CN108378941B - Positioning guide device based on tooth support and manufacturing method thereof - Google Patents
Positioning guide device based on tooth support and manufacturing method thereof Download PDFInfo
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- CN108378941B CN108378941B CN201810298043.0A CN201810298043A CN108378941B CN 108378941 B CN108378941 B CN 108378941B CN 201810298043 A CN201810298043 A CN 201810298043A CN 108378941 B CN108378941 B CN 108378941B
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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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a manufacturing method of a positioning guide device based on tooth support, which comprises the following steps: designing a position of a guide tube, and designing the position of the guide tube based on 3D model data reconstructed from dental bed CT data of a patient and intraoral soft and hard tissue data; the design of the bracket type operation guide plate mainly comprises a guide tube, a tooth support, a connecting bridge and a supporting rod; digital model printing, namely slicing the generated printing data of the dental operation guide plate, and then guiding the sliced printing data into additive manufacturing equipment for printing; after the digital model is formed, fine machining is carried out on the surface of the dental operation guide plate; and (3) measuring and verifying the printing model, and ensuring that the dimension is consistent and has no prying through the plaster model fitting verification and the design data fusion comparison verification. The surgical guide plate adopted by the invention not only provides a larger operation space and a wider visual range for doctors, but also can realize flushing and cooling in the surgical process.
Description
Technical field:
the invention belongs to the technical field of oral cavity beauty and plastic, and particularly relates to a positioning and guiding device based on tooth support and a manufacturing method of the device.
The background technology is as follows:
the dental operations such as initial dental implant operation or orthodontic treatment do not have the assistance of effective instruments and equipment, the positions needing implantation or orthodontic treatment are determined in a manual visual mode purely by virtue of the feeling experience of doctors, and the risk of the operation is high. With the development of technology, doctors have developed a way to reduce the risk of surgery by precisely positioning the surgical guide.
The existing positioning modes of the dental operation guide plate mainly comprise three modes of jaw support, mucosa support and tooth support. The jaw support is used as a positioning reference and a support body of the operation guide plate to determine the position of the implant, and the mucous membrane needs to be turned over in a large range in the operation process, so that the trauma to a patient is relatively large; the mucosa support is to utilize patient's mucosa tissue as the location benchmark and the supporter of operation baffle, confirms the position of planting body, and is less to patient's wound than the mode of jaw support, but needs to solve the problem of accurate location simultaneously. The dental support is to use the residual teeth in the oral cavity as a positioning reference and a support body of the operation guide plate, determine the position of the implant according to the position and the morphological information of the residual teeth, has less operation wound compared with a jaw support mode, and has more accurate positioning compared with a mucosa support mode. For patients with residual teeth in the mouth, the use of a surgical guide based on dental support to assist the procedure is a preferred option.
The traditional dental daemon guide plate is mostly in a wrapped plastic material form, and the dental operation guide plate is required to have the characteristics of difficult deformation, difficult bending, cooling, large operation space, wide visible range and the like in the dental implantation operation implementation process. These drawbacks exist in the conventional plastic guide plate design, which directly affects the safe implementation of implantation surgery.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
The invention comprises the following steps:
the invention aims to provide a positioning guide device based on tooth support, which solves the problems in the prior art that a traditional wrapped plastic dental operation guide plate is easy to deform, bend, water-cooled, small in operation space, small in visible range and the like in the operation process.
In order to achieve the above object, the present invention provides a method for manufacturing a positioning guide device based on tooth support, which is characterized in that: the method comprises the following steps of:
s1, designing a position of a guide tube, and designing the position of the guide tube based on 3D model data reconstructed by dental bed CT data of a patient and intraoral soft and hard tissue data;
s2, designing a bracket type operation guide plate, wherein the operation guide plate mainly comprises a guide pipe, a tooth support, a connecting bridge and a supporting rod;
s3, printing a digital model, slicing the generated printing data of the dental operation guide plate, and then guiding the sliced printing data into additive manufacturing equipment for printing;
s4, after the digital model is formed, a post-treatment process is required to be involved: the surface of the dental operation guide plate is processed finely;
s5, measuring and verifying the printing model, and ensuring that the dimension is consistent and has no prying through gypsum model fitting verification and design data fusion comparison verification.
Additive manufacturing (Additive Manufacturing, AM) is commonly called 3D printing, and is rapidly developed in application of various industries, and the additive manufacturing method is characterized by accurate manufacturing of complex products, capability of personally designing products for diversity, high forming speed and the like. The metal additive manufacturing (3D printing) is a manufacturing technology for manufacturing a solid object by integrating computer aided design, material processing and forming manufacturing technology and stacking special metal materials layer by layer in a melting mode by using software and a numerical control system based on a digital model file. Aiming at the dental surgery, the computer aided design (Computer Aided Design, CAD) surgical guide plate utilizes three-dimensional reconstruction software to measure the conditions of bone density of the patient's dental bed, height and width of the alveolar bone, and the like in detail, so that important nerves and blood vessels can be avoided in the surgery, and the safety of the surgery is greatly improved; the surgical guide plate is very suitable for an additive manufacturing mode due to the characteristics of high precision requirement, strong personalized customization requirement of products and the like.
The technical scheme of the invention is further defined as follows:
preferably, in the above technical solution, each step is specifically:
s1, a doctor and a designer design a guide tube position based on 3D model data reconstructed by dental bed CT data of a patient and intraoral soft and hard tissue data.
Detailed description:
taking planting as an example, the direction and position setting of the planting guide tube requires the following factors to be concerned:
s1.1, avoiding key parts such as dental nerve meridian, maxillary sinus, nasal cavity and the like to be considered;
s1.2, considering the distance between the implant nail and the edge of the alveolar bone, the distance between the implant nail and the distance between the gum and the alveolar bone;
s1.3, whether a special treatment scheme exists in the affected part or not needs to be considered;
s1.4, the length of the implant nail, the bone drill data for operation, the 3D model data fused with CT data and the like need to be considered.
S2, designing a bracket type operation guide plate: the operation guide plate is composed of a guide tube, a tooth support, a connecting bridge and a support rod.
Detailed description:
s2.1, designing a guide tube: based on the information of the guide tube, view selection, concave filling and wax trimming are carried out on the intraoral soft and hard tissue data in software.
The diameter of the guide pipe can be set individually according to the actual operation tool, and the outer diameter of the guide pipe is generally larger than the inner diameter of the guide pipe by more than 1 and mm, so that the strength of the operation guide plate can be ensured.
Position and angle:
dental implant surgery: the position, angle and depth information of the digitally designed implant are related to the preoperative; orthodontic treatment: the position and angle of the planting anchorage are related to the depth information;
s2.2, tooth support design based on tooth morphology, comprising a lantern ring, a clamping ring and a support plate design: wherein the collar and the support plate act similarly, through which teeth can exert forces in the occlusal direction on the surgical guide, requiring a dispersed distribution over the remaining crowns of the patient. The clasp has special function, and the teeth of the clasp can provide force on the operation guide plate in the opposite direction of occlusion.
The lantern ring structure is characterized in that: the anastomotic lantern ring which is mainly manufactured by the side surface information of the tooth ring can be used for observing whether the lantern ring is anastomosed with the teeth or not through the annular hole;
the mechanical advantage is that: it is characterized by high anastomosis degree, strong stability, great force of the teeth in the occlusion direction to the operation guide plate, but also provides a force parallel to the plane of the gum;
design principle: the posterior teeth with relatively large occlusal surfaces generally have a collar structure, and the occlusal surfaces of the top portions of the collar structure are required to be exposed to examine the tightness.
The snap ring has the structural characteristics that: the semi-open clasp structure is designed mainly by means of the inverted concave position of the teeth and the surface information of the teeth;
the mechanical advantage is that: the tooth-shaped elastic force-retaining device is characterized by having a certain elastic allowance and strong retention capability, and being capable of providing force for the surgical guide plate in the opposite direction of occlusion and providing force parallel to the plane of the gum;
design principle: teeth have a significantly inverted concave configuration to allow for the selective use of such a configuration.
The structural characteristics of the support plate are as follows: the support plate based on the tooth morphology is mainly designed into a half-cutting sleeve type support plate structure by means of tooth tangent plane and annular side surface information;
the mechanical advantage is that: the positioning degree of the bracket type implantation operation guide plate can be visually observed, and displacement errors in a plane parallel to the dental bed are effectively prevented;
the teeth can provide a great occlusal force to the surgical guide plate and provide a force parallel to the plane of the gums;
design principle: the anterior teeth with smaller occlusal surfaces generally select a supporting plate structure, and part of occlusal surfaces need to be exposed to check the tightness;
three structural selection descriptions:
mechanical characteristic principle of structure: the stress balance and the moment balance of the operation guide plate are required to be ensured during operation:
in operation, the bracket is stressed: the stent is subject to the force of a doctor during nailing of the guide tube, and the force is usually in the opposite direction of occlusion;
occlusion direction: forces in the opposite direction to the bite exist during surgery;
parallel to the plane of the gums: if the guide plate and the occlusal direction form an included angle, the guide plate is stressed in a direction parallel to the plane of the dental bed;
force balance and moment balance: general conditions: if the acting force direction passes through the convex polygon formed by the teeth and the contact points of the operation guide plate in the operation process of a doctor, the stress balance and moment balance conditions can be automatically met without designing a snap ring structure.
Special cases: if the direction of the operation acting force of a doctor cannot pass through the convex polygon formed by the teeth and the contact points of the operation guide plate, the clasp structure must be designed to ensure the stress balance and the moment balance of the operation guide plate.
The complete implantation operation guide plate is formed by combining the connecting bridge bodies.
The design purpose of the connecting bridge body is as follows: the guide tube is connected with a bridge body based on the combination of a lantern ring, a clamping ring and a supporting plate of the tooth shape.
Design principle: besides the connecting bridges on the two sides of the guide tube, the connecting bridges on other parts need to be attached to the inner wall of the teeth as much as possible, so that a doctor can have a good operation view.
And (3) engraving, repairing and adding supporting rods (optional) to the combination of the lantern ring, the clamping ring and the supporting plate.
The bracing piece can effectively reduce the deformation of 3D in-process of printing.
The carving repair ensures that the thinnest place of the operation guide plate reaches 1.5 and mm, and ensures the strength of the operation guide plate.
S3, a digital model printing process: and slicing the generated printing data of the dental operation guide plate, and then guiding the sliced printing data into additive manufacturing equipment for printing.
Detailed description:
and (3) model placement: before slicing, the contact surface between the operation guide plate and the teeth needs to be ensured to be not a hanging surface as far as possible, namely the contact surface is ensured to be upwards placed as far as possible.
Printing powder material selection: printing required powder, purchasing denture raw materials approved by food and drug administration, and considering material components, particle size, chemical and physical properties, material humidity, biocompatibility, physical and mechanical properties.
S4, after the digital model is formed, a post-treatment process is needed: heat treatment, support removal, surface gold turning, polishing, sand blasting, and the like.
Detailed description:
selecting a proper heat treatment scheme according to the material, and removing the support after heat treatment;
removing the connecting rod if the connecting rod affects the surgical procedure; if the connecting rod does not affect the surgical procedure, it may not be removed;
the polishing tool is required to ensure that the surface roughness Ra of the inner diameter of the guide tube is less than or equal to 2 microns, so that the scattering of the guide plate surface material under the action of high-speed medical equipment in the operation process can be reduced.
S5, measurement verification of a printing model:
and (3) carrying out trial wearing verification on the gypsum model: the manufactured dental bracket type surgical guide plate is assembled on a plaster dental cast with the oral cavity data of a patient, and the requirements of complete anastomosis and no prying are met;
and (3) designing data fusion comparison and inspection: on the basis of the simple verification, the measuring rod is inserted into the guide tube, angle and position information of an operation plan is obtained by means of the scanner, and fitting verification of design data and physical data is carried out under the computer aided design (Computer Aided Design, CAD).
Pre-operative examination: before operation, the patient tries to wear the operation guide plate, which needs to meet the requirements of complete anastomosis and no prying.
A positioning guide device based on tooth support comprises a guide tube, a tooth support and a connecting bridge;
a guide tube for indicating the position of the teeth to be planted, the outer diameter of the guide tube being greater than the inner diameter of the guide tube by more than 1 and mm;
the tooth support comprises a lantern ring and a supporting plate which are connected with each other through a connecting bridge body:
the lantern ring is mainly an anastomotic lantern ring manufactured by means of tooth ring side surface information, and an opening of the lantern ring is circumferentially sleeved on the side wall of a tooth;
a support plate mounted on the end of the tooth based on a flat shape of the end of the tooth, the length of the support plate being smaller than the length of the end of the mounted tooth;
the connecting bridge connects the guide tube, the lantern ring and the supporting plate into a complete operation guide plate; the connecting bridge at other parts needs to be attached to the inner wall of the teeth as much as possible except the connecting bridge at the two sides of the guide tube.
The technical scheme is further defined as follows:
preferably, in the above technical scheme, the surgical guide plate further comprises a clamping ring, wherein the clamping ring is of a semi-open clamping ring structure, the clamping ring is clamped at a narrow part of the tooth inverted concave structure, and force in a reverse direction is provided for the surgical guide plate through elastic allowance.
Preferably, in the above technical solution, the opening direction of the clasp faces the outer side of the tooth.
Preferably, in the above technical scheme, the device further comprises a supporting rod, wherein the supporting rod is supported between any two of the guide tube, the lantern ring, the supporting plate and the clamping ring.
Compared with the prior art, the invention has the following beneficial effects:
the metal skeleton type dental operation guide plate produced by the method not only is not easy to deform and bend and the like, but also can realize flushing and cooling in the operation process, compared with the traditional wrap-type design, the structural design of the operation guide plate adopted by the method in the form of the invention not only provides a larger operation space and a wider visual range for doctors.
Description of the drawings:
FIG. 1 is a surgical guide;
FIG. 2 is a schematic view of a surgical guide assembled to a tooth;
fig. 3 is a schematic illustration of orthodontic treatment;
FIG. 4 is a cross-sectional view of a collar;
FIG. 5 is a cross-sectional view of a snap ring;
FIG. 6 is a cross-sectional view of a support plate;
FIG. 7 is a schematic diagram of force and moment balancing;
fig. 8 shows a measuring rod and a guide tube.
In the figure: the device comprises a sleeve ring 1, a clamping ring 2, a supporting plate 3, a guide tube 4, a supporting rod 5, a connecting bridge 6, a soft and hard tissue data model in a mouth 7 and a measuring rod 8.
The specific embodiment is as follows:
the following detailed description of the embodiments of the invention is, however, to be understood that the invention is not limited to the embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising" or the like will be understood to include the stated element or component without excluding other elements or components.
The dental operation guide plate manufactured by the method is suitable for dental operations such as dental implantation operation, orthodontic treatment and the like. Shown in fig. 1-2.
In order to achieve the above purpose, the invention has the following technical scheme:
the method for manufacturing the positioning guide device based on tooth support comprises the following steps:
(1) The doctor and designer design the guide tube position based on the 3D model data reconstructed from the patient's gum CT data and the intraoral soft and hard tissue data.
Detailed description:
taking planting as an example, the direction and position setting of the planting guide tube requires the following factors to be concerned:
1, key parts such as the dental nerve meridian, the maxillary sinus, the nasal cavity and the like are avoided to be considered.
2, the distance between the implant nail and the edge of the alveolar bone, the distance between the implant nail and the implant nail, and the spacing between the gingiva and the alveolar bone are considered.
3, whether a special treatment scheme exists at the affected part or not.
4, the length of the implant nail, the bone drill data for operation, the 3D model data fused with CT data and the like need to be considered.
(2) Designing a bracket type operation guide plate: the surgical guide is shown in fig. 1 and is supported by a guide tube 4, a dental support, a connecting bridge 6 and a support bar 5.
Detailed description:
a, designing a guide tube: based on the information of the guide tube, view selection, concave filling and wax trimming are carried out on the intraoral soft and hard tissue data in software.
Guide tube
The pipe diameter can be set individually according to the actual operation tool, and the outer diameter of the pipe is generally larger than the inner diameter of the pipe by more than 1 and mm, so that the strength of the operation guide plate can be ensured.
Position and angle:
dental implant surgery: related to the position, angle and depth information of the digitally designed implant prior to surgery [ fig. 2 ]
Orthodontic treatment: the position, angle and depth information of the planting anchorage are related [ fig. 3 ]
b tooth support design based on tooth morphology, including lantern ring, snap ring, backup pad design: wherein the collar and the support plate act similarly, through which teeth can exert forces in the occlusal direction on the surgical guide, requiring a dispersed distribution over the remaining crowns. The clasp has special function, and the teeth of the clasp can provide force on the operation guide plate in the opposite direction of occlusion.
A collar: [ FIG. 4 ]
The structural characteristics are as follows: the anastomotic lantern ring mainly manufactured by the side surface information of the tooth ring can observe whether the lantern ring is anastomosed with the teeth precisely or not through the annular hole
The mechanical advantage is that: it features high degree of anastomosis, high stability, and the teeth can provide great force to the operation guide plate in occlusion direction and force parallel to the plane of tooth bed
Design principle: the posterior teeth with relatively large occlusal surfaces generally have a collar structure, and the occlusal surfaces at the top of the exposed portions are required to be inspected for adhesion
Clasp: [ FIG. 5 ]
The structural characteristics are as follows: the semi-open clasp structure is designed mainly by means of the inverted concave position of the teeth and the surface information of the teeth.
The mechanical advantage is that: the tooth-shaped elastic force-retaining device is characterized by having a certain elastic allowance and strong retention capability, and being capable of providing force for the surgical guide plate in a reverse direction of occlusion and providing force parallel to the plane of the gum.
Design principle: teeth have a significantly inverted concave configuration to allow for the selective use of such a configuration.
A supporting plate: [ FIG. 6 ]
The structural characteristics are as follows: the support plate based on the tooth morphology is mainly designed into a half-cutting sleeve type support plate structure by means of tooth tangential planes and annular side surface information.
The mechanical advantage is that:
the positioning degree of the bracket type implantation operation guide plate can be visually observed, and displacement errors in the plane parallel to the dental beds can be effectively prevented.
The teeth can provide a significant occlusal force to the surgical guide and provide a force parallel to the plane of the gums.
Design principle: the anterior teeth with relatively small occlusal surfaces generally have a collar structure, and it is necessary to expose a portion of the occlusal surfaces to examine the tightness.
Three structural selection descriptions:
mechanical characteristics of the structure:
principle: the stress balance and the moment balance of the operation guide plate are required to be ensured during operation:
in operation, the bracket is stressed: the stent is subject to the force of a doctor during nailing of the guide tube, and the force is usually in the opposite direction of occlusion;
occlusion direction: forces in the opposite direction to the bite exist during surgery;
parallel to the plane of the gums: if the guide plate and the occlusal direction form an included angle, the guide plate is stressed in a direction parallel to the plane of the dental bed;
force balance and moment balance: [ FIG. 7 ]
General conditions: if the acting force direction passes through the convex polygon formed by the teeth and the contact points of the operation guide plate in the operation process of a doctor, the stress balance and moment balance conditions can be automatically met without designing a snap ring structure. In the schematic diagram of fig. 7, if the intersection point a of the acting force direction and the plane where the convex polygon is located in the convex polygon, the stress balance and moment balance conditions are satisfied.
Special cases: if the direction of the operation acting force of a doctor cannot pass through the convex polygon formed by the teeth and the contact points of the operation guide plate, the clasp structure must be designed to ensure the stress balance and the moment balance of the operation guide plate. The un-recommended error setting is shown in figure 3, the moment is unbalanced in the operation, and the doctor is required to press by hand in the experimental process to ensure the moment balance. In the diagram of fig. 8, if the intersection point B of the direction of the acting force and the plane of the convex polygon is located outside the convex polygon, the force balance and moment balance conditions are not satisfied, and tilting occurs. ' s of
c, combining the implant operation guide plates through the connecting bridge bodies to form the complete implant operation guide plate.
Connection bridge body purpose: the guide tube is connected with a bridge body based on the combination of a lantern ring, a clamping ring and a supporting plate of the tooth shape.
Design principle: besides the connecting bridges on the two sides of the guide tube, the connecting bridges on other parts need to be attached to the inner wall of the teeth as much as possible, so that a doctor can have a good operation view.
And D, engraving, repairing and adding supporting rods (optional) to the combination of the lantern ring, the clamping ring and the supporting plate, wherein the supporting rods can effectively reduce deformation in the 3D printing process.
The carving repair ensures that the thinnest place of the operation guide plate reaches 1.5 and mm, and ensures the strength of the operation guide plate.
(3) Digital model printing process: and slicing the generated printing data of the dental operation guide plate, and then guiding the sliced printing data into additive manufacturing equipment for printing.
Detailed description:
and (3) model placement: before slicing, the contact surface between the operation guide plate and the teeth is required to be ensured to be as non-hanging surface as possible, namely the contact surface is ensured to be upwards arranged as much as possible
Printing powder material selection: the needed metal powder for printing should be purchased, denture raw materials approved by food and drug administration and registered or recorded should be fully considered, such as material components, particle size, chemical and physical characteristics, material humidity, biocompatibility, physical and mechanical properties and the like.
(4) The digital model is formed by a post-treatment process: heat treatment, support removal, surface gold turning, polishing, sand blasting, and the like.
Detailed description:
the support is removed after heat treatment, depending on the material selection of the appropriate heat treatment scheme.
Removing the connecting rod if the connecting rod affects the surgical procedure; the connecting rod may not be removed if it does not affect the surgical procedure.
The polishing tool is required to ensure that the surface roughness Ra of the inner diameter of the guide tube is less than or equal to 2 microns, so that the scattering of the guide plate surface material under the action of high-speed medical equipment in the operation process can be reduced.
(5) Measurement verification of the print model:
and (3) carrying out trial wearing verification on the gypsum model: the manufactured dental bracket type surgical guide plate is assembled on a plaster dental cast with the oral cavity data of a patient, and the requirements of complete anastomosis and no prying are met;
and (3) designing data fusion comparison and inspection: on the basis of the simple verification, a measuring rod is inserted into a guide tube, angle and position information of an operation plan is obtained by means of a scanner, and fitting verification of design data and physical data is carried out under the computer aided design (Computer Aided Design, CAD) (figure 8).
Pre-operative examination: before operation, the patient tries to wear the operation guide plate, which needs to meet the requirements of complete anastomosis and no prying;
the following describes the technical scheme with specific data:
the doctor and designer design the implant guide tube position based on the 3D model data reconstructed from the patient's gum CT data and the intraoral soft and hard tissue data.
The outer diameter of the bone drill for surgery is 2.3 mm, the inner diameter of the designed guide tube 4 is 2.25 mm, and the outer diameter is 3.2 mm.
The positioning and guiding device comprises a guiding tube 4, a tooth support, a connecting bridge 6, a clamping ring 2 and a supporting rod 5
A guide tube for indicating the position of the teeth to be planted, the outer diameter of the guide tube being greater than the inner diameter of the guide tube by more than 1 and mm;
the dental brace comprises a collar 1 and a support plate 3 interconnected by a connecting bridge 6:
the lantern ring 1 is mainly an anastomotic lantern ring manufactured by means of tooth ring side surface information, and an opening of the lantern ring 1 is circumferentially sleeved on the side wall of a tooth;
a support plate 3 mounted on the end of the tooth based on the flat shape of the end of the tooth, the length of the support plate being smaller than the length of the mounted end of the tooth;
the snap ring 2 is of a semi-open snap ring structure, and the opening direction of the snap ring 2 faces the outer side of the teeth. The clamping ring 2 is clamped at the narrow part of the tooth inverted concave structure, and provides force for the operation guide plate in the opposite direction of occlusion through the elastic allowance.
The connecting bridge 6 connects the guide tube 4, the lantern ring 1, the supporting plate 3 and the clamping ring 2 into a complete operation guide plate; the connecting bridges 6 at other positions, except the connecting bridges 6 at both sides of the guide tube, need to be attached to the inner wall of the teeth as much as possible.
The supporting rod 5 is supported between any two of the guide tube 4, the lantern ring 1, the supporting plate 3 and the clamping ring 2.
As shown in fig. 2 and 5, the tooth support shape selected for 2 teeth having a remarkable undercut is the clasp ring 2, the tooth support shape selected for 2 posterior teeth having a large occlusal surface is the collar 1, and the tooth support shape selected for 3 anterior teeth having a small occlusal surface is the support plate 3. It is easy to see that the collar 1 and the support plate 3, which serve as support, are distributed in a dispersed manner, and the axial direction of the guide tube 4, which is stressed during the operation, passes through the inside of the convex polygon formed by all the tooth support points, so that prying is not caused. And in addition, 2 clamping rings 2 are also arranged, so that even if the stress of the guide tube deviates from the axis in the operation process, the force in the opposite direction to the occlusion can be provided, and the safe operation is ensured. The connecting bridge body is attached to the inner wall of the teeth, so that a doctor is guaranteed to have a good operation field. The carving repair ensures that the thinnest place of the operation guide plate reaches 1.5 mm. The support rod 5 is added, so that the printing process can be ensured not to be deformed.
Before the 3D software is sliced, the contact surface of the surgical guide plate model and the teeth are upwards placed for supporting and adding.
The denture raw material Co-Cr alloy powder approved by the food and drug supervision and management department for registration or recording is selected for the printing of the operation guide plate model.
And selecting a proper heat treatment scheme according to the phase diagram characteristics of the Co-Cr alloy to perform stress relief annealing, and removing the support and the connecting rod after heat treatment.
The surface roughness Ra of the inner diameter of the guide tube 4 is ensured to be less than or equal to 2 micrometers simply by a polishing tool.
And sand blasting treatment is carried out, so that the roughness of the whole surgical guide plate is reduced.
The manufactured dental bracket type surgical guide plate is assembled on a plaster dental cast with the oral cavity data of a patient, so that the complete anastomosis and no prying are realized.
The measuring rod 8 is inserted into the guide tube 4, the angle and position information of the operation plan is obtained by means of a scanner, and the fitting verification of the design data and the real data is carried out under the computer aided design (Computer Aided Design, CAD), so that the error is less than 0.05 mm.
Before operation, the doctor lets the patient try to wear the implantation operation guide plate, thereby meeting the requirements of complete anastomosis and no prying.
Conventional sterilization of the implant surgical guide is performed prior to surgery.
According to the preoperative plan, implant implantation is performed with the aid of an implant guide.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A manufacturing method of a positioning guide device based on tooth support is characterized by comprising the following steps: the method comprises the following steps of:
s1, designing a position of a guide tube, and designing the position of the guide tube based on 3D model data reconstructed by dental bed CT data of a patient and intraoral soft and hard tissue data;
s2, designing a bracket type operation guide plate, wherein the operation guide plate mainly comprises a guide pipe, a tooth support, a connecting bridge and a supporting rod;
s3, printing a digital model, slicing the generated printing data of the dental operation guide plate, and then guiding the sliced printing data into additive manufacturing equipment for printing;
s4, after the digital model is formed, a post-treatment process is required to be involved: the surface of the dental operation guide plate is processed finely;
s5, measuring and verifying a printing model, and ensuring that the dimension is consistent and has no prying through gypsum model trial-wear verification and design data fusion comparison verification; the step S2 specifically comprises the following steps:
respectively designing a guide tube, a tooth support, a connecting bridge and a supporting rod according to the data of the S1;
a guide tube having an outer diameter larger than the inner diameter of the tube by 1 to mm;
the dental brace comprises a collar and a support plate which are connected with each other by a connecting bridge:
the lantern ring is mainly an anastomotic lantern ring manufactured by means of tooth ring side surface information, and an opening of the lantern ring is circumferentially sleeved on the side wall of a tooth;
a support plate mounted on the end of the tooth based on a flat shape of the end of the tooth, the length of the support plate being smaller than the length of the end of the mounted tooth;
the connecting bridge connects the guide tube, the lantern ring and the supporting plate into a complete operation guide plate; in addition to the bridge on both sides of the guide tube, the bridge on the other part needs to be attached to the inner wall of the tooth.
2. The method of manufacturing a tooth support based positioning guide according to claim 1, wherein:
the step S1 specifically comprises the following steps:
implantation surgery the guide tube positions were designed according to the following data: the 3D model data and intraoral soft and hard tissue data are specifically dental nerve meridian, maxillary sinus and nasal cavity position data, distance data between a planting nail and the edge of an alveolar bone, distance data between the planting nail and the planting nail, spacing data between a gum and the alveolar bone, planting nail length, bone drill data for operation and 3D model data fused with CT data;
the following data for orthodontic operation were used to design the guide tube position: the 3D model data and intraoral soft and hard tissue data are specifically dental nerve meridian, maxillary sinus and nasal cavity position data, planting anchorage position, angle and depth information data, spacing data of gingiva and alveolar bone, planting anchorage length, bone drill data for operation and 3D model data fused with CT data.
3. The method of manufacturing a tooth support based positioning guide according to claim 1, wherein: still include the snap ring, the snap ring is half open type snap ring structure, and the card is on the tooth that has the undercut structure, provides the force of interlock opposite direction to the operation baffle through elasticity surplus.
4. The method of manufacturing a tooth support based positioning guide according to claim 1, wherein: the step S3 specifically comprises the following steps:
and (3) model placement: before slicing, the contact surface of the operation guide plate and teeth is required to be ensured not to be a hanging surface, namely, the contact surface is ensured to be upwards placed;
printing powder material selection: printing the required powder, the denture raw material approved by the food and drug administration for registration or record should be purchased.
5. The method of manufacturing a tooth support based positioning guide according to claim 1, wherein: the step S4 specifically comprises the following steps:
selecting a proper heat treatment scheme according to the material, and removing the support after heat treatment;
removing the connecting rod if the connecting rod affects the surgical procedure; if the connecting rod does not affect the surgical procedure, it may not be removed;
the polishing tool ensures that the surface roughness Ra of the inner diameter of the guide tube is less than or equal to 2 microns.
6. The method of manufacturing a tooth support based positioning guide according to claim 1, wherein: the step S4 specifically comprises the following steps:
and (3) carrying out trial wearing verification on the gypsum model: the manufactured dental bracket type surgical guide plate is assembled on a plaster dental cast with the oral cavity data of a patient, and the requirements of complete anastomosis and no prying are met;
and (3) designing data fusion comparison and inspection: on the basis of the simple verification, a measuring rod is inserted into a guide tube, angle and position information of an operation plan is obtained by means of a scanner, and fitting verification of design data and physical data is carried out under CAD (computer aided design) Computer Aided Design;
pre-operative examination: before operation, the patient tries to wear the operation guide plate, which needs to meet the requirements of complete anastomosis and no prying.
7. A tooth support-based positioning guide device, characterized in that: comprises a guide tube, a tooth support and a connecting bridge;
the guide tube is used for indicating the position where teeth are to be planted, and the outer diameter of the guide tube is larger than the inner diameter of the guide tube by more than 1 mm;
the dental brace comprises a collar and a support plate which are connected with each other by a connecting bridge:
the lantern ring is mainly an anastomotic lantern ring manufactured by means of tooth ring side surface information, and an opening of the lantern ring is circumferentially sleeved on the side wall of a tooth;
a support plate mounted on the end of the tooth based on a flat shape of the end of the tooth, the length of the support plate being smaller than the length of the end of the mounted tooth;
the connecting bridge connects the guide tube, the lantern ring and the supporting plate into a complete operation guide plate; in addition to the bridge on both sides of the guide tube, the bridge on the other part needs to be attached to the inner wall of the tooth.
8. The tooth support based positioning guide as set forth in claim 7, wherein: still include the snap ring, the snap ring is half open type snap ring structure, and the snap ring card is in the narrower portion of tooth indent structure, provides the force of interlock opposite direction to the operation baffle through elasticity surplus.
9. The tooth support based positioning guide of claim 8, wherein: the opening direction of the snap ring faces the outer side of the teeth.
10. Tooth-support-based positioning guide as claimed in claim 8 or 9, characterized in that: the support rod is supported between any two of the guide tube, the lantern ring, the support plate and the clamping ring.
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| CN201810298043.0A CN108378941B (en) | 2018-04-04 | 2018-04-04 | Positioning guide device based on tooth support and manufacturing method thereof |
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| CN109717971B (en) * | 2019-03-11 | 2020-11-27 | 四川大学 | Bone-grafting guide plate and manufacturing method thereof |
| CN109998709B (en) * | 2019-04-15 | 2021-05-18 | 杭州美齐科技有限公司 | Tooth inverted-concave automatic filling printing method based on tooth characteristic points |
| CN110584811B (en) * | 2019-09-24 | 2022-01-04 | 成都登特牙科技术开发有限公司 | Dental implant abutment locator and 3D printing manufacturing method and mold taking method thereof |
| WO2021122013A1 (en) * | 2019-12-18 | 2021-06-24 | Vita Zahnfabrik H. Rauter Gmbh & Co. Kg | Method for defining at least one boundary surface inside an artificial tooth element |
| CN112386344B (en) * | 2020-10-15 | 2022-10-21 | 儒蓉(成都)医疗科技有限公司 | Elastic veneered bridge and preparation method thereof |
| CN112716631B (en) * | 2021-01-08 | 2021-10-08 | 四川大学 | Manufacturing method of digital small-size stacking type high-retention tooth implantation operation guide plate |
| CN115869067B (en) * | 2023-03-08 | 2023-06-06 | 北京大学口腔医学院 | Guiding device, assembly and preparation method for dental surgery |
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