WO2023217254A1 - 牙科器械、牙科器械套组及其二者的设计方法和制备方法 - Google Patents

牙科器械、牙科器械套组及其二者的设计方法和制备方法 Download PDF

Info

Publication number
WO2023217254A1
WO2023217254A1 PCT/CN2023/093724 CN2023093724W WO2023217254A1 WO 2023217254 A1 WO2023217254 A1 WO 2023217254A1 CN 2023093724 W CN2023093724 W CN 2023093724W WO 2023217254 A1 WO2023217254 A1 WO 2023217254A1
Authority
WO
WIPO (PCT)
Prior art keywords
digital model
dental
dental instrument
jaw
limiting portion
Prior art date
Application number
PCT/CN2023/093724
Other languages
English (en)
French (fr)
Inventor
万广青
王星星
姚峻峰
叶傲冬
吴刚
庄慧敏
龚彩飞
沈杰
冯舒钦
张超群
Original Assignee
正雅齿科科技(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202210524961.7A external-priority patent/CN117084811A/zh
Priority claimed from CN202221263266.1U external-priority patent/CN217938413U/zh
Application filed by 正雅齿科科技(上海)有限公司 filed Critical 正雅齿科科技(上海)有限公司
Publication of WO2023217254A1 publication Critical patent/WO2023217254A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch

Definitions

  • the present application belongs to the field of orthognathic technology, more specifically a dental instrument and a dental instrument set for orthognathic surgery and a design method and preparation method thereof.
  • the combined orthognathic-orthodontic model is one of the options in the clinical treatment system.
  • the combined orthognathic and orthodontic treatment model can simultaneously solve the patient's occlusion and facial abnormalities, but the treatment process is complex, expensive, long, and traumatic. Even so, in order to restore their normal appearance and life, patients will still choose to undergo combined orthognathic and orthodontic treatment if financial conditions permit, and they often have higher requirements and expectations for the final treatment results.
  • the results of orthognathic and orthodontic treatment are more directly related to whether the patient can have a normal appearance in the next few decades of life and whether he can reintegrate into a normal social life. This puts forward higher requirements for orthognathic and orthodontic treatment.
  • the first is a simulated surgical test by separating and repositioning the dental model on the articulator to simulate the osteotomy movement of the maxilla and mandible and reconstruct the occlusion. Since the relative positional relationship between the maxilla and the upper dentition, and the mandible and the lower dentition is absolute and unique, the movement of the upper and lower jaws can be indirectly simulated by moving the upper and lower dentitions on the articulation frame, and the movement of the upper and lower jaws can be simulated through self-setting plastic.
  • the new bite marks of the upper and lower dentition are recorded to form a horseshoe-shaped positioning jaw plate, and then the positioning jaw plate is used to guide the movement of the upper and lower jaws during orthognathic surgery. It is not difficult to see that the accuracy of jaw plate positioning directly determines the final surgical effect.
  • jaw plate design is prone to errors, and the positioning jaw plate produced by model surgery cannot comprehensively and accurately guide orthognathic surgery.
  • the preoperative simulation of model surgery is based on two-dimensional images such as anteroposterior and lateral X-rays, and the two-dimensional images only have the shape of the dentition and alveolar bone, which cannot reflect the complex three-dimensional structure of the maxilla and mandible, and cannot be used to simulate orthognathic surgery.
  • Accurately predicting the spatial position of bones other than the alveolar bone after movement which also causes the actual surgical effect to be inconsistent with expectations.
  • Postoperative chin deviation or facial asymmetry may occur, which can only be corrected through a second surgery.
  • the relevant materials used to make the jaw plate themselves have deformations.
  • the process of making a jaw plate involves multiple operations such as making an alginate impression, pouring a plaster model, making a combined plaster abutment, and bonding the model.
  • the materials involved will deform to a certain extent, and the process of making a positioning jaw plate Self-setting plastics will also deform to a certain extent. This causes the jaw plate to be only partially in place during orthognathic surgery, or to be unstable or even unable to be in place, which greatly affects the accuracy of positioning the jaw plate.
  • the jaw plate manufacturing process is mainly manual operation, which will increase errors.
  • the production of model surgery and jaw plates is highly dependent on manual operations and the process is complex. From the initial preparation of the alginate model, frame transfer, to the final production of the self-adhesive plastic positioning jaw plate, the entire process is completed by hand. Manual operation errors cause errors in the positioning of the jaw plate and often affect the final surgical effect.
  • the self-setting plastic used to position the jaw plate is translucent or opaque. When it is inserted into the dentition during the operation, it is not possible to completely see whether all the dentition is in place accurately.
  • the depth of the bite mark of the positioning jaw plate is only 1 to 2 mm, which can only wrap part of the tooth cusps, and cannot accurately retain the segmented dentition in three dimensions, resulting in bone loss during the operation. Block movement error.
  • both the buccal and lingual sides extend 2 to 3 mm outward.
  • the technical problem solved by this application is to overcome the shortcomings of the existing technology and provide a new type of dental instrument for positioning the upper and lower jaw in orthognathic surgery, a dental instrument set, and the design method and preparation method of both. .
  • a dental instrument for orthognathic surgery including: a shell-shaped body with a tooth receiving cavity for accommodating multiple teeth on the jaw, and at least one constraint is provided on the lingual or labial side of the anterior tooth area of the shell-shaped body
  • a limiting portion of the opposing jaw dentition has a geometric structure that constrains the positional relationship between the dentition and the opposing jaw and stably maintains the dentition at the first target position, and the geometric structure has the function of compensating the The first thickness in the vertical upward distance between the first target position and the corresponding position of the limiting portion of the opposing jaw; the geometric structure has the function of compensating the first target position and the corresponding position of the limiting portion in the sagittal direction The second thickness of the distance between the opposing dentitions.
  • the occlusal surface of the posterior region of the shell-like body is provided with a limiting portion, and the limiting portion has the function of compensating the vertical upward distance between the first target position and the opposing dentition at its corresponding position. thickness of.
  • a dental instrument set including a first dental instrument and a second dental instrument.
  • the first dental instrument is a dental instrument as described in any one of the above, and the second dental instrument is as described in any one of the above.
  • the second dental instrument has a tooth receiving cavity with the same shape as the first dental instrument.
  • a design method for dental instruments including: obtaining a first initial dental digital model and a second initial opposing jaw digital model; obtaining a first dental digital model at a first target position according to the surgical plan; Designing at least one limiting portion digital model for constraining the opposing jaw dentition on the lingual or labial side of the anterior tooth region of the digital model specifically includes designing the feature information of the limiting portion digital model; wherein the feature information of the limiting portion digital model includes the The size information and preset position of the limiting portion digital model; the size information includes the second initial jaw counter number used by the limiting portion digital model to compensate for the corresponding positions of the first dental and jaw digital model and the limiting portion digital model.
  • a method for preparing a dental instrument a dental instrument is prepared according to the above-mentioned dental instrument.
  • the preparation method includes: a hot press molding preparation method or a direct 3D printing method.
  • a design method for a dental instrument set including: obtaining a first initial dental digital model and a second initial opposing jaw digital model; obtaining a first dental digital model at a first target position according to the surgical plan; in the first Designing at least one limiting part digital model that constrains the opposing jaw dentition on the lingual or labial side of the anterior tooth region of the dental and jaw digital model specifically includes designing the feature information of the limiting part digital model; wherein the feature information of the limiting part digital model includes The size information and preset position of the limiting portion digital model; the size information includes the second initial alignment of the limiting portion digital model to compensate for the corresponding positions of the first dental digital model and the limiting portion digital model.
  • Designing at least one second limiting portion digital model constraining the opposing jaw dentition on the lingual or labial side of the anterior dental region of the first dental jaw digital model specifically includes designing feature information of the second limiting portion digital model; wherein the third limiting portion digital model
  • the characteristic information of the two limiting portion digital models includes the size information and preset position of the second limiting portion digital model; the size information includes the second limiting portion digital model to compensate the first dental digital model and the third jaw digital model.
  • a method for preparing a dental instrument set According to the above-mentioned dental instrument set, a corresponding dental instrument set is prepared.
  • the preparation method includes: a hot press molding preparation method or a direct 3D printing method.
  • the tooth receiving cavity of the dental instrument in this application completely wraps the crowns of all teeth on the dentition, preventing the dental instruments from being removed from the teeth when used during the operation. Fall off.
  • the limiting portion on the dental instrument guides the dentition and jaw into position, so that the dentition and jaw that need to be moved are stably maintained at the target position that needs to be reached, which improves the accuracy and stability of orthognathic surgery.
  • the dental instrument provided by this application is provided with a limiting portion on the occlusal surface of the posterior teeth.
  • the limiting portion protrudes from the occlusal surface of the dental instrument toward the opposite jaw.
  • the dental instrument provided by this application is There is no protruding structure on the buccal side, which does not affect the intermaxillary ligation during surgery.
  • the design and preparation of the dental instruments and dental instrument sets in this application are all digitalized, and the data is connected with the digital orthognathic surgery, which effectively reduces the errors caused by manual manufacturing of jaw plates, and the occlusal bite marks are digitally designed. , the degree of wrapping of the opposing dentition can be adjusted as needed without manual adjustment, thus improving the accuracy of orthognathic surgery.
  • Figure 1 is a schematic diagram of an embodiment of the dental instrument of the present application.
  • Figure 2 is a schematic front view of the dental instrument of the present application.
  • Figure 3 is a schematic top view of the dental instrument of the present application.
  • Figure 4 is a schematic diagram of the dental instrument of the present application from another perspective
  • Figure 5 is a schematic diagram of the dental instrument of the present application from another perspective
  • Figure 6 is a schematic rear view of the dental instrument of the present application.
  • Figure 7 is a schematic diagram of another embodiment of the dental instrument of the present application.
  • Figure 8 is a schematic diagram of another embodiment of the dental instrument of the present application.
  • Figure 9 is a schematic diagram of the dental instrument set in use according to the present application.
  • Figure 10 is a flow chart of the design method and preparation method of the dental instrument of the present application.
  • Figure 11 is a flow chart of the design method and preparation method of the dental instrument set of the present application.
  • orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation or be configured in a specific orientation. and operation, and therefore cannot be construed as a limitation on this application.
  • first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection or integral connection
  • connection or integral connection
  • connection can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be an internal connection between two components.
  • specific meanings of the above terms in this application can be understood on a case-by-case basis.
  • the dental instrument used for orthognathic surgery in this application is made of transparent polymer material with a thickness between 1.0mm and 1.5mm.
  • the transparent material can facilitate the doctor to observe the position of the moved teeth during use. condition (dental Whether it has been accurately moved to the target position), improving the accuracy of the surgery.
  • the thickness of the dental instrument is set between 1.0mm and 1.5mm, which can reduce the impact of the thickness of the dental instrument on the surgical accuracy.
  • the dental instrument is worn on the maxillary dentition or the mandibular dentition during use. In some embodiments, it can be worn on the maxillary dentition, because the maxillary dentition is located in front of the mandibular dentition.
  • the dental instrument When worn on the maxillary dentition, Only the limiting part on the dental instrument can extend in the sagittal direction to locate the positional relationship between the upper and lower jaws. The advantage of the limiting part extending in the sagittal direction is that the design of the limiting part does not affect the labial muscles.
  • the dental instrument in this application has a shell-shaped body 1 that accommodates a tooth receiving cavity 11 corresponding to multiple teeth on the jaw.
  • the tooth receiving cavity 11 can be designed to accommodate some teeth on the corresponding jaw. Or all the teeth, in some embodiments, can accommodate all the teeth on the corresponding jaw. In some orthognathic surgeries, narrow jaws need to be divided. The jaws are divided into 2-4 pieces according to the surgical plan. Dental instruments with all tooth receiving cavities 11 can position the teeth in different parts of the divided jaws. relative position between bone fragments.
  • the lingual or labial side of the anterior tooth area of the shell-shaped body 1 of the dental instrument is provided with at least one limiting portion 12 for constraining the opposing jaw dentition.
  • the geometric structure has the function of compensating the positional relationship between the first target position and the corresponding position of the limiting portion 12 in the vertical direction (the direction of the X-axis in the figure). ); the geometric structure has a second thickness H2 extending in the sagittal direction (the direction of the Y-axis in the figure) to compensate for the distance between the first target position and the opposing dentition at the corresponding position of the limiting portion 12 .
  • the anterior tooth area in this application refers to teeth No.
  • the shell-shaped body 1 of the dental instrument is worn on the maxillary dentition, and the limiting portion 12 is provided on the lingual side.
  • orthognathic surgery will first move the maxillary bone, put dental instruments on the maxillary dentition, and use the mandibular dentition as a reference. By moving the dental instruments, the maxillary dentition and maxillary bone will be moved, and the maxillary bone will be moved. Positioned at the first target position of surgical design.
  • the design position of the wearing dentition of the shell-like body 1 and the limiting portion 12 can be changed according to the orthognathic surgery plan.
  • the first target position is the mandible in front of the maxilla
  • the shell-shaped body 1 can be designed to be worn on the mandibular dentition, and the limiting portion 12 is arranged in the sagittal direction.
  • the shell-like body 1 can also be designed to be worn on the maxillary dentition, and the limiting portion 12 is provided on the labial side.
  • the limiting portion 12 extends vertically and sagittally toward the opposing jaw to cover part of the crown of the opposing jaw teeth, so as to stably maintain the relative position of the upper and lower jaws at the first target position according to the surgical plan.
  • the geometric structure of the limiting portion 12 compensates for the distance in the vertical direction (the direction of the X-axis in the figure) between the first target position and the opposing dentition at the corresponding position of the limiting portion 12 being the first thickness H1;
  • the distance between the first target position and the corresponding position of the limiting portion 12 in the sagittal direction (the direction of the Y-axis in the figure) is the second thickness H2.
  • the sagittal direction in this application is the direction perpendicular to the tangent line of the dental arch at the corresponding position.
  • the limiting portion 12 covers 1/2-2/3 of the crown of the anterior teeth at the corresponding position of the opposing jaw.
  • the extension length of the limiting portion 12 in the vertical direction is 1 mm-2 mm.
  • the limiting part 12 covers 1/2-2/3 of the crown of the anterior teeth at the corresponding position of the opposing jaw, and the limiting part 12 can cover 1 mm-2 mm of the labial and/or lingual side of the teeth at the corresponding position of the opposing jaw.
  • the advantage of this design is that the movable jaws can be accurately positioned at the first target position, and can also reduce the obstruction of the shell-shaped body 1 to the surgeon's view of the positioning of the jaws, thereby ensuring the accuracy of the operation.
  • the length of the limiting portion 12 along the dental arch direction accounts for 20%-40% of the dental arch.
  • one end of the limiting portion 12 adjacent to the opposing jaw dentition has a defining structure that restricts the freedom of movement of the dentition and the opposing jaw in the sagittal direction.
  • the defining structure is an occlusal impression that matches the shape of the corresponding teeth of the opposing dentition.
  • the length of the limiting portion 12 along the dental arch direction P-P' accounts for 20%-40% of the dental arch. In some embodiments, the length of the limiting portion 12 along the dental arch direction P-P' accounts for 40% of the dental arch, so as to provide a more accurate positioning effect.
  • one end of the limiting portion 12 adjacent to the opposing jaw dentition has a limiting structure that restricts the movement freedom of the teeth and the opposing jaw in the sagittal direction.
  • the limiting structure is an occlusion mark that matches the shape of the corresponding teeth of the opposing jaw dentition.
  • the bite mark matches the concave and convex shape of the corresponding teeth in the opposing dentition, so that the teeth can be accurately positioned at the first target position without unwanted movement.
  • the occlusal surface of the posterior tooth region of the shell-like body 1 is provided with a limiting portion 13 , and the limiting portion 13 has a thickness that compensates for the vertical upward distance between the first target position and its corresponding position of the opposing dentition.
  • the limiting portion 13 covers 1/3-1/2 of the crown of the posterior teeth at the corresponding position of the opposing jaw.
  • the length of the limiting portion 12 and the limiting portion 13 along the dental arch direction accounts for 40%-80% of the dental arch.
  • the limiting portion 13 has a limiting structure that restricts the freedom of movement of the dentition and the opposing jaw in the horizontal direction.
  • the limiting structure has a friction matching structure with the occlusal surface of the corresponding teeth in the opposing jaw dentition.
  • the limiting structure is a structure that matches the concave and convex shapes of corresponding teeth in the opposing jaw dentition.
  • the limiting structure is an occlusion mark that matches the shape of the corresponding teeth of the opposing dentition.
  • the occlusal surface of the posterior teeth area of the shell-like body 1 is also provided with a limiting portion 13.
  • the limiting portion 13 compensates for the gap between the first target position and the corresponding position of the opposing dentition.
  • the vertical upward distance is thickness H3.
  • the posterior tooth area in this application refers to teeth No. 5-8, that is, the second premolar, the first permanent tooth, the second permanent tooth and the wisdom teeth.
  • the limiting part 13 vertically covers 1/3-1/2 of the crown of the posterior teeth at the corresponding position of the opposite jaw.
  • the crowns of the posterior teeth are shorter than the crowns of the anterior teeth, and because the space in the oral cavity of the posterior teeth is relatively narrow , therefore, the limiting portion 13 vertically covers 1/3-1/2 of the mandibular crown, which can ensure the positioning of the teeth in the posterior teeth area, leaving enough observation space for the doctor to observe the positioning of the teeth.
  • the length of the limiting portion 12 and the limiting portion 13 on the shell-like body 1 along the dental arch direction accounts for 40%-80% of the dental arch.
  • the limiting portion 13 also has a limiting structure that restricts the freedom of movement of the teeth and the opposing jaws in the horizontal direction.
  • the occlusal surface has a friction matching structure, that is, the surface of the limiting structure opposite to the opposing dentition is a friction surface.
  • the friction coefficient of the friction surface can prevent the corresponding teeth of the opposing dentition from sliding relative to each other when they contact the friction surface.
  • the limiting structure is an bite mark that matches the shape of the corresponding teeth in the opposing jaw dentition.
  • the occlusion mark is a concave and convex match with the shape of the corresponding teeth of the opposing dentition, so that the teeth can be accurately positioned at the first target position without unwanted movement.
  • the limiting structure can also be the corresponding teeth of other opposing dentitions without the occlusion mark.
  • Shape matching concave and convex matching structures that is, other structures that meet the requirements of limiting the freedom of movement of the teeth and the opposing jaw in the horizontal direction.
  • the lingual and buccal sides of the limiting structure respectively extend in the direction of the opposing jaw to form a gap that covers the corresponding teeth of the opposing jaw.
  • the groove of the dental crown enables the limiting part to limit the freedom of movement of the opposing jaw in the horizontal direction.
  • the number of defining portions 12 is an even number, and all defining portions 12 are arranged symmetrically about the tooth midline.
  • the number of defining portions 12 is an even number, and the plurality of defining portions 12 are arranged symmetrically about the tooth midline A-A’.
  • the number of the limiting portions 13 is also an even number, and they are also arranged symmetrically about the tooth center line.
  • the shell-like body 1 can also be provided with a limiting portion 12 and/or two limiting portions 13 in the anterior tooth area. There is a gap between the limiting portion 12 and the limiting portion 13.
  • One limiting portion 12 The two limiting parts 13 are also arranged symmetrically with respect to the tooth midline.
  • the advantage of the symmetrical arrangement with respect to the tooth midline is that the limiting portion 13 and/or the limiting portion 12 can evenly distribute the load of the teeth, making the positioning of the teeth more accurate.
  • the interproximal space is set between teeth No. 1-1, or between the distal portion of tooth No. 2 and the mesial portion of tooth No. 3, or the distal portion of tooth No. 4 and tooth No. 5. between the near center.
  • the interproximal spaces are positioned symmetrically about the tooth midline.
  • interproximal gap between adjacent defining portions 12 .
  • inter-adjacent gap between adjacent limiting parts 12 and adjacent limiting parts 13 .
  • the interproximal space is set between teeth No. 1 and 1, or between the distal part of tooth No. 2 and the mesial part of tooth No. 3, or between the distal part of tooth No. 4 and the mesial part of tooth No. 5.
  • the interproximal space is set symmetrically about the tooth midline. The setting of the interproximal space allows the doctor to observe the positioning of the teeth during surgery.
  • the shell body 1 is provided with a mounting platform for the limiting portion 12 , the mounting platform has a first bonding surface, and the limiting portion 12 has a second bonding surface.
  • the surface of the first bonding surface matches the surface shape of the second bonding surface.
  • a flat surface that is easy to manufacture into an industrial standard part is used, and the standard is unified during the production process to facilitate mass production and manufacturing.
  • the limiting portion 12 can be directly fixedly connected to the lingual side and/or labial side of the shell-like body 1 through ultrasonic welding. The production cost is reduced, and the production process is clean and pollution-free.
  • the shell-shaped body 1 and the limiting part 12 when the limiting part 12 and the shell-like body 1 have a separate structure, the shell-shaped body 1 and the limiting part 12 have a structure of snapping with each other.
  • the snap-fitting portion cooperates so that the limiting portion 12 is detachably fixed on the shell-like body 1, such as a mortise-and-tenon structure.
  • the shell-like body 1 can be used multiple times in different steps by replacing the limiting portion 12 .
  • the stiffness of the defining portion 12 is greater than the stiffness of the first shell-like 1 body.
  • the elastic modulus of the material of the defining portion 12 is greater than the elastic modulus of the material of the shell-like body 1 .
  • the shell-like body 1 and the limiting portion 12 are an integral structure, and the thickness of the limiting portion 12 is greater than the thickness of the shell-like body 1 .
  • the limiting portion 12 is provided with reinforcing ridges on the left and right sides.
  • the stiffness of the defining portion 12 is greater than the stiffness of the shell-like body 1 .
  • the elastic modulus of the material of the limiting portion 12 is greater than the elastic modulus of the material of the shell-like body 1 .
  • the thickness of the limiting portion 12 may be slightly larger than the thickness of the shell-like body 1 .
  • the thickness of the shell-like body 1 is in the range of 0.5mm-1.0mm, and the thickness of the limiting portion 12 is in the range of 0.55mm-1.05mm.
  • the limiting portion 12 has a multi-layer structure to enhance the strength of the limiting portion 12 and thus improve the deformation resistance of the limiting portion 12 .
  • the multilayer structure includes at least an inner layer on the side closer to the tooth and an outer layer on the side farther from the tooth.
  • the elastic modulus of the outer layer material may be greater than the elastic modulus of the inner layer material.
  • the inner layer material can be made of materials with an elastic modulus ranging from 0.2Mpa to 500Mpa
  • the outer layer material can be made of materials with an elastic modulus ranging from 0.5Mpa to 600Mpa.
  • the thickness of the outer layer may be greater than the thickness of the inner layer, which may range from 0.05 mm to 0.5 mm, and the thickness of the outer layer may range from 0.3 mm to 0.7 mm. .
  • the left and right sides of the limiting portion 12 are provided with reinforcing ridge structures.
  • the reinforcing ridges can be convex or concave structures from the surface of the limiting portion 12 .
  • the present application also includes a dental instrument set having a first dental instrument and a second dental instrument.
  • the first shell-shaped body 1 of the first dental instrument and the second shell-shaped body 2 of the second dental instrument are according to The first dental jaw and the second jaw are respectively positioned sequentially, and the second dental instrument has a tooth receiving cavity 21 that is consistent in shape with the first dental instrument.
  • the second shell body 2 also has a second limiting portion 22 and/or a second limiting portion 23 .
  • Orthognathic surgery works by moving the errant upper and lower jaw bones to their normal positions and then refixing them until the bones heal. Therefore, in most cases, the patient's upper and lower jaws will need to be moved.
  • the dental instrument set in this application can be used to ensure that the upper and lower jaws are moved to the correct target position.
  • step P1 first move the patient's upper jaw according to the surgical plan. Under the premise that the position of the lower jaw remains unchanged, the patient first wears the first shell-shaped body 1 on the upper jaw dentition, and then lowers the lower jaw. As a reference, the limiting part 12 and/or the limiting part 13 are stuck on the mandibular dentition so that the upper jaw is positioned at the first target position, and then the maxilla is fixed with the titanium plate 3, and then the first shell-shaped body 1 is removed. .
  • Step P2 Using the upper jaw as a reference, the second shell-shaped body 2 is also worn on the upper jaw dentition, and the lower jaw dentition is stuck at the second limiting part 22 and/or the second limiting part 23, so that the lower jaw moves to the second limiting part 22 and/or the second limiting part 23.
  • Second target position then perform intermaxillary ligation and fixation, and fix the mandible with titanium plate 3.
  • the advantage of both the first shell-shaped body 1 and the second shell-shaped body 2 being worn on the maxillary dentition is that the crowns of the maxillary teeth are generally larger than the crowns of the lower mandibular teeth. Therefore, the shell-shaped body is worn on the maxillary teeth.
  • the retention force on the columns is stronger, making the shell-shaped body less likely to fall off during use.
  • This application also discloses a design method and preparation method of dental instruments, as shown in Figure 10.
  • Step 101 Generate a digital model.
  • the patient's digital upper jaw model (first initial jaw digital model) and digital mandibular model (second initial jaw digital model) provided by medical staff or other professionals, or obtain the patient's digital upper jaw model generated and input by other equipment model and digital mandibular model, that is, the acquisition method or approach of the patient's digital maxillary model and digital mandibular model is not limited.
  • Step 102 digital limiter setting.
  • the set position; the size information includes the first digitized thickness of the vertical upward distance between the first dental digital model of the limiting portion digital model and the second initial jaw-matching digital model at the corresponding position of the limiting portion digital model; the limiting portion digital model compensates the first The second digitized thickness of the sagittal upward distance between the first dental and jaw digital model and the second initial opposing jaw digital model at the corresponding position of the limiting part digital model; based on the first dental and jaw digital model and the limiting part digital model, generate a defining part The first target tooth digital model of the digital model; the first thickness and the second thickness satisfy that the digital defining part covers 1/2-2/3 of the anterior tooth crown at the corresponding position of the digital mandibular model.
  • Step 103 manufacture dental instruments.
  • a first dental instrument with a tooth receiving cavity for accommodating multiple maxillary teeth is manufactured based on the first target dental digital model.
  • the limiting portion on the first dental instrument has the function of constraining the positional relationship between the teeth and the opposing jaw and stabilizing the teeth. Maintain the geometry at the first target position.
  • Step 103 can use additive manufacturing to manufacture dental instruments.
  • Additive manufacturing can also be called 3D printing. It integrates computer-aided design, material processing and molding technology, and is based on digital model files. Special metal materials, non-metal materials and medical biological materials are extruded through software and CNC systems. , sintering, melting, light curing, spraying and other methods to accumulate layer by layer to create manufacturing technology of physical objects.
  • the dental instrument can be manufactured by hot pressing film.
  • additive manufacturing is used to manufacture a physical model of the first target tooth and jaw digital model, and then a hot stamping film is performed on the physical model to manufacture the first dental instrument.
  • This application also discloses a design method and preparation method of a dental instrument set, as shown in Figure 11.
  • Step 201 Generate a digital model.
  • the patient's digital upper jaw model (first initial jaw digital model) and digital mandibular model (second initial jaw digital model) provided by medical staff or other professionals, or obtain the patient's digital upper jaw model generated and input by other equipment model and digital mandibular model, that is, the acquisition method or approach of the patient's digital maxillary model and digital mandibular model is not limited.
  • Step 202 digital limiter setting.
  • the limiting portion digital model characteristic information includes size information and preset position of the limiting portion digital model;
  • the size information includes the limiting portion digital model to compensate the first dental jaw digital model and the limiting portion
  • the limiting part digital model compensates the second initial jaw-matching digital model at the corresponding position of the first dental jaw digital model and the limiting part digital model
  • Designing at least one second limiting portion digital model constraining the opposing jaw dentition on the lingual or labial side of the anterior dental region of the first dental jaw digital model specifically includes designing feature information of the second limiting portion digital model; wherein the second limiting portion
  • the digital model feature information includes the size information and preset position of the second limiting part digital model; the size information includes the second limiting part digital model to compensate for the second jaw number corresponding to the first dental digital model and the second limiting part digital model.
  • the first digital thickness of the vertical upward distance between the models; the second limiting portion digital model compensates for the sagittal upward distance between the first dental digital model and the second pair of jaw digital models at the corresponding positions of the second limiting portion digital model.
  • a second target dental jaw digital model having a second limiting portion digital model is generated.
  • Step 203 Manufacture a dental instrument set.
  • a first dental instrument with a tooth receiving cavity for accommodating multiple maxillary teeth is manufactured based on the first target dental digital model.
  • the limiting portion on the first dental instrument has the function of constraining the positional relationship between the teeth and the opposing jaw and stabilizing the teeth.
  • the geometric structure is maintained at the first target position;
  • a second dental instrument having a tooth receiving cavity for accommodating multiple maxillary teeth is manufactured according to the second target dental jaw digital model, and the limiting portion on the second dental instrument has a constraining tooth jaw and an opposing jaw.
  • the geometric structure that maintains the positional relationship between the jaws and stabilizes the jaws at the second target position.
  • Step 203 may use additive manufacturing to manufacture the shell-shaped dental instrument set.
  • Additive manufacturing can also be called 3D printing. It integrates computer-aided design, material processing and molding technology, and is based on digital model files. Special metal materials, non-metal materials and medical biological materials are extruded through software and CNC systems. , sintering, melting, light curing, spraying and other methods to accumulate layer by layer to create manufacturing technology of physical objects.
  • each module involved in this embodiment is a logical module.
  • a logical unit can be a physical unit, or a part of a physical unit, or it can be multiple physical units. The combination of units is realized.
  • units that are not closely related to solving the technical problems raised in this application are not introduced in this embodiment, but this does not mean that other units do not exist in this embodiment.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

一种牙科器械及牙科器械套组及其二者的设计方法和制备方法。用于正颌手术的牙科器械具有容纳牙颌上多个牙齿的牙齿收纳腔(11)的壳状本体(1)，壳状本体(1)的前牙区的舌侧面或唇侧面设有至少一个约束对颌牙列的限定部(12)，限定部(12)具有约束牙颌与对颌之间位置关系并使牙颌稳定保持在第一目标位的几何结构，几何结构具有补偿第一目标位与限定部(12)对应位置的对颌牙列之间在垂直向上距离的第一厚度(H1)；几何结构具有在矢状向上补偿第一目标位与限定部(12)对应位置的对颌牙列之间距离的第二厚度(H2)。

Description

牙科器械、牙科器械套组及其二者的设计方法和制备方法
相关申请的交叉引用
本申请基于申请号为“202210524961.7”、申请日为2022年5月13日的中国专利申请，以及，“202221263266.1”、申请日为2022年5月13日的中国专利申请提出，并要求上述中国专利申请的优先权，上述中国专利申请的全部内容在此以引入方式并入本申请。
技术领域
本申请属于正颌技术领域，更确切地说一种用于正颌外科手术的牙科器械和牙科器械套组及其二者的设计方法和制备方法。
背景技术
在面部发育过程中，若颌骨生长发育出现异常，会造成上下颌骨体积、形态异常，并伴发牙合关系及口颌系统功能异常。临床表现为“地包天”，“没下巴”，“脸歪”等颌面部骨性错颌畸形。严重的骨性错颌畸形，不仅影响咀嚼、发音等功能，明显异于常人的容貌更给患者日常社交带来巨大的心理压力。
对于这类严重骨源性突面、凹面畸形、关节源性及颌骨发育性偏颌畸形，正颌－正畸联合模式是临床治疗体系的选项之一。正颌正畸联合治疗模式可同时解决患者咬合和面型的异常，但其治疗过程复杂，费用昂贵，疗程长，创伤大。即便如此，为了能恢复正常容貌及生活，在经济条件允许的情况下，患者仍会选择进行正颌正畸联合治疗模式，且往往对最终的治疗结果抱有更高的要求和期待。正颌正畸治疗结果更直接关系到患者未来生活的几十年是否可以拥有正常的容貌，能否重新融入正常的社交生活。这都给正颌正畸的治疗提出了更高的要求。
目前，随着电脑技术的发展，数字化正颌外科的介入，使得正颌手术的术前设计实现数字化、可视化。但数字化的手术设计若无法精确实现，再完美的设计都是空谈。因此，正颌手术数字化设计的精准实现，直接关乎正颌正畸联合治疗的最终效果，同时也是国际临床研究的热点、难点。
在大多数的正颌手术当中，首先是在合架上通过对牙颌模型的分离、再定位，模拟上下颌骨截骨移动并重建咬合的模拟手术试验。由于上颌骨与上牙列、下颌骨与下牙列的相对位置关系是绝对且唯一的，因此可在合架上通过移动上下牙列来间接模拟上下颌骨的移动情况，并通过自凝塑料记录上下牙列新的咬合印迹，形成马蹄形定位颌板，再通过定位颌板指导正颌术中上下颌骨的移动。不难看出，定位颌板的准确性直接决定了最终的手术效果。
但是颌板设计容易存在误差，模型外科生产的定位颌板无法全面准确指导正颌手术。模型外科的术前模拟基于正侧位X线片等二维影像实现，且二位影像仅有牙列、牙槽骨形态，无法体现上下颌骨复杂的三维结构，在模拟正颌手术时无法准确预测除牙槽骨以外骨骼移动后的空间位置，这也造成真实手术效果与预想不一致，术后可能出现颏部偏斜或面部不对称等情况，只能通过二次手术进行修正。
其次，制造颌板的相关材料自身存在形变。颌板制作过程涉及藻酸盐印模制取、石膏模型灌注、合架石膏基台制作、模型粘结等多种操作，这其中涉及的材料都会发生一定程度的形变，而制作定位颌板的自凝塑料也会有一定比例的形变。这就造成正颌术中颌板有时只能部分就位或就位不稳、甚至无法就位，这些都极大地影响了定位颌板的准确性。
此外，颌板制作过程主要由人工操作，人工操作会增大误差。模型外科及颌板的制作高度依赖人工操作，而且流程复杂。从最初的藻酸盐模型制取、合架转移，到最终的自凝塑料定位颌板制作，全程都由纯手工完成，人工操作误差造成定位颌板的误差，也常常影响最终手术效果。
同时，颌板术中、术后使用时会存在误差。定位颌板采用的自凝塑料为半透明或不透明材料，术中戴入牙列就位时，并不能完全看清牙列是否全部准确就位。而对于需要颌骨分块手术的患者，定位颌板咬合印迹深度仅为1～2mm，仅能包裹部分牙尖，更无法从三维方向对分块的牙列进行准确固位，造成术中骨块移动误差。定位颌板为实现牙齿包裹，颊舌侧均向外侧延伸2～3mm。在正颌术中固定上下牙列进行颌间结扎时，其唇颊侧延伸部分常影响不锈钢结扎丝就位，存在结扎不紧的可能性。
现今，随着数字化医学的兴起，数字化正颌外科的开展，很好地克服了传统模型外科在手术设计的弊端。通过基于头颅CT的三维成像技术，可在软件中真实模拟手术截骨的位置，形象地显示骨块的切割和移动情形，并利用三维打印技术，制作定位颌板。数字化正颌外科的开展，虽可避免传统模型外科造成的颌板设计误差，但颌板形态仍维持原有形态，且仍需要人工调磨去除干扰，三维打印颌板的打印材料完全不透明，其准确性和临床使用感受仍然欠佳。而国内目前绝大多数医疗单位仍采用传统模型外科制作定位颌板。
为此，本申请针对上述问题提供了一种解决方案。
发明内容
本申请解决的技术问题是克服现有技术存在的缺陷，提供了一种新型的正颌手术中的用于定位上下颌位置的牙科器械、牙科器械套组及其二者的设计方法和制备方法。
为了实现上述目的，本申请采用的技术方案如下：
一种用于正颌手术的牙科器械，包括：具有容纳牙颌上多个牙齿的牙齿收纳腔的壳状本体，所述壳状本体的前牙区的舌侧面或唇侧面设有至少一个约束对颌牙列的限定部，所述限定部具有约束所述牙颌与对颌之间位置关系并使所述牙颌稳定保持在第一目标位的几何结构，所述几何结构具有补偿所述第一目标位与所述限定部对应位置的对颌牙列之间在垂直向上距离的第一厚度；所述几何结构具有在矢状向上补偿所述第一目标位与所述限定部对应位置的对颌牙列之间距离的第二厚度。
在一些实施例中，所述壳状本体的后牙区的咬合面设有限位部，所述限位部具有补偿所述第一目标位与其对应位置的对颌牙列之间在垂直向上距离的厚度。
一种牙科器械套组，包括第一牙科器械和第二牙科器械，所述第一牙科器械为如上述中任意一项所述的牙科器械，所述第二牙科器械为如上述中任意一项所述的牙科器械，所述第二牙科器械具有与所述第一牙科器械形状一致的牙齿收纳腔。
一种牙科器械的设计方法，包括：获取第一初始牙颌数字模型和第二初始对颌数字模型；根据手术计划获取第一目标位的第一牙颌数字模型；在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计所述限定部数字模型特征信息；其中所述限定部数字模型特征信息包括所述限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在垂直向上距离的第一数字化厚度；所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；基于所述第一牙颌数字模型和所述限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；利用第一目标牙颌数字模型设计制造第一牙科器械，其中第一牙科器械为如权利要求上述中任意一项所述的牙科器械，所述第一牙科器械上的限定部具有约束牙颌与对颌之间位置关系并使所述牙颌稳定保持在第一目标位的几何结构。
一种牙科器械的制备方法：根据上述所述的一种牙科器械的进行相应的牙科器械的制备，制备方法包括：热压成型的制备方法或直接3D打印的方法。
一种牙科器械套组的设计方法，包括：获取第一初始牙颌数字模型和第二初始对颌数字模型；根据手术计划获取第一目标位的第一牙颌数字模型；在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计所述限定部数字模型特征信息；其中所述限定部数字模型特征信息包括所述限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在垂直向上距离的第一数字化厚 度；所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；基于所述第一牙颌数字模型和所述限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；根据手术计划获取第二目标位的第二对颌数字模型，在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的第二限定部数字模型，具体包括设计所述第二限定部数字模型特征信息；其中所述第二限定部数字模型特征信息包括所述第二限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述第二限定部数字模型补偿所述第一牙颌数字模型与所述第二限定部数字模型对应位置的所述第二对颌数字模型之间在垂直向上距离的第一数字化厚度；所述第二限定部数字模型补偿所述第一牙颌数字模型与所述第二限定部数字模型对应位置的所述第二对颌数字模型之间在矢状向上距离的第二数字化厚度；基于所述第一牙颌数字模型和所述第二限定部数字模型，生成具有第二限定部数字模型的第二目标牙颌数字模型；利用第一目标牙颌数字模型设计制造第一牙科器械，其中第一牙科器械为如上述中任意一项所述的牙科器械；利用第二目标牙颌数字模型设计制造第二牙科器械，其中第二牙科器械为如上述中任意一项所述的牙科器械；所述第二牙科器械具有与所述第一牙科器械形状一致的牙齿收纳腔。
一种牙科器械套组的制备方法，根据上述所述的一种牙科器械套组的进行相应的牙科器械套组的制备，制备方法包括：热压成型的制备方法或直接3D打印的方法。
通过本申请提供的牙科器械及牙科器械套组及其二者的设计方法和制备方法，能够带来以下至少一种有益效果：
1、与传统的正颌手术颌板相比，本申请中的牙科器械的牙齿收纳腔对牙列上的所有牙齿的牙冠进行完整的包裹，避免在术中使用时，牙科器械从牙齿上脱落下来。此外，通过牙科器械上的限定部引导牙列以及颌骨进行就位，使需要移动的牙列和颌骨稳定地保持在需要到达的目标位，提高了正颌手术的准确性和稳定性。
2、本申请提供的牙科器械在后牙区的咬合面设有限位部，限位部从牙科器械的咬合面向对颌方向凸起，相较于传统的颌板，本申请提供的牙科器械在颊侧无突出结构，从而不影响术中的颌间结扎。
3、本申请牙科器械以及牙科器械套组的设计和制备全程采用数字化，与数字化正颌外科进行数据衔接，有效地减小了人工制造颌板带来的误差，且合面咬合印迹为数字化设计，可根据需要调节对颌牙列包裹程度，无需人工调磨，从而提高正颌手术的准确性。
附图说明
下面将以明确易懂的方式，结合附图说明实施例，对上述特性、技术特征、优点及其实现方式予以进一步说明。
图1为本申请牙科器械的一种实施例的示意图；
图2为本申请牙科器械的主视示意图；
图3为本申请牙科器械的俯视示意图；
图4为本申请牙科器械的另一视角示意图；
图5为本申请牙科器械的另一视角示意图；
图6为本申请牙科器械的后视示意图；
图7为本申请牙科器械的另一种实施例的示意图；
图8为本申请牙科器械的另一种实施例的示意图；
图9为本申请牙科器械套组使用状态的示意图；
图10为本申请牙科器械的设计方法和制备方法的流程图；
图11为本申请牙科器械套组的设计方法和制备方法的流程图。
具体实施方式
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对照附图说明本申请的具体实施方式。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，并获得其他的实施方式。
本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
本申请中的一种用于正颌手术的牙科器械采用透明的聚合物材料制造，厚度在1.0mm-1.5mm之间，透明材料可便于医生在使用过程中，观察被移动牙颌的就位情况(牙颌 是否准确地移动到了目标位)，提高了手术的准确性。并且，牙科器械的厚度设置在1.0mm-1.5mm之间，能够降低牙科器械的厚度对手术精度的影响。
此外，牙科器械在使用过程中佩戴于上颌牙列或者下颌牙列上，在一些实施例中，可以是佩戴在上颌牙列上，因为上颌牙列位于下颌牙列前方，佩戴在上颌牙列时，牙科器械上的限定部才能向矢状向延伸用于定位上下颌之间的位置关系，限定部向矢状向延伸的好处在于，限定部的设计不对唇肌进行影响。
请参考图1-3所示，本申请中的牙科器械具有容纳对应牙颌上多个牙齿的牙齿收纳腔11的壳状本体1，牙齿收纳腔11可以设计为容纳对应牙颌上的部分牙齿或者全部牙齿，在一些实施例中，可以是容纳对应牙颌上的所有牙齿。在一些正颌手术中，需要对狭窄的颌骨进行分开，根据手术计划将颌骨分成2-4块，具有所有牙齿收纳腔11的牙科器械，可以定位不同的部分的牙齿对分开的颌骨骨块之间的相对位置进行定位。
请参考图1-3所示，牙科器械的壳状本体1的前牙区的舌侧面或唇侧面设有至少一个约束对颌牙列的限定部12，限定部12具有约束牙颌与对颌之间位置关系并使牙颌稳定保持在第一目标位的几何结构，几何结构具有补偿第一目标位与限定部12对应位置的对颌牙列之间在垂直向(图中X轴的方向)上距离的第一厚度H1；几何结构具有在矢状向(图中Y轴的方向)上延伸补偿第一目标位与限定部12对应位置的对颌牙列之间距离的第二厚度H2。其中，本申请的前牙区指1-4号牙，也就是中切牙、侧切牙、尖牙和第一前磨牙。在一些实施例中，牙科器械的壳状本体1佩戴在上颌牙列，限定部12设置在舌侧面。一般情况下，正颌手术会先进行上颌骨的移动，将牙科器械佩戴在上颌牙列上，将下颌牙列作为参照物，通过移动牙科器械，进而移动上颌牙列和上颌骨，将上颌骨定位于手术设计的第一目标位。但是，壳状本体1的佩戴牙列以及限定部12的设计位置可根据正颌手术方案进行改变。例如，针对三类错颌畸形的病例，根据手术方案，第一目标位为下颌在上颌前面，那么壳状本体1可以设计为佩戴在下颌牙列上，限定部12设置在矢状向。或者，壳状本体1也可以设计为佩戴在上颌牙列上，限定部12设置在唇侧面。
本申请中限定部12通过在垂直方向上以及矢状方向上向对颌方向延伸至覆盖对颌牙齿部分牙冠，以达到使上下颌的相对位置关系根据手术方案稳定保持在第一目标位。限定部12的几何结构补偿第一目标位与限定部12对应位置的对颌牙列之间在垂直向(图中X轴的方向)上距离为第一厚度H1；限定部12的几何结构在矢状向(图中Y轴的方向)上补偿第一目标位与限定部12对应位置的对颌牙列之间距离为第二厚度H2。需要补充说明的是，本申请中的矢状向为与对应位置牙弓切线垂直的方向。
在一些实施例中，限定部12覆盖对颌对应位置的前牙牙冠的1/2-2/3。
在一些实施例中，限定部12在垂直向的延伸长度为1mm-2mm。
在垂直方向上限定部12覆盖对颌对应位置的前牙牙冠的1/2-2/3，并且，限定部12能够覆盖对颌对应位置牙齿的唇侧面和/或舌侧面的1mm-2mm。这样设计的好处在于，可移动的牙颌既能够实现准确地定位在第一目标位，并且还能够降低壳状本体1对于手术医生观察牙颌定位情况的视线遮挡，从而确保手术的准确性。
在一些实施例中，限定部12沿牙弓方向的长度占牙弓的20％-40％。
在一些实施例中，限定部12邻近对颌牙列的一端具有约束牙颌与对颌在矢状上的移动自由度的限定结构。
在一些实施例中，限定结构为与对颌牙列对应牙齿形状匹配的咬合印记。
参考图4所示，限定部12沿牙弓方向P-P’的长度占牙弓的20％-40％。在一些实施例中，限定部12沿牙弓方向P-P’的长度占牙弓的40％，以便于提供更加精准的定位效果。参考图5所示，限定部12邻近对颌牙列的一端具有约束牙颌与对颌在矢状上的移动自由度的限定结构，限定结构为与对颌牙列对应牙齿形状匹配的咬合印记，咬合印记与对颌牙列对应牙齿形状凹凸匹配，使得牙颌能够精准地定位于第一目标位，不发生不期望的移动。
在一些实施例中，壳状本体1的后牙区的咬合面设有限位部13，限位部13具有补偿第一目标位与其对应位置的对颌牙列之间在垂直向上距离的厚度。
在一些实施例中，限位部13覆盖对颌对应位置的后牙牙冠的1/3-1/2。
在一些实施例中，限定部12和限位部13沿牙弓方向的长度占牙弓的40％-80％。
在一些实施例中，限位部13具有约束牙颌与对颌在水平方向上的移动自由度的限位结构。
在一些实施例中，限位结构与对颌牙列对应牙齿的咬合面具有摩擦匹配的结构。
在一些实施例中，限位结构为与对颌牙列对应牙齿形状凹凸匹配的结构。
在一些实施例中，限位结构为与对颌牙列对应牙齿形状匹配的咬合印记。
在一些实施例中，参考图6所示，壳状本体1的后牙区的咬合面还设有限位部13，限位部13补偿第一目标位与其对应位置的对颌牙列之间在垂直向上距离为厚度H3。其中，本申请的后牙区指5-8号牙，也就是第二前磨牙，第一恒牙，第二恒牙以及智齿。限位部13在垂直向上覆盖对颌对应位置的后牙牙冠的1/3-1/2，后牙的牙冠相较于前牙牙冠短，并且由于后牙区的口腔内的空间较为狭窄，因此，限位部13在垂直向上覆盖下颌牙冠的1/3-1/2能够保证后牙区牙齿定位情况的前提下，给医生观察牙颌的定位留有足够的观察空间。此外，壳状本体1上的限定部12和限位部13沿牙弓方向的长度占牙弓的40％-80％。限位部13同样具有约束牙颌与对颌在水平方向上的移动自由度的限位结构。限位结构与对颌牙列对应牙齿 的咬合面具有摩擦匹配的结构，即限位结构的与对颌牙列相对的表面为摩擦表面，摩擦表面的摩擦系数能够使得对颌牙列对应牙齿在接触摩擦表面时不发生相对滑动。或者，限位结构为与对颌牙列对应牙齿形状匹配的咬合印记。咬合印记为与对颌牙列对应牙齿形状凹凸匹配，使得牙颌能够精准地定位于第一目标位，不发生不期望的移动，限位结构也可以是非咬合印记的其他对颌牙列对应牙齿形状匹配凹凸匹配结构，即满足限制牙颌与对颌在水平方向上的移动自由度的其他结构，例如限位结构的舌侧面和颊侧面分别向对颌方向延伸形成覆盖对颌对应牙齿部分的牙冠的凹槽，从而实现限位部对对颌在水平方向上的移动自由度的限制。
在一些实施例中，限定部12的数量为偶数，并且所有限定部12关于牙中线对称设置。
在一些实施例中，参考图4所示，限定部12的数量为偶数，并且多个限定部12关于牙中线A-A’对称设置。此外，限位部13的数量也为偶数，同样关于牙中线对称设置。当然，在一些情况下，壳状本体1也可以在前牙区设置一个限定部12和/或两个限位部13，限定部12和限位部13之间呈间隙设置，一个限定部12关于牙中线对称设置，同样两个限位部13也关于牙中线对称设置。关于牙中线对称设置的好处在于，限位部13和/或限定部12能够均匀分配牙颌载荷，使得牙颌的定位更加精准。
在一些实施例中，相邻的限定部13之间具有邻间间隙。
在一些实施例中，邻间间隙设置在1-1号牙齿之间，或者2号牙齿的远中处和3号牙的近中处之间，或者4号牙齿的远中处和5号牙的近中处之间。
在一些实施例中，邻间间隙关于牙中线对称设置。
在一些实施例中，参考图7所示，相邻的限定部12之间具有邻间间隙。或者相邻的限定部12和相邻的限位部13之间具有邻间间隙。邻间间隙设置在1-1号牙齿之间，或者2号牙齿的远中处和3号牙的近中处之间，或者4号牙齿的远中处和5号牙的近中处之间，并且邻间间隙关于牙中线对称设置。邻间间隙的设置便于医生在手术中观察牙颌的定位情况。
在一些实施例中，壳状本体1上设有限定部12的安装台，安装台上具有第一粘接面，限定部12具有第二粘接面。第一粘接面的表面与第二粘接面的表面形状匹配，在一些实施例中，采用易于制造成工业标准件的平面，在生产过程中统一标准，便于大规模生产制造。
在一些实施例中，限定部12可通过超声波焊接的方式直接固定连接在壳状本体1的舌侧面和/或唇侧面上。降低制作成本，并且制作过程清洁无污染。
在一些实施例中，当限定部12与壳状本体1为分体结构时，壳状本体1与限定部12具有相互卡接的结构，壳状本体1上的卡接部和限定部12的卡接部配合，使得限定部12以可拆卸的方式固定在壳状本体1上，例如榫卯结构。可以通过更换限定部12的方式，使得壳状本体1在不同步骤中多次使用。
在一些实施例中，限定部12的刚度大于第一壳状1本体的刚度。
在一些实施例中，限定部12的材料的弹性模量大于壳状本体1的材料的弹性模量。
在一些实施例中，壳状本体1与限定部12为一体结构，并且，限定部12的厚度大于壳状本体1的厚度。
在一些实施例中，限定部12的左右侧面上设有加强脊。
在一些实施例中，限定部12的刚度大于壳状本体1的刚度。限定部12的材料的弹性模量大于壳状本体1的材料的弹性模量。限定部12的厚度可以略大于壳状本体1的厚度，例如，壳状本体1的厚度在0.5mm-1.0mm的范围内，限定部12的厚度在0.55mm-1.05mm的范围内。或者，限定部12为多层结构，增强限定部12的强度，从而提高限定部12的抗变形能力。多层结构至少包含靠近牙齿一侧的内层和远离牙齿一侧的外层。其中，外层材料的弹性模量可大于内层材料的弹性模量。内层材料可选用弹性模量处在从0.2Mpa到500Mpa范围内的材料，外层材料可选用弹性模量处在从0.5Mpa到600Mpa范围内的材料。作为备选或组合，外层的厚度可大于内层的厚度，内层的厚度可处在从0.05mm到0.5mm的范围内，外层的厚度可处在从0.3mm到0.7mm的范围内。或者，限定部12的左右侧面设有加强脊结构，加强脊可以为从限定部12表面的凸起或者凹入的结构，通过增加限定部12的表面曲率，进而提高限定部12的抗变形力，使得限定部12在使用的过程中不会出现变形，影响手术精度。参考图8，本申请还包括一种具有第一牙科器械和第二牙科器械的牙科器械套组，第一牙科器械的第一壳状本体1和第二牙科器械的第二壳状本体2按照顺序使用分别定位第一牙颌和第二牙颌，第二牙科器械具有与第一牙科器械形状一致的牙齿收纳腔21。第二壳状本体2同样具有第二限定部22和/或第二限位部23。正颌手术是通过将错误的上下颌骨移动到正常的位置，再重新固定至骨愈合。因此，在大多数情况下，患者的上下颌骨都需要进行移动。本申请中牙科器械套组可用于确保对上下颌骨移动到正确的目标位。例如，参考图9所示，步骤P1：根据手术计划先对患者的上颌进行移动，在下颌的位置确定不变的前提下，患者首先佩戴第一壳状本体1于上颌牙列上，以下颌作为参照物，将限定部12和/或限位部13卡在下颌牙列上，使得上颌定位于第一目标位，然后将上颌骨用钛板3进行固定，之后摘除第一壳状本体1。步骤P2：以上颌作为参照物，同样将第二壳状本体2佩戴于上颌牙列，将下颌牙列卡在第二限定部22和/或第二限位部23处，使得下颌移动到第二目标位，然后进行颌间结扎固定并将下颌骨用钛板3进行固定。第一壳状本体1和第二壳状本体2均佩戴于上颌牙列的好处在于，上颌牙列牙齿的牙冠普遍大于下颌牙列牙齿的牙冠，因此，壳状本体在佩戴在上颌牙列上的固位力更强，使得壳状本体在使用过程中，不容易脱落。
本申请还公开了一种牙科器械的设计方法和制备方法，如图10所示。
步骤101，生成数字化模型。根据医护人员或其他专业人士提供的患者的数字化上颌模型(第一初始牙颌数字模型)和数字化下颌模型(第二初始对颌数字模型)，或者获取由其他设备产生并输入的患者的数字化上颌模型和数字化下颌模型，即，并不限定患者的数字化上颌模型和数字化下颌模型的获取方式或途径等。
步骤102，数字化限定部设置。前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计限定部数字模型特征信息；其中限定部数字模型特征信息包括限定部数字模型的尺寸信息及预设位置；尺寸信息包括限定部数字模型补偿第一牙颌数字模型与限定部数字模型对应位置的第二初始对颌数字模型之间在垂直向上距离的第一数字化厚度；限定部数字模型补偿第一牙颌数字模型与限定部数字模型对应位置的第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；基于第一牙颌数字模型和限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；第一厚度和第二厚度满足数字化限定部覆盖数字化下颌模型对应位置的前牙牙冠的1/2-2/3。
步骤103，制造牙科器械。根据第一目标牙颌数字模型制造出具有容纳上颌多个牙齿的牙齿收纳腔的第一牙科器械，第一牙科器械上的限定部具有约束牙颌与对颌之间位置关系并使牙颌稳定保持在第一目标位的几何结构。
步骤103制造牙科器械可以采用增材制造。
增材制造还可称为3D打印，融合计算机辅助设计、材料加工与成型技术、以数字模型文件为基础，通过软件与数控系统将专用的金属材料、非金属材料以及医用生物材料，按照挤压、烧结、熔融、光固化、喷射等方式逐层堆积，制造出实体物品的制造技术。
步骤103制造牙科器械可以采用热压膜的方式。
首先采用增材制造的方式制造第一目标牙颌数字模型的实体模型，然后在实体模型上进行热压膜制造第一牙科器械。
本申请还公开了一种牙科器械套组的设计方法和制备方法，如图11所示。
步骤201，生成数字化模型。根据医护人员或其他专业人士提供的患者的数字化上颌模型(第一初始牙颌数字模型)和数字化下颌模型(第二初始对颌数字模型)，或者获取由其他设备产生并输入的患者的数字化上颌模型和数字化下颌模型，即，并不限定患者的数字化上颌模型和数字化下颌模型的获取方式或途径等。
步骤202，数字化限定部设置。根据手术计划获取第一目标位的第一牙颌数字模型，在第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计限定部数字模型特征信息；其中限定部数字模型特征信息包括限定部数字模型的尺寸信息及预设位置；尺寸信息包括限定部数字模型补偿第一牙颌数字模型与限定部 数字模型对应位置的第二初始对颌数字模型之间在垂直向上距离的第一数字化厚度；限定部数字模型补偿第一牙颌数字模型与限定部数字模型对应位置的第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；
基于第一牙颌数字模型和限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；
根据手术计划获取第二目标位的第二对颌数字模型，
在第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的第二限定部数字模型，具体包括设计第二限定部数字模型特征信息；其中第二限定部数字模型特征信息包括第二限定部数字模型的尺寸信息及预设位置；尺寸信息包括第二限定部数字模型补偿第一牙颌数字模型与第二限定部数字模型对应位置的第二对颌数字模型之间在垂直向上距离的第一数字化厚度；第二限定部数字模型补偿第一牙颌数字模型与第二限定部数字模型对应位置的第二对颌数字模型之间在矢状向上距离的第二数字化厚度；
基于第一牙颌数字模型和第二限定部数字模型，生成具有第二限定部数字模型的第二目标牙颌数字模型。
步骤203，制造牙科器械套组。根据第一目标牙颌数字模型制造出具有容纳上颌多个牙齿的牙齿收纳腔的第一牙科器械，第一牙科器械上的限定部具有约束牙颌与对颌之间位置关系并使牙颌稳定保持在第一目标位的几何结构；根据第二目标牙颌数字模型制造出具有容纳上颌多个牙齿的牙齿收纳腔的第二牙科器械，第二牙科器械上的限定部具有约束牙颌与对颌之间位置关系并使牙颌稳定保持在第二目标位的几何结构。
步骤203制造壳状牙科器械套组可以采用增材制造。
增材制造还可称为3D打印，融合计算机辅助设计、材料加工与成型技术、以数字模型文件为基础，通过软件与数控系统将专用的金属材料、非金属材料以及医用生物材料，按照挤压、烧结、熔融、光固化、喷射等方式逐层堆积，制造出实体物品的制造技术。
值得一提的是，本实施例中所涉及到的各模块均为逻辑模块，在实际应用中，一个逻辑单元可以是一个物理单元，也可以是一个物理单元的一部分，还可以以多个物理单元的组合实现。此外，为了突出本申请的创新部分，本实施例中并没有将与解决本申请所提出的技术问题关系不太密切的单元引入，但这并不表明本实施例中不存在其它的单元。
应当说明的是，以上实施例在不产生矛盾的情况下，均可根据需要进行自由组合以形成不同的新的实施方案，这种组合后形成的实施方案均为本申请的保护范围，为了节省申请文本的篇幅，在此不再赘述。
以上所述仅是本申请的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。
同样地，以上所述仅为本申请的具体实施例，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种用于正颌手术的牙科器械，包括：具有容纳牙颌上多个牙齿的牙齿收纳腔(11)的壳状本体(1)，所述壳状本体(1)的前牙区的舌侧面或唇侧面设有至少一个约束对颌牙列的限定部(12)，所述限定部(12)具有约束所述牙颌与对颌之间位置关系并使所述牙颌稳定保持在第一目标位的几何结构，所述几何结构具有补偿所述第一目标位与所述限定部(12)对应位置的对颌牙列之间在垂直向上距离的第一厚度(H1)；所述几何结构具有在矢状向上补偿所述第一目标位与所述限定部(12)对应位置的对颌牙列之间距离的第二厚度(H2)。
  2. 根据权利要求1所述的牙科器械，其中，所述限定部(12)覆盖所述对颌对应位置的前牙牙冠的1/2-2/3。
  3. 根据权利要求1或2所述的牙科器械，其中，所述限定部(12)在垂直向的延伸长度为1mm-2mm。
  4. 根据权利要求1-3中任一项所述的牙科器械，其中，所述限定部(12)沿牙弓方向的长度占牙弓的20％-40％。
  5. 根据权利要求1-4中任一项所述的牙科器械，其中，所述限定部(12)邻近对颌牙列的一端具有约束所述牙颌与所述对颌在矢状上的移动自由度的限定结构。
  6. 根据权利要求5所述的牙科器械，其中，所述限定结构为与对颌牙列对应牙齿形状匹配的咬合印记。
  7. 根据权利要求1-6中任一项所述的牙科器械，其中，所述壳状本体(1)的后牙区的咬合面设有限位部(13)，所述限位部(13)具有补偿所述第一目标位与其对应位置的对颌牙列之间在垂直向上距离的厚度(H3)。
  8. 根据权利要求7所述的牙科器械，其中，所述限位部(13)覆盖所述对颌对应位置的后牙牙冠的1/3-1/2。
  9. 根据权利要求7或8所述的牙科器械，其中，所述限定部(12)和所述限位部(13)沿牙弓方向的长度占牙弓的40％-80％。
  10. 根据权利要求7-9中任一项所述的牙科器械，其中，所述限位部(13)具有约束所述牙颌与所述对颌在水平方向上的移动自由度的限位结构。
  11. 根据权利要求10所述的牙科器械，其中，所述限位结构与对颌牙列对应牙齿的咬合面具有摩擦匹配的结构。
  12. 根据权利要求10所述的牙科器械，其中，所述限位结构为与对颌牙列对应牙齿形状凹凸匹配的结构。
  13. 根据权利要求12所述的牙科器械，其中，所述限位结构为与对颌牙列对应牙齿形状匹配的咬合印记。
  14. 根据权利要求1-13中任一项所述的牙科器械，其中，所述限定部(12)的数量为偶数，并且所有所述限定部(12)关于牙中线(A-A’)对称设置。
  15. 根据权利要求14所述的牙科器械，其中，相邻的所述限定部(12)之间具有邻间间隙。
  16. 根据权利要求15所述的牙科器械，其中，所述邻间间隙设置在1-1号牙齿之间，或者2号牙齿的远中处和3号牙的近中处之间，或者4号牙齿的远中处和5号牙的近中处之间。
  17. 根据权利要求15或16所述的牙科器械，其中，所述邻间间隙关于牙中线(A-A’)对称设置。
  18. 根据权利要求1至17中任一项所述的牙科器械，其中，所述壳状本体(1)与所述限定部(12)为一体结构，并且，所述限定部(12)的厚度大于所述壳状本体(1)的厚度。
  19. 根据权利要求1-18中任一项所述的牙科器械，其中，所述限定部(12)与所述壳状本体(1)为分体结构；所述限定部(12)具有第一粘接面，所述壳状本体(1)具有第二粘接面；所述第一粘接面和所述第二粘接面通过粘接的方式使所述限定部(12)固定连接在所述壳状本体(1)上。
  20. 根据权利要求1-19中任一项所述的牙科器械，其中，所述限定部(12)通过超声波焊接的方式固定连接在所述壳状本体(1)的舌侧面和/或唇侧面上。
  21. 根据权利要求1-20中任一项所述的牙科器械，其中，所述限定部(12)的刚度大于所述壳状本体(1)的刚度。
  22. 根据权利要求21所述的牙科器械，其中，所述限定部(12)的材料的弹性模量大于所述壳状本体(1)的材料的弹性模量。
  23. 根据权利要求21或22所述的牙科器械，其中，所述限定部(12)的左右侧面上设有加强脊。
  24. 一种牙科器械套组，包括第一牙科器械(1)和第二牙科器械(2)，所述第一牙科器械(1)为如权利要求1-23中任意一项所述的牙科器械，所述第二牙科器械(2)为如权利要求1-23中任意一项所述的牙科器械，所述第二牙科器械(2)具有与所述第一牙科器械(1)形状一致的牙齿收纳腔(22)。
  25. 根据权利要求24所述的牙科器械套组，其中，当牙列佩戴第一牙科器械(1)定位于第一目标位后，相同牙列佩戴所述第二牙科器械(2)将对颌牙列定位于第二目标位。
  26. 根据权利要求24或25所述的牙科器械套组，其中，所述第一牙科器械(1)和所述第二牙科器械(2)佩戴于上颌牙列上。
  27. 一种牙科器械的设计方法，包括：
    获取第一初始牙颌数字模型和第二初始对颌数字模型；
    根据手术计划获取第一目标位的第一牙颌数字模型；
    在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计所述限定部数字模型特征信息；其中所述限定部数字模型特征信息包括所述限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在垂直向上距离的第一数字化厚度；所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；
    基于所述第一牙颌数字模型和所述限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；
    利用第一目标牙颌数字模型设计制造第一牙科器械，其中第一牙科器械为如权利要求1-23中任意一项所述的牙科器械，所述第一牙科器械上的限定部具有约束牙颌与对颌之间位置关系并使所述牙颌稳定保持在第一目标位的几何结构。
  28. 一种牙科器械的制备方法，根据权利要求27所述的一种牙科器械的进行相应的牙科器械的制备，制备方法包括：热压成型的制备方法或直接3D打印的方法。
  29. 一种牙科器械套组的设计方法，包括：
    获取第一初始牙颌数字模型和第二初始对颌数字模型；
    根据手术计划获取第一目标位的第一牙颌数字模型；
    在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的限定部数字模型，具体包括设计所述限定部数字模型特征信息；其中所述限定部数字模型特征信息包括所述限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在垂直向上距离的第一数字化厚度；所述限定部数字模型补偿所述第一牙颌数字模型与所述限定部数字模型对应位置的所述第二初始对颌数字模型之间在矢状向上距离的第二数字化厚度；
    基于所述第一牙颌数字模型和所述限定部数字模型，生成具有限定部数字模型的第一目标牙颌数字模型；
    根据手术计划获取第二目标位的第二对颌数字模型，
    在所述第一牙颌数字模型的前牙区的舌侧面或唇侧面设计至少一个约束对颌牙列的第二限定部数字模型，具体包括设计所述第二限定部数字模型特征信息；其中所述第二限定部数字模型特征信息包括所述第二限定部数字模型的尺寸信息及预设位置；所述尺寸信息包括所述第二限定部数字模型补偿所述第一牙颌数字模型与所述第二限定部数字模型对应位置的所述第二对颌数字模型之间在垂直向上距离的第一数字化厚度；所述第二限定部数字模型补偿所述第一牙颌数字模型与所述第二限定部数字模型对应位置的所述第二对颌数字模型之间在矢状向上距离的第二数字化厚度；
    基于所述第一牙颌数字模型和所述第二限定部数字模型，生成具有第二限定部数字模型的第二目标牙颌数字模型；
    利用第一目标牙颌数字模型设计制造第一牙科器械，其中第一牙科器械为如权利要求1-23中任意一项所述的牙科器械；
    利用第二目标牙颌数字模型设计制造第二牙科器械，其中第二牙科器械为如权利要求1-23中任意一项所述的牙科器械；所述第二牙科器械具有与所述第一牙科器械形状一致的牙齿收纳腔。
  30. 一种牙科器械套组的制备方法，根据权利要求29所述的一种牙科器械套组的进行相应的牙科器械套组的制备，制备方法包括：热压成型的制备方法或直接3D打印的方法。
PCT/CN2023/093724 2022-05-13 2023-05-12 牙科器械、牙科器械套组及其二者的设计方法和制备方法 WO2023217254A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202221263266.1 2022-05-13
CN202210524961.7A CN117084811A (zh) 2022-05-13 2022-05-13 牙科器械、牙科器械套组及其二者的设计方法和制备方法
CN202221263266.1U CN217938413U (zh) 2022-05-13 2022-05-13 牙科器械及牙科器械套组
CN202210524961.7 2022-05-13

Publications (1)

Publication Number Publication Date
WO2023217254A1 true WO2023217254A1 (zh) 2023-11-16

Family

ID=88729736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/093724 WO2023217254A1 (zh) 2022-05-13 2023-05-12 牙科器械、牙科器械套组及其二者的设计方法和制备方法

Country Status (1)

Country Link
WO (1) WO2023217254A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150238283A1 (en) * 2014-02-21 2015-08-27 Align Technology, Inc. Treatment plan specific bite adjustment structures
CN108294838A (zh) * 2017-12-26 2018-07-20 苏州口腔医院有限公司 一种压低上前牙矫正器
CN110801290A (zh) * 2018-08-06 2020-02-18 无锡时代天使医疗器械科技有限公司 壳状牙科器械及其制作方法
CN211433405U (zh) * 2019-11-14 2020-09-08 天津市口腔医院 一种治疗颞下颌关节盘可复性前移位的再定位咬合板
CN113208752A (zh) * 2020-01-20 2021-08-06 上海阔鸿信息科技有限公司 壳状矫治器及其制作方法
CN217938413U (zh) * 2022-05-13 2022-12-02 正雅齿科科技(上海)有限公司 牙科器械及牙科器械套组

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150238283A1 (en) * 2014-02-21 2015-08-27 Align Technology, Inc. Treatment plan specific bite adjustment structures
CN108294838A (zh) * 2017-12-26 2018-07-20 苏州口腔医院有限公司 一种压低上前牙矫正器
CN110801290A (zh) * 2018-08-06 2020-02-18 无锡时代天使医疗器械科技有限公司 壳状牙科器械及其制作方法
CN211433405U (zh) * 2019-11-14 2020-09-08 天津市口腔医院 一种治疗颞下颌关节盘可复性前移位的再定位咬合板
CN113208752A (zh) * 2020-01-20 2021-08-06 上海阔鸿信息科技有限公司 壳状矫治器及其制作方法
CN217938413U (zh) * 2022-05-13 2022-12-02 正雅齿科科技(上海)有限公司 牙科器械及牙科器械套组

Similar Documents

Publication Publication Date Title
JP7463446B2 (ja) 誘導パッケージを含む歯科的解決策を作成するシステムおよびその方法
CN107080554B (zh) 颞下颌关节测量方法、牙合板制备方法
CN111497248B (zh) 一种用于下颌骨异常重定位的矫治器制备方法
CN114948287B (zh) 咬合诱导矫治器设计与制造方法及咬合诱导矫治器
CN110353833A (zh) 一种正畸间接粘接的托槽粘接技术和步骤
Roraff Arranging artificial teeth according to anatomic landmarks
TWM652478U (zh) 牙科器械及牙科器械套組
CN209884376U (zh) 一种定制式牙齿矫正系统
CN113712689A (zh) 一种定制式自锁托槽矫治器及制作方法
TWM652840U (zh) 治療口腔的矯治系統
WO2023217254A1 (zh) 牙科器械、牙科器械套组及其二者的设计方法和制备方法
CN210204955U (zh) 颊屏式隐形磁力功能矫治器
Yoon et al. Full mouth rehabilitation of a severely worn dentition using intraoral scanner and the CAD/CAM double scanning technique
KR20140004333A (ko) 고딕 아치 트레이서 및 그 제조방법 및 그를 이용한 ｃａｄ ｃａｍ 총의치 제작 방법
CN114795524A (zh) 一种口呼吸伴下颌后缩的数字化双阻板矫正器及制作方法
Mehta et al. The application of occlusion in clinical practice part 1: Essential concepts in clinical occlusion
CN117084811A (zh) 牙科器械、牙科器械套组及其二者的设计方法和制备方法
WO2024222491A1 (zh) 牙科器械及其生成方法和牙齿矫治系统
EP3927279B1 (en) Prosthetic tooth, method for manufacturing thereof, and use of the same
CN220001956U (zh) 壳状牙齿矫治器及矫治系统
CN116636940B (zh) 正畸矫治器设计方法、制造方法及正畸矫治器
CN216933529U (zh) 壳状牙科器械套组
KR102500317B1 (ko) 수직고경 측정 범용 부분 바이트가이드
CN111823595B (zh) 用于深覆合人群的个性化口内支架
Milosevic Occlusion: 3. Articulators and related instruments

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23803023

Country of ref document: EP

Kind code of ref document: A1