CN110584811B - Dental implant abutment locator and 3D printing manufacturing method and mold taking method thereof - Google Patents
Dental implant abutment locator and 3D printing manufacturing method and mold taking method thereof Download PDFInfo
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- CN110584811B CN110584811B CN201910905660.7A CN201910905660A CN110584811B CN 110584811 B CN110584811 B CN 110584811B CN 201910905660 A CN201910905660 A CN 201910905660A CN 110584811 B CN110584811 B CN 110584811B
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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
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0037—Details of the shape
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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
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
- A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
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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
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
- A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/0006—Impression trays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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Abstract
The invention relates to the field of oral medical instruments and discloses a dental implant abutment locator and a 3D printing manufacturing method and a model taking method thereof. The dental implant abutment locator comprises an abutment body, a restoring body and a connecting body which are connected into a whole, wherein the gum end of the abutment body is provided with an abutment locating cavity matched with a dental implant abutment, the abutment locating cavity is communicated with an abutment screw hole, and the abutment screw hole extends and penetrates through the abutment body
A cutting end, the restoration body is provided with a covering and adapting abutment
The face or/and the cut end are/is structured, and gaps are reserved between the aligning body and the adjacent teeth and between the aligning body and the gum. The invention relates to a restoration body and an abutment of a dental implant abutment locator
The surfaces or/and the cutting ends are matched to realize positioning, and a certain gap is reserved between the positioning body and the adjacent teeth, so that the positioning body can smoothly and accurately position without being extruded, the positioning and mounting accuracy of the dental implant abutment is ensured, and a good foundation is provided for subsequent treatment and rehabilitation.
Description
Technical Field
The invention relates to the field of oral medical instruments, in particular to a dental implant abutment locator and a 3D printing manufacturing method and a model taking method thereof.
Background
The teeth are the organs of human body for chewing food and are also the hardest organs of human body, and the human teeth are mainly divided into incisors, cuspids and molars, and the outer end parts of the molars are called as
End face of which is
The outer ends of the incisors and cuspids are called incisors. At present, the dental implant technology is the most effective dental restoration means, and as the dental implant technology becomes mature, the dental implant technology is more and more widely applied to the field of dental restoration. In the aspect of preparing an implant restoration impression, in order to select suitable different models of abutments outside the mouth according to actual conditions and adjust the abutments outside the mouth to obtain a common in-place path of a plurality of dental implant abutments, a more ideal restoration effect and the like, the implant horizontal impression is the current clinical main choice. The implant level impression mode allows the technician to select and adjust a proper abutment outside the mouth according to actual needs, and then make a prosthesis (including a temporary prosthesis and a permanent prosthesis) on the abutment. However, if the designed prosthesis cannot be clinically positioned at the angle designed by the technician when the dental implant abutment is positioned, the designed prosthesis cannot be positioned according to the preset design, and the whole repair cannot be completed. Therefore, the accurate transfer of the abutment positioning angle designed by the technician into the mouth is one of the keys for ensuring the success of the repair. Currently, the mode of manufacturing a dental implant abutment locator by using self-setting resin on a plaster model is mostly adopted, the traditional mode is time-consuming, and manual errors exist during manual operation.
The patent application with publication number CN108309476A discloses a method for implanting a dental implant, which uses a positioner to position a permanent abutment, thereby realizing accurate installation of the permanent abutment. The bottom of the positioner is provided with a shape matched with the permanent abutment and the gum of the patient, the side edge of the positioner is provided with a shape matched with the teeth on two sides of the implant, and the positioner is provided with a mounting hole aligned with the counter bore of the permanent abutment. The use method of the locator is as follows: after the healing abutment is detached, the positioner is matched with the permanent abutment and then placed at the implant of a patient, so that the positioner is matched with teeth and gum at two sides of the implant, the fixing bolt of the permanent abutment is installed from the mounting hole, and the permanent abutment is fixed on the implant. When the positioner is used, the permanent abutment is placed in the positioner and is matched with the positioner, then the positioner together with the permanent abutment is placed at the planting position of a patient, and the positioner is in lap joint with teeth on two sides of the planting position, so that the permanent abutment can be accurately placed at the correct position through the bidirectional positioning effect of the positioner; and then the fixing bolt is inserted into the counter bore from the mounting hole, the fixing bolt is screwed down from the mounting hole by using a tool to fix the permanent base station and the implant, the permanent base station cannot rotate relative to the implant during the fixing process through the limitation of the positioner, and the effect of accurately positioning and mounting the position of the permanent base station is achieved.
The base positioner disclosed in the above patent document can achieve positioning and mounting of the base well, but still has some problems. The abutment locator mainly depends on two aspects to reset of locator and accomplishes, and one is locator bottom and patient's gum looks adaptation, and its second is locator both sides limit and the side looks adaptation of both sides tooth. The gum of the human body is a part of the oral mucosa, the gum is not suitable as a resetting reference, the side surfaces of the teeth are provided with irregular cambered surfaces, and the positioner is required to be squeezed between the two teeth for installation, so that the installation is difficult, the positioner is easy to be installed in place, and the resetting precision of the positioner is difficult to ensure.
Disclosure of Invention
The invention aims to provide a dental implant abutment positioner with higher positioning accuracy, and also provides a 3D printing manufacturing method and a method for taking a model by using the same.
The invention discloses a dental implant abutment locator, which comprises an abutment body and a counter body which are connected into a wholeThe tooth implant comprises a bit body and a connector, wherein a gum end of the bit body is provided with an abutment positioning cavity matched with a dental implant abutment, the abutment positioning cavity is communicated with an abutment screw hole, and the abutment screw hole extends and penetrates through the bit body
A cutting end, the restoration body is provided with a covering and adapting abutment
The face or/and the cut end are/is structured, and gaps are reserved between the aligning body and the adjacent teeth and between the aligning body and the gum.
Preferably, the dental implant abutment locator further comprises a clamping body, the clamping body being located at the abutment body
The screw hole of the abutment extends and penetrates through the clamping body, and the restoring body is connected to the two sides of the clamping body through the connecting body.
Preferably, the dental implant abutment locator comprises at least two aligning bodies, adjacent aligning bodies are connected through a connecting body, and the connecting body between the adjacent aligning bodies is used as a clamping body.
Preferably, the length of the clamping body is 4-8mm, the height of the clamping body is 2-4mm, and the width of the clamping body is 3-7 mm; the width of the connector is 3-7mm, and the thickness is 2-4 mm.
Preferably, the aligning body is of a hollow cylindrical or truncated cone-shaped structure, the thickness of the aligning body is 0.7-2mm, and the height of the aligning body is 3-10 mm.
Preferably, the retainer surrounds the abutment
Faces or/and cut ends, terminating in
0.5-2mm below the cutting edge and 1-2mm in thickness
The 3D printing manufacturing method of the dental implant abutment locator provided by the invention comprises the following steps:
three-dimensional scanning: scanning the model of the dental implant abutment in place, scanning the local part of the dental implant abutment and the abutment again, and generating a three-dimensional digital model after scanning;
three-dimensional design: respectively designing a positioning body, a restoring body and a connecting body on the obtained three-dimensional digital model to form the dental implant abutment locator;
data processing: importing the designed dental implant abutment locator file into data processing software, and checking whether the dental implant abutment locator in the imported file has defects;
adjusting the height and the gradient of the dental implant abutment locator to generate a supporting structure;
slicing the dental implant abutment locator to obtain three-dimensional digital slicing data;
3D printing and forming: guiding the slice data obtained after data processing into a resin 3D printer for printing and molding;
and (3) post-treatment: and cleaning the printed and molded dental implant abutment locator, further performing photocuring, removing the support structure and polishing.
Preferably, before the dental implant abutment is put in place, an abutment treatment is carried out: and grinding the dental implant abutment by adopting a parallel grinding instrument to obtain the anti-rotation retention structure.
Preferably, the retention structure is a plane or a groove, the retention structure extends from the top end of the dental implant abutment up to the shoulder, leaving a wall thickness of the dental implant abutment of at least 0.3 mm.
Preferably, in the three-dimensional scanning process, the implant information is scanned on the three-dimensional digital model by means of the model;
before the three-dimensional design of the dental implant abutment locator, the design of the personalized abutment is firstly carried out, and then the three-dimensional design and the manufacture of the dental implant abutment locator are carried out according to the three-dimensional digital model and the designed personalized abutment.
Preferably, in the process of designing the implant in place, the shoulder edge of the dental implant abutment is drawn, and the generation of the abutment is carried out on the basis of the shoulder edge, so that the gingival edge of the abutment just coincides with the edge of the dental implant abutment.
Preferably, in the process of designing the reduction body, a mark is drawn according to the highest point of the outline of the abutment, and the generation of the boundary of the reduction body is carried out according to the mark as a reference.
Preferably, in the process of designing the positioning body, the clearance value between the positioning body and the shoulder platform of the dental implant base is 0.01-0.05mm, and the clearance around the shoulder platform of the dental implant base is 0.01 +/-0.002 mm;
in the process of designing the reduction body, the clearance value between the reduction body and the abutment is 0.01-0.05 mm.
Preferably, during the process of adjusting the height and the inclination of the dental implant abutment locator through data processing, the Z-axis direction of the three-dimensional digital model is turned over, so that the three-dimensional digital model can be used for adjusting the height and the inclination of the dental implant abutment locator
With downward incisional direction for supporting the restoration and connection bodies on the dental implant abutment locator
The square of the cut.
Preferably, when the retainer is a hollow truncated cone-shaped structure, the end with the larger diameter is placed in the process of designing the retainer
And cutting.
Preferably, in the data processing process, 3-5 points are set as identification points in the abutment positioning cavity of the abutment, and the non-undercut shape in the abutment hole is adjusted based on the identification points.
Preferably, in the process of slicing the dental implant abutment locator in data processing, the slices are inspected layer by layer from the base side, the condition of suspension or overlong cantilever beam of the slice is avoided, and if the condition occurs, supporting points are added or/and adjusted in corresponding areas.
Preferably, the post-treatment is carried out as follows:
taking down the dental implant abutment locator from the printing platform;
placing the taken dental implant abutment locator into a beaker filled with 95% medical alcohol, and placing the dental implant abutment locator into an ultrasonic vibration cleaning machine for cleaning for 3-10 min;
putting the cleaned dental implant abutment locator into a photocuring instrument for photocuring for 3-10 min;
removing the support structure of the dental implant abutment locator after photocuring, and paying attention to prevent the inherent structure of the dental implant abutment locator from being damaged;
further finely grinding the dental implant abutment positioner without the supporting structure, removing acute sharp edges and acute angles, properly adjusting the form of the dental implant abutment positioner, ensuring that the dental implant abutment positioner can be fully put in place on the dental implant abutment positioner, and ensuring that the dental implant abutment positioner can be fully put in place on the model.
The invention provides a model taking method of a dental implant abutment locator, which comprises the following steps:
matching and installing the dental implant abutment and the positioner thereof;
finding a direction capable of being in place, placing the dental implant abutment on the implant, and cutting off a restoring body of the dental implant abutment locator;
mounting the dental implantation abutment positioner with the restoration body cut off into the mouth again to ensure that the dental implantation abutment positioner is matched with the abutment in the fixing state, the neck edge is in place and does not contact with adjacent teeth;
and (3) adopting silicon rubber to carry out impression, embedding the implant abutment locator into an impression tray, taking the dental implant abutment out of the mouth, and resetting the dental implant abutment onto the implant abutment locator to obtain an accurate model.
The invention has the beneficial effects that: the invention relates to a restoration body and an abutment of a dental implant abutment locator
The surfaces or/and the cutting ends are matched to realize positioning, and a certain gap is reserved between the positioning body and the adjacent teeth, so that the positioning body can smoothly and accurately place without being extruded, the positioning and mounting accuracy of the dental implant abutment is ensured, a good foundation is provided for subsequent treatment and rehabilitation, and the positioning device can also greatly improve the positioning accuracy of the abutment and the adjacent teethThe time of the medical staff operating in the mouth of the patient is reduced, and the discomfort of the patient is relieved.
Drawings
Fig. 1 is a schematic view of a labial-buccal surface of the components of the digital dental implant abutment locator according to the present invention.
FIG. 2 is a diagram of the components of the digital dental implant abutment locator of the present invention
Schematic view of the surface.
Fig. 3 is a flow chart of a method for manufacturing a digital dental implant abutment locator according to the present invention.
Reference numerals: the abutment body 1, the restoration body 2, the clamping body 3, the connecting body 4, the dental implant abutment 5 and the abutment 6.
Detailed Description
The present invention is further described below.
As shown in figures 1 and 2, the dental implant abutment locator disclosed by the invention comprises an abutment body 1, a restoration body 2 and a connecting body 4 which are connected into a whole, wherein the gingival end of the abutment body 1 is provided with an abutment locating cavity matched with a dental implant abutment 5, the abutment locating cavity is communicated with an abutment screw hole, and the abutment screw hole extends and penetrates through the abutment body 1
Cutting end, the restoration 2 having a covering and fitting abutment 6
The surface and/or the cutting end are/is structured, and gaps are reserved between the aligning body 1 and the adjacent teeth and gum.
Here, the adjacent tooth is a tooth adjacent to the implant position, the abutment 6 is a tooth serving as a reference of the repositioning fixture in cooperation with the repositioning body 2, and it is generally preferable to use the adjacent tooth as the abutment 6 in order to shorten the length of the connecting body 4 and obtain a better repositioning accuracy. The abutment body 1 is a portion of the dental implant abutment locator which is in direct contact with the dental implant abutment and has an abutment fixture thereinThe abutment cavity, in which the dental implant abutment 5 is mounted for positioning, is designed to have an abutment screw hole diameter slightly larger than the abutment screw diameter so that the abutment screw can be screwed in through the opening. The restoration body 2 is a portion of the fixture of the dental implant abutment where the abutment 6 for repositioning the fixture is directly contacted, and the restoration body 2 covers the incisor end if the abutment 6 is an incisor or a cuspid, and the restoration body 2 covers the molar if the abutment 6 is a molar
And the reduction body 2 is tightly attached to the abutment 6, so that the positioner is accurately reduced in the mouth. The connecting body 4 mainly connects the positioning body 1 and the restoring body 2 and other positioning devices.
As shown in figure 1, when the positioner is installed, a certain gap is reserved between the positioning body 1 and the adjacent tooth, the position of the gap is not interfered by the adjacent tooth, and the whole positioner is reset in the oral cavity by means of the cooperation of the restoring body 2 and the abutment 6. Of each tooth
The facet/cut end has its protrusions in a specific form so that the retainer 2 can be fitted thereto to satisfy positioning in both the vertical and horizontal directions without using the gum and the side of the teeth for positioning as in the prior art described in the background. Except for the end 5 far away from the dental implant abutment, the two sides of the positioner are provided with the restoring bodies 2, so that the positioning accuracy is improved.
In addition to the aligning body 1, the repositioning body 2 and the connecting body 4, the positioner may further include a clamping body 3 for facilitating the holding of the positioner by technicians and physicians. For positioning a single dental implant abutment 5, which only requires one counter-body 1, the holder 3 can be designed to be positioned on the counter-body 1
Cutting end, the screw hole of the abutment extends and penetrates through the clamping body 3, and the restoring body 2 is connected to the two sides of the clamping body 3 through the connecting body 4. For positioning at least two dental implant abutments 5, a corresponding number of positioning bodies 1 are required, adjacent to each otherThe bits 1 are connected to each other by the connecting body 4, and the connecting body 4 between adjacent bits 1 serves as a holding body 3, and the connecting body 4 serving as the holding body 3 needs to be reinforced to some extent. In addition, the labial and buccal surfaces of the gripping body 3 are relatively parallel to the lingual and palatal surfaces to facilitate gripping.
The shape of the aligning body 1, the restoring body 2, the connecting body 4 and the clamping body 3 can be designed according to the requirements of patients according to the size, and the following is an optimal reference value, the aligning body 1 can be a hollow cylindrical or truncated cone-shaped structure, the thickness is 0.7-2mm, and the height is 3-10 mm. The restoring body 2 may be a shell structure, and in order to further improve the restoring effect of the restoring body 2, it is required to cover not only the abutment 6
The faces and/or cut ends also being intended to surround the abutment 6
Face and/or cut end, wrap-around being the covering of the restoration 2
On the basis of the face and/or the cut end, and also extends towards the root of the tooth, and the specific restoring body 2 can be terminated
0.5-2mm below the cutting edge and 1-2mm in thickness. The length of the clamping body 3 is 4-8mm, the height is 2-4mm, and the width is 3-7 mm; the width of the connecting body 4 is 3-7mm, the thickness is 2-4mm, the connecting body 4 mainly plays a connecting role, and the length of the connecting body is determined by the distance between other parts of the positioner.
Although the dental implant abutment locator of the present invention can also be manufactured in a conventional manner, the present invention also provides a 3D printing manufacturing method of the dental implant abutment locator, which includes the following steps:
three-dimensional scanning: scanning the model of the dental implant abutment 5 which is in place, scanning the local part of the dental implant abutment 5 and the abutment again, and generating a three-dimensional digital model after scanning;
three-dimensional design: respectively designing a positioning body 1, a restoration body 2 and a connecting body 4 on the obtained three-dimensional digital model to form the dental implant abutment locator;
data processing: importing the designed dental implant abutment locator file into data processing software, and checking whether the dental implant abutment locator in the imported file has defects;
adjusting the height and the gradient of the dental implant abutment locator to generate a supporting structure;
slicing the dental implant abutment locator to obtain three-dimensional digital slicing data;
3D printing and forming: guiding the slice data obtained after data processing into a resin 3D printer for printing and molding;
and (3) post-treatment: and cleaning the printed and molded dental implant abutment locator, further performing photocuring, removing the support structure and polishing.
3D prints the preparation and has following advantage:
1. the manufacturing time can be greatly shortened by adopting a digital design mode, and the production efficiency is improved;
2. the 3D printing forming mode can be adopted for batch forming at the same time, so that the production efficiency is greatly improved;
3. the accuracy of the dental implant abutment locator can be improved by adopting a 3D printing forming mode, and manual errors are reduced;
4. the material adding forming mode of 3D printing is adopted, the material consumption is accurately controlled, the material waste is avoided, and the material cost is saved;
5. the operation flow is further optimized by adopting a digital design and 3D printing and forming mode. In the traditional mode, a prosthesis and a dental implant abutment locator cannot be manufactured on a working model at the same time, only one item is finished, and the other item is carried out, but a digital design mode is adopted, and the two items can be carried out at the same time, so that the time of the whole manufacturing process can be greatly shortened, and the clinical waiting time is reduced.
In order to ensure the stability of the combination of the dental implant abutment 5 and the positioner and prevent the dental implant abutment 5 from rotating in the positioning process, the abutment is firstly processed before the dental implant abutment 5 is put in place: the dental implant abutment 5 is ground by a parallel grinding instrument to obtain an anti-rotation retention structure, and the retention structure can be collected on a three-dimensional digital model during three-dimensional scanning, so that a matched abutment positioning cavity is designed in the design of a subsequent positioner. The retention structure is generally a plane, and particularly, the retention structure can also be a groove, the retention structure extends from the top end of the dental implant abutment 5 to the shoulder, the wall thickness of the dental implant abutment 5 is kept at least 0.3mm, so that the strength of the abutment is ensured to be sufficient, and the abutment can be ground by referring to factors such as the protrusion degree of jaw teeth, radian and the like.
The three-dimensional scanning is a process of converting an entity model into a three-dimensional digital model, and a scanner with the precision of less than 15 mu m is preferably adopted to scan and acquire model data, and the method specifically comprises the following steps:
1. and placing the model with the planting base in place into a scanner with the accuracy of less than 15 mu m for scanning.
2. And then, the local part of the dental implantation abutment and the abutment are scanned finely.
3. And finishing scanning to generate a three-dimensional digital model.
It should be noted that the above steps describe the steps of selecting an appropriate abutment on the model, appropriately adjusting the abutment as needed, positioning the dental implant abutment on the model, and then scanning the dental implant abutment. If the mode of designing the personalized abutment is selected, the implant information is correspondingly transferred to the three-dimensional digital model by means of the scanning abutment, the personalized abutment is designed before the three-dimensional design of the dental implant abutment locator, and then the three-dimensional design and the manufacture of the dental implant abutment locator are carried out according to the three-dimensional digital model and the designed personalized abutment. In addition, in the actual production process, the jaw alignment model and the occlusion relationship are generally scanned synchronously during the three-dimensional scanning for designing the subsequent prosthesis, but the scanning of the jaw alignment model and the occlusion relationship is not described because the dental implantation abutment positioner disclosed by the invention does not require the scanning of the jaw alignment model and the occlusion relationship.
Three-dimensional design is a process of performing three-dimensional digital design of a Dental implant abutment locator on an obtained three-dimensional model using Dental 3D design software (e.g., 3Shape Dental Designer, EXO CAD, etc.).
The method specifically comprises the following steps:
1. design of the bit 1: the abutment body 1 is designed on the dental implantation abutment and can be in the shape of a hollow cylindrical or truncated cone-shaped resin body, and for smooth placement of the supporting structure during data processing before subsequent 3D printing and forming, when the abutment body is in the shape of a truncated cone, one end with a larger diameter is placed at the position of the supporting structure
And cutting. In order to ensure that the interior of the dental implant abutment is tightly attached to the dental implant abutment 5 and can be smoothly taken and worn, the value of the gap above the shoulder of the dental implant abutment between the two is set to be 0.01-0.05mm, and the gap around the shoulder of the dental implant abutment is about 0.01 +/-0.002 mm; at it
The cutting end is provided with an abutment screw hole with a diameter slightly larger than that of the abutment screw so as to be screwed into the abutment screw through the abutment screw hole; the thickness of the utility model is 0.7-2mm, and the height is 3-10 mm. In order to ensure the perfect fit between the abutment 1 and the dental implant abutment 5, in the process of designing the abutment 1, the shoulder edge of the dental implant abutment 5 is drawn first, and the abutment 1 is generated on the basis of the shoulder edge, so that the edge of the abutment 1 in the gum side (i.e. the side facing the gum) is just consistent with the edge of the dental implant abutment 5, and the abutment 1 and the gum are not contacted with each other under the condition of ensuring the stable fit between the abutment 1 and the abutment.
2. Design of the retainer 2: a restoring body 2 is designed on the adjacent tooth beside the dental implant abutment 5, and the shape of the restoring body is to surround the abutment 6
Faces and/or cut ends, the extent of which should cover the abutment 6
A face or a cut end, terminating in
Below the cutting edge0.5-2mm, and the thickness is 1-2 mm. In order to ensure that the interior of the dental implant abutment 5 is tightly attached to the dental implant abutment and can be smoothly worn, the gap value between the two is set to be 0.01-0.05 mm. In order to ensure the smooth positioning of the restoration position, the appearance visual appearance high point of the adjacent tooth body is found out, a mark is drawn approximately, and then the computer generates a boundary according to the mark.
3. Design of the linker 4: a connecting body 4 is designed between the positioning body 1 and the restoration body 2 to connect the positioning body and the restoration body into a whole. The width of the clamp is designed to be 3-7mm, the width of the clamp is matched with the width of the clamping body 3 and the width of the aligning body 1, and the thickness of the clamp is designed to be 2-4 mm. As the overall length of the dental implant abutment locator is increased, the width and thickness of the connecting body 4 should be increased accordingly to ensure strength.
4. Design of the clamping body 3: the clamping body 3 is designed on the upper end of the positioning body 1 or/and on the part of the connecting body 4 between the plurality of positioning bodies 1. The labial-buccal surface and the lingual-palatal surface are designed to be parallel and opposite, the length of the labial-buccal surface and the lingual-palatal surface is designed to be 4-8mm, the height of the labial-buccal surface and the lingual-palatal surface is designed to be 2-4mm, and the width of the labial-buccal surface and the lingual-palatal surface is designed to be 3-7mm, so that a technician and a doctor can hold the labial-buccal surface and the lingual-palatal surface conveniently.
Data processing is a process of performing corresponding processing on the digital model of the dental implant abutment locator obtained in three-dimensional design in data processing software (such as Magics, CAMbridge, PreForm) to ensure that the digital model can be printed and formed successfully, efficiently and with high quality. The method specifically comprises the following steps:
1. importing a file of the designed dental implant abutment locator into data processing software, wherein the file format can be STL, OBJ, AMF, 3MF and the like, and the STL file is taken as an example;
2. the dental implant abutment locator in the introduced STL file is inspected to have defects of no holes, broken edges, interference shells and the like. If the defect exists and the defect is smaller and can be repaired by the data processing software, the data processing software is used for repairing the defect; for defects that are large and not repairable by data processing software, the sought cause should be analyzed and a three-dimensional design step returned for redesign. It must be ensured that the dental implant abutment locator is a complete, closed housing;
3. adjusting the height and inclination of the dental implant abutment locator, forThe height and inclination of each of the plurality of STL files printed simultaneously are adjusted. The Z-axis direction (i.e., vertical direction) of the STL model is reversed so that
Downward in the tangential direction, for supporting the restoration body 2, the holding body 3 and the connecting body 4 of the dental implant abutment locator
On the tangential plane, the matching surface of the reset body 2 and the abutment 6 and the abutment positioning cavity of the retainer 1 are upward correspondingly during the printing process, and the lower part of the positioning cavity is provided with structural support, so that higher printing precision can be obtained.
4. In order to further improve the precision of the positioning cavity of the abutment, 3-5 points are found at the top of the hole of the abutment body 1 to be used as identification points, and the position in the hole of the abutment body 1 is adjusted to be in a non-inverted concave state through a computer based on the identification points so as to ensure the absolute precision of printing. Meanwhile, the adjustment is carried out on the principle that the supporting surface is as small as possible and the height in the vertical direction is as small as possible; the height of the adjusted three-dimensional model from the substrate is 0.5-5 mm;
5. creating a support structure that is required to be easily removed after molding of the bite plate while ensuring that the printed dental implant abutment locator can be firmly supported; the supporting structure should be reduced as much as possible under the condition of ensuring the supporting strength;
6. and slicing the dental implant abutment locator to obtain slice data, wherein the thickness of the slice is set to be 20-90 mu m. And (3) inspecting each slice layer by layer from the substrate side by the slice, wherein suspension or too long cantilever beam of the slice layer cannot occur, and if the suspension or too long cantilever beam of the slice layer occurs, a supporting point is added or/and adjusted in a corresponding area.
7. And typesetting and placing the simultaneously printed files of the tooth planting base station locators to ensure that the three-dimensional models are not overlapped in contact, wherein the distance between the models is more than or equal to 0.5mm and is 5-10mm away from a forming boundary to ensure the safety and no defect in forming.
8. And storing the design to obtain three-dimensional digital slice data.
The 3D printing is a process of manufacturing the section data obtained by processing the data into the positioner of the dental implantation abutment by using a resin 3D printer, and the printing material is preferably resin, but other suitable materials can be considered. The method specifically comprises the following steps:
1. placing printing instrument components such as a resin tank, a construction platform and the like according to related requirements;
2. putting the corresponding resin material which meets the national relevant medical standard into an instrument according to the operation instruction of a relevant 3D printer;
3. importing slice data;
4. adjusting relevant parameters of a 3D printer needing parameter adjustment, and then starting printing; for 3D printers for which the parameters are preset and not adjustable, printing is started directly after the slice data is imported. Residual resin drips still exist on the positioner of the dental implant abutment after the 3D forming, and ultrasonic cleaning is carried out in alcohol solution; the dental implant abutment locator is not completely photocured in the 3D printing and forming process, so further photocuring is needed; the supporting structure is a structure necessary for ensuring the printing to be carried out smoothly, but does not belong to the component part of the dental implant abutment locator, so the supporting structure needs to be removed; in order to obtain the final desirable dental implant abutment locator, it is also necessary to grind it. The method specifically comprises the following steps:
1. taking down the dental implant abutment locator from the printing platform;
2. placing the taken dental implant abutment locator into a beaker filled with 95% medical alcohol, and placing the dental implant abutment locator into an ultrasonic vibration cleaning machine for cleaning for 3-10 min;
3. putting the cleaned dental implant abutment locator into a photocuring instrument for photocuring for 3-10 min;
4. removing the support structure of the dental implant abutment locator after photocuring, and paying attention to the fact that the inherent structure of the dental implant abutment locator cannot be damaged;
5. further finely grinding the dental implant abutment positioner without the supporting structure, removing acute sharp edges and acute angles, properly adjusting the form of the dental implant abutment positioner, ensuring that the dental implant abutment positioner can be fully put in place on the dental implant abutment positioner, and ensuring that the dental implant abutment positioner can be fully put in place on the model.
After the dental implant abutment locator is manufactured, the dental implant abutment locator can be clinically used. When the dental implant fixture is clinically used, the dental implant abutment and the positioner are firstly sterilized and are installed in a matching way through the pre-grinding retention structure, the edge of the dental implant abutment is ensured to be exactly coincident with the edge of the positioner, and the process can be finished within 5-10 seconds. Then the combined dental implantation abutment and the positioner are put into the mouth of a patient, and the reduction body 2 and the abutment 6 of the positioner
The/section is matched for installation, the positioner is reset in the mouth under the action of the restoring body 2, so that the dental implant abutment is positioned to the correct installation position, and then the abutment can be installed. Normally, the reduction body 2 and the abutment 6
The section should be sealed, at this time, the accurate transfer installation can be completed only by using a special screwdriver to tighten the screw of the tooth implantation abutment and applying force, and the process can be completed within 1 minute.
In planting base station locator installation, it also is the finder simultaneously to plant the base station locator, if the discovery can't wear the driving fit during the installation of one step earlier, then explains doctor's fetching the mould inaccurate earlier stage, needs the fetching the mould again. The planting base station positioner is also a mold extractor in the mold extracting process again, and the specific mold extracting method comprises the following steps:
matching and installing the dental implant abutment and the positioner thereof;
finding a direction capable of being in place, placing the dental implant abutment on the implant, and cutting off a reset body 2 of the positioner of the dental implant abutment;
mounting the tooth implantation abutment positioner cut off the restoration body 2 into the mouth again to ensure that the tooth implantation abutment positioner is matched with the abutment in the fixing form, the neck edge is in place and is not in contact with adjacent teeth;
the method comprises the steps of taking a dental implant abutment out of a mouth, resetting the dental implant abutment to the implant abutment positioner to obtain an accurate model, and remanufacturing the implant abutment positioner according to the model.
In summary, the dental implant abutment locator of the present invention can achieve three purposes: the positioner, the checker and the mold extractor have wide clinical application range and great effect.
Claims (17)
1. Dental implant abutment locator including connecting as an organic whole with regard to body (1), reset body (2) and connector (4), the gum end with regard to body (1) has the abutment location chamber with dental implant abutment (5) looks adaptation, abutment location chamber is linked together there is the abutment screw hole, the extension of abutment screw hole runs through with regard to the abutment screw hole (1)
Cutting tip, characterized in that the restoration body (2) has a covering and fitting abutment (6)
The surfaces and/or the cut ends are/is in a structural shape, and gaps are reserved among the positioning body (1), the adjacent teeth and the gum;
the restoring body (2) surrounding the abutment (6)
Faces or/and cut ends, terminating in
0.5-2mm below the cutting edge;
and the dental implant abutment locator is used for forming a model extractor for re-taking a model after the restoring body (2) is cut off.
2. The dental implant abutment locator of claim 1, further comprising a holder (3), the holder (3) being located at the abutment (1)
The screw hole of the abutment extends and penetrates through the clamping body (3), and the restoring body (2) is connected to two sides of the clamping body (3) through the connecting body (4).
3. The dental implant abutment locator of claim 1, comprising at least two abutments (1), adjacent abutments (1) being connected by a connector (4), the connector (4) between adjacent abutments (1) acting as a holder (3).
4. The dental implant abutment locator of claim 2 or 3, wherein the holder (3) has a length of 4-8mm, a height of 2-4mm and a width of 3-7 mm; the width of the connecting body (4) is 3-7mm, and the thickness is 2-4 mm.
5. The dental implant abutment locator of claim 1, wherein the abutment body (1) has a hollow cylindrical or truncated cone-shaped configuration, a thickness of 0.7-2mm and a height of 3-10 mm.
6. The dental implant abutment locator of claim 1, wherein the reduction body (2) has a thickness of 1-2 mm.
7. The method for 3D printing a dental implant abutment locator of any one of claims 1-6, comprising the steps of:
three-dimensional scanning: scanning the model of the dental implant abutment (5) in place, scanning the local part of the dental implant abutment (5) and the abutment again, and generating a three-dimensional digital model after scanning;
three-dimensional design: respectively designing a positioning body (1), a reset body (2) and a connecting body (4) on the obtained three-dimensional digital model to form the dental implant abutment locator;
data processing: importing the designed dental implant abutment locator file into data processing software, and checking whether the dental implant abutment locator in the imported file has defects;
adjusting the height and the gradient of the dental implant abutment locator to generate a supporting structure;
slicing the dental implant abutment locator to obtain three-dimensional digital slicing data;
3D printing and forming: guiding the slice data obtained after data processing into a resin 3D printer for printing and molding;
and (3) post-treatment: cleaning the printed and molded dental implant abutment locator, further performing photocuring, removing a support structure and polishing;
in the process of adjusting the height and the inclination of the dental implant abutment locator through data processing, the Z-axis direction of the three-dimensional digital model is turned over so as to ensure that
With a downward incisional direction for supporting a restoration body (2) and a connection body (4) of a dental implant abutment locator
A/tangential plane;
when the retainer (1) is in a hollow round table structure, the end with larger diameter is arranged in the process of designing the retainer (1)
And cutting.
8. The 3D printing production method according to claim 7, wherein before the dental implant abutment (5) is put in place, an abutment treatment is performed: the dental implant abutment (5) is ground by a parallel grinding machine to obtain a rotation-resistant retention structure.
9. The 3D printing production method as claimed in claim 8, wherein the retention structure is a plane or a groove, the retention structure extending from the top end of the dental implant abutment (5) up to the shoulder, the wall thickness of the retained dental implant abutment (5) being at least 0.3 mm.
10. The 3D printing production method according to claim 7, wherein in the three-dimensional scanning process, implant information is applied to the three-dimensional digital model by means of scanning the model;
before the three-dimensional design of the dental implant abutment locator, the design of the personalized abutment is firstly carried out, and then the three-dimensional design and the manufacture of the dental implant abutment locator are carried out according to the three-dimensional digital model and the designed personalized abutment.
11. The 3D printing production method according to claim 7, wherein in designing the abutment (1), a shoulder edge of the dental implant abutment (5) is first drawn, and the generation of the abutment (1) is performed on the basis of the shoulder edge, such that the gingival side edge of the abutment (1) is exactly in line with the edge of the dental implant abutment (5).
12. The 3D printing production method according to claim 7, wherein during designing the restoration body (2), a mark is drawn with a highest point of the outer shape of the abutment (6), and the boundary of the restoration body (2) is generated based on the mark.
13. The 3D printing production method according to any one of claims 7 to 12, wherein in designing the retainer (1), the clearance between the retainer (1) and the dental implant abutment above the shoulder has a value of 0.01 to 0.05mm, and the clearance around the shoulder of the dental implant abutment has a value of 0.01 ± 0.002 mm;
in the process of designing the restoring body (2), the clearance value between the restoring body (2) and the abutment (6) is 0.01-0.05 mm.
14. The 3D printing production method according to claim 7, wherein 3 to 5 dots are set as the identification points in the abutment positioning cavity of the in-place body (1) during the data processing, and the in-hole of the in-place body (1) is adjusted to be in the non-undercut state based on the identification points.
15. The 3D printing fabrication method of claim 7, wherein during the data processing to slice the dental implant abutment locator, the slices are inspected layer by layer from the basal side to avoid dangling or too long cantilever of the slice, and if so, support points are added or/and adjusted in corresponding areas.
16. The 3D printing production method according to claim 7, wherein the post-processing is performed by the following specific steps:
taking down the dental implant abutment locator from the printing platform;
placing the taken dental implant abutment locator into a beaker filled with 95% medical alcohol, and placing the dental implant abutment locator into an ultrasonic vibration cleaning machine for cleaning for 3-10 min;
putting the cleaned dental implant abutment locator into a photocuring instrument for photocuring for 3-10 min;
removing the support structure of the dental implant abutment locator after photocuring, and paying attention to prevent the inherent structure of the dental implant abutment locator from being damaged;
further finely grinding the dental implant abutment positioner without the supporting structure, removing acute sharp edges and acute angles, properly adjusting the form of the dental implant abutment positioner, ensuring that the dental implant abutment positioner can be fully put in place on the dental implant abutment positioner, and ensuring that the dental implant abutment positioner can be fully put in place on the model.
17. A method of impression taking using the dental implant abutment locator of any one of claims 1-6, comprising the steps of:
matching and installing the dental implant abutment and the positioner thereof;
finding a direction capable of being in place, placing the dental implant abutment on the implant, and cutting off a reset body (2) of the positioner of the dental implant abutment;
mounting the tooth implantation abutment positioner cut off the restoring body (2) into the mouth again to ensure that the tooth implantation abutment positioner is matched with the abutment in a fixed position form, the neck edge is in place and is not in contact with adjacent teeth;
and (3) adopting silicon rubber to carry out impression, embedding the implant abutment locator into an impression tray, taking the dental implant abutment out of the mouth, and resetting the dental implant abutment onto the implant abutment locator to obtain an accurate model.
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| CN112043424A (en) * | 2020-08-04 | 2020-12-08 | 苏州市康泰健牙科器材有限公司 | 3D printing preparation method of planting base table upper positioner |
| CN112451135B (en) * | 2020-11-12 | 2021-12-17 | 北京联袂义齿技术有限公司 | Processing method of pure titanium personalized abutment |
| CN112353516B (en) * | 2020-12-02 | 2021-08-31 | 四川大学 | Axial and depth checking guide plate for planting and manufacturing method thereof |
| CN113130082B (en) * | 2021-04-19 | 2024-03-19 | 深圳云甲科技有限公司 | Construction method and device of base station positioner, storage medium and terminal |
| CN114343892A (en) * | 2022-01-05 | 2022-04-15 | 东莞定远陶齿制品有限公司 | Method for improving stability of planting superstructure |
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