  • the aesthetically demanding anterior teeth area not only helps to improve the aesthetic effect of the teeth, but also conforms to the physiological functions of the teeth; in addition, the hospital does not need to reserve a large number of products for clinical selection, which greatly saves medical costs;
  • the angle and shape of the base body can be arbitrary. According to the angle and shape of the patient's teeth and implants, it can be fully adapted to the human oral environment.
  • the threaded holes inside the base body can be directly printed out accurately by 3D printing technology, which not only avoids post processing. Possible damage to the base body, and even if the base angle ⁇ is greater than 0, it can be easily and conveniently printed by 3D printing technology, which is impossible in the prior art;
  • the invention adds internal threads in the connecting section of the implant, and adds a anti-loose gasket between the fixing bolt and the base body for shock absorption and shock absorption, the stability of the connection between the abutment body and the implant body is greatly improved. Sexuality, increasing the success rate of planting;
  • the invention adopts the 3D printing one-time forming technology, and the manufacturing precision is higher than the existing production technology, such as cutting technology, and can easily process various complex shapes and personalized abutments, which not only improves the aesthetic effect of the front teeth, but also conforms to The physiological function of the posterior teeth;
  • the invention adopts 3D printing technology to prepare a personalized base station, which is a green additive manufacturing technology, and has lower cost and higher efficiency than conventional casting, cutting and other subtraction techniques;
  • the personalized base provided by the invention has the advantages of reasonable structure, convenient operation, scientific and easy promotion.
  • Figure 1 is an exploded view of the connecting base in the personalized base assembly of the present invention (a base body 1/4 section);
  • Figure 2 is a two-dimensional front view of Figure 1;
  • FIG. 3 is a schematic view showing the three-dimensional structure of the base body of the structural example 1 of the present invention.
  • FIG. 4 is a schematic view showing the three-dimensional structure of the base body of the structural example 2 of the present invention.
  • Figure 5 is a schematic view showing the three-dimensional structure of the base body of the structural example 3 of the present invention.
  • FIG. 6 is a schematic view showing the three-dimensional structure of the base body of the structural example 4 of the present invention.
  • Figure 7 is an exploded view of the outer base of the personalized base assembly of the present invention (a 1/4 section of the base body).
  • Embodiment 1 A personalized abutment assembly, characterized in that, as shown in FIG. 1, it comprises a base body 1, a fixing bolt 2 connected between the implant and the base body 1, and an anti-proof a loose gasket 3, the abutment body 1 includes a crown connecting section 1-1, a piercing section 1-2 and an implant connecting section 1-3, and the base body is provided with a through-crown connecting section 1- 1.
  • a stepped hole through the squat section 1-2 and the implant connecting section 1-3, the stepped hole being located at one end of the implant connecting section 1-3 is a threaded hole 1-5 matching the fixing bolt 2, and the other end
  • the aperture 1-4 having a diameter slightly larger than the outer diameter of the bolt head 2-1 of the fixing bolt 2; the abutment angle ⁇ of the abutment body 1 and the abutment shape are according to the angle and shape of the patient's teeth and the implant
  • a personalized abutment that is adapted to the angle and shape of the patient's teeth and implants, the abutment angle a being the midline of the crown connecting segment 1-1 and the midline of the implant connecting segment 1-3 The angle between them is shown in Figure 2.
  • the interface form of the implant connecting section 1-3 can be determined according to different planting systems at home and abroad, such as: Swedish Nobel, Swiss ITI, German Friadent, Korean OSSTEM, American 3I, German Bego, American Zmmer and other planting systems.
  • the base body 1, the fixing bolt 2 and the lock washer 3 are made of titanium or titanium alloy powder by a 3D printing technique.
  • the fixing bolt 2 has a pitch ranging from 0.1 to 0.3 mm; the locking washer 3 has a thickness of 0.1-0.5 mm, and the outer diameter is less than or equal to the outer diameter of the bolt head 2-1 of the fixing bolt;
  • the sheet can be closed or open.
  • the abutment body 1 may be an inner connecting abutment that is connected to the upper end of the implant, and the implant of the inner connecting abutment
  • the outer peripheral wall of the connecting section 1-3 is correspondingly coupled with the inner hole of the upper end of the implant, and the length of the implant connecting section 1-3 of the inner connecting base is 2-4 mm; the lower section of the inner connecting base is 1-2 It has a frustum with a frustum angle of 1-4 degrees.
  • FIG. 7 is a schematic view of the outer connecting base of the present invention.
  • the abutting body 1 can also be an outer connecting base that is externally connected with the upper end of the implant, and the implant connecting section 1 of the outer connecting base
  • the -3 body is provided with an interface 1-6 located at the lower end of the threaded hole 1-5 and correspondingly connected to the outer wall of the upper end of the implant.
  • the materials of the abutment body 1, the fixing bolt 2 and the lock washer 3 are made of titanium or titanium alloy powder, such as commercially available pure titanium and Ti6Al4V, and also include the following titanium alloys:
  • Ti-Ta-based binary or multi-element alloy Ti-Ta-Zr, Ti-Ta-Zr-Fe, and the like.
  • Embodiment 2 A method for preparing a personalized abutment assembly, characterized in that the method comprises sequential 3D scanning, CAD modeling, 3D printing and heat treatment;
  • the 3D scanning is to obtain a gypsum model of a patient's teeth by using a 3D scanner or directly scan the teeth of the patient's mouth to obtain a crown connecting section 1-1, a piercing section 1-2, and an implant connecting section of the abutment body 1.
  • the CAD modeling is based on the data obtained by the three-dimensional software scanning, and then combined with the tooth position and shape of the patient's teeth to design a personalized abutment that meets the requirements, and then the designed personalized abutment is three-dimensionally sliced, each layer
  • the thickness is in the range of 10-50 ⁇ m, and the processed data is stored in the CL file format;
  • the 3D printing comprises the following steps: 1 input CL file; 2 titanium-based powder laying; 3 laser scanning printing; 4 lifting powder cylinder rising, molding cylinder falling; 5 repeating steps 2-4 until printing is completed;
  • the printing material used for the 3D printing is titanium or titanium alloy powder, and the powder particle size is between 5-40 ⁇ m;
  • the heat treatment is an annealing treatment under a vacuum or an argon atmosphere.
  • the process parameters of the 3D printing are: the thickness of each layer is 20-45 ⁇ m; the laser power is 10-200 W, the spot of the laser is controlled at 10-100 ⁇ m; the speed of the line scanning is controlled at 3-7 m/s.
  • the annealing treatment temperature is 510-690 ° C
  • the holding time is 1-5 hours
  • the degree of vacuum at the time of annealing under vacuum is 1.5 ⁇ 10 -3 - 1.5 ⁇ 10 -6 Pa.
  • the specific preparation method refers to the following preparation examples:
  • the 3D laser scanner is used to scan the plaster model in three dimensions.
  • the shape of the abutment body, the shoulder, the denture connecting part, the piercing part and the abutment angle are obtained from the plaster model.
  • the abutment connection interface is hexagonal, abutment The angle ⁇ is 3°, and the angle of the frustum of the lower part of the abutment section is 4°.
  • Solidworks 3D software according to the data obtained by scanning, combined with the tooth position and shape of the patient's human body, the personalized abutment that meets the requirements is designed. .
  • the length of the implant connection section is 2mm, the inner side is provided with a thread with a pitch of 0.2mm; the thickness of the anti-loose gasket is 0.2mm; the fixing bolt is a full-threaded bolt with a pitch of 0.2mm; then the designed abutment is three-dimensionally sliced, The slice thickness is 25 ⁇ m and saved as a CL file; then the CL file is imported into a 3D printing device for printing; the material used for 3D printing is pure titanium powder, and the average particle size of the powder is 30 ⁇ m; 3D printing includes the following steps: powder laying ⁇ laser Scanning printing ⁇ Powdering cylinder rise, molding cylinder down ⁇ re-powdering ⁇ re-laser printing; 3D printing process parameters are as follows: each layer has a powder thickness of 25 ⁇ m; laser power is 100w; laser spot is 35 ⁇ m, line scanning speed is 5m/s; The printed abutment was annealed under an argon atmosphere, the annealing temperature was 600
  • the 3D laser scanner is used to scan the plaster model in three dimensions.
  • the shape of the abutment body, the shoulder, the denture connecting part, the piercing part and the abutment are obtained from the plaster model.
  • Angle and other information as shown in Figure 4, the abutment connection interface is hexagonal, the abutment angle ⁇ is 28°, and the angle of the frustum of the lower section of the abutment is 2°; then using Solidworks 3D software, according to the scan
  • the data combined with the patient's teeth position and shape, designed a personalized abutment that meets the requirements.
  • the length of the implant connection section is 3mm, the inner side is provided with a thread with a pitch of 0.1mm; the thickness of the anti-loose gasket is 0.3mm; the fixing bolt is a full-threaded bolt with a pitch of 0.1mm; then the designed abutment is three-dimensionally sliced, The slice thickness is 10 ⁇ m and saved as a CL file; then the CL file is imported into a 3D printing device for printing; the material used for 3D printing is Ti6Al4V powder, and the average particle size of the powder is 40 ⁇ m; 3D printing includes the following steps: powder laying ⁇ laser scanning Printing ⁇ powdering cylinder rise, molding cylinder down ⁇ re-paving ⁇ laser printing; 3D printing process parameters are as follows: each layer is 30 ⁇ m thick; laser power is 200w; laser spot is 10 ⁇ m, line scanning speed is 3m/s; The good abutment was annealed at a vacuum of 1.5 ⁇ 10 -3 Pa, and the annealing temperature was
  • the 3D laser scanner is used to scan the gypsum model three-dimensionally.
  • the shape of the abutment body, the shoulder, the denture connecting part, the piercing part and the base are obtained from the plaster model.
  • Information such as the angle of the table; as shown in Figure 5, the interface of the abutment connection is a chamfered hexagon, the abutment angle ⁇ is 4°, and the angle of the frustum of the lower section of the abutment is 1°; then Solidworks 3D software is used.
  • Solidworks 3D software is used according to the data obtained by scanning, combined with the tooth position and shape of the patient's human teeth.
  • the length of the implant connection section is 4mm, the inner side is provided with a thread with a pitch of 0.3mm; the thickness of the anti-loose gasket is 0.1mm; the fixing bolt is a full-threaded bolt with a pitch of 0.3mm; then the designed abutment is three-dimensionally sliced, The slice thickness was 40 ⁇ m and saved as a CL file; then the CL file was imported into a 3D printing device for printing; the material used for 3D printing was Ti6Al4V powder, and the average particle size of the powder was 10 ⁇ m; 3D printing included the following steps: powder laying ⁇ laser scanning Printing ⁇ powdering cylinder rise, molding cylinder down ⁇ re-paving ⁇ laser printing; 3D printing process parameters are as follows: each layer of powder thickness 20 ⁇ m; laser power 50w; laser spot 80 ⁇ m, scanning rate 6m / s; The abutment was annealed at a vacuum of 1.5 ⁇ 10 -6 Pa, and the annealing temperature was 510
  • the individualized abutment is prepared.
  • the 3D laser scanner is used to scan the plaster model in three dimensions.
  • the shape of the abutment body, the shoulder, the denture connecting part, the piercing part and the abutment angle are obtained from the plaster model.
  • other information as shown in Figure 6, the interface of the abutment connection is a three-diamond shape, the abutment angle ⁇ is 2°, and the angle of the frustum of the lower section of the abutment is 3°; then the Solidworks 3D software is used, according to the scan.
  • the data combined with the patient's tooth position and shape, designed a personalized abutment that meets the requirements.
  • the length of the implant connection section is 3mm, the inner side is provided with a thread with a pitch of 0.2mm; the thickness of the anti-loose gasket is 0.5mm; the fixing bolt is a full-threaded bolt with a pitch of 0.2mm; then the designed abutment is three-dimensionally sliced, The slice thickness is 50 ⁇ m and saved as a CL file; then the CL file is imported into a 3D printing device for printing; the material used for 3D printing is pure titanium powder, and the average particle size of the powder is 5 ⁇ m; 3D printing includes the following steps: powder laying ⁇ laser Scanning printing ⁇ Powdering cylinder rise, molding cylinder down ⁇ re-paving ⁇ re-laser printing; 3D printing process parameters are as follows: each layer has a powder thickness of 45 ⁇ m; laser power is 10w; laser spot is 100 ⁇ m, scanning rate is 7m/s; then it will print The good abutment was annealed at a vacuum of 1.5 ⁇ 10 -4 Pa, and the

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & 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)
  • Prostheses (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un ensemble de personnalisation d'une station de base comprenant un corps de station de base (1), un boulon de fixation (2) reliant le corps de station de base (1) et un implant, ainsi qu'un espaceur (3) de serrage. Le corps de station de base (1), présentant un alésage étagé, comporte un segment de liaison de couronne (1-1), un segment gencive (1-2) et un segment de liaison d'implant (1-3). L'angle α de la station de base du corps de station de base (1) et la forme de la station de base dépendent de la forme et de l'angle de l'implant et des dents du patient ; ils épousent la station de base personnalisée. L'angle α de la station de base est formé entre la ligne centrale du segment de liaison de couronne (1-1) et la ligne centrale du segment de liaison d'implant (1-3). L'invention concerne en outre un procédé de fabrication dudit ensemble de personnalisation de station de base, lequel ensemble est formé par balayage 3D, par modélisation CAO, par impression 3D et par traitement thermique. L'invention satisfait aux besoins de personnalisation des patients, améliore l'esthétique des dents, se conforme à la fonction physiologique des dents et réduit les coûts liés au traitement.
PCT/CN2015/082043 2014-07-11 2015-06-23 Ensemble de personnalisation d'une station de base et son procédé de fabrication WO2016004818A1 (fr)

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CN201410331503.7A CN104083226A (zh) 2014-07-11 2014-07-11 个性化基台组件及其制备方法
CN201410331503.7 2014-07-11

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CN104970893B (zh) * 2015-07-01 2018-04-27 福建中科康钛材料科技有限公司 一种一体式基台及其制作、使用方法
CN105030356A (zh) * 2015-08-07 2015-11-11 山东迈尔口腔材料有限公司 一种义齿制作方法
CN105232169B (zh) * 2015-10-16 2018-07-31 福建中科康钛材料科技有限公司 多段式种植体组件及其制备方法
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WO2018064919A1 (fr) * 2016-10-06 2018-04-12 高雄医学大学 Implant intra-osseux et son procédé de préparation
CN109022853A (zh) * 2018-07-18 2018-12-18 昆明理工大学 一种抗菌Ti-Nb-Zr-Ag合金锭的制备方法
CN109332698B (zh) * 2018-12-04 2021-08-10 湖南顶立科技有限公司 一种口腔种植体的3d打印方法及口腔种植体
CN110251253A (zh) * 2019-06-21 2019-09-20 深圳市康泰健牙科器材有限公司 一种数字化种植基台选取方法和系统
CN110368114B (zh) * 2019-08-05 2021-06-22 四川大学 用预成嵌体封闭牙种植上部修复螺丝孔的数字化设计方法
CN111938849B (zh) * 2020-08-20 2021-12-21 深圳市亚能美邦医疗科技服务有限公司 一种数字化基台切削控制方法、系统及存储介质
CN111938850A (zh) * 2020-08-20 2020-11-17 深圳市康泰健牙科器材有限公司 一种个性化基台制作方法、系统及存储介质
CN112091854B (zh) * 2020-09-22 2021-05-25 成都贝施美生物科技有限公司 一种个性化基台的加工定位装置
CN114209460A (zh) * 2021-12-31 2022-03-22 成都贝施美生物科技有限公司 个性化基台的加工方法及装置

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