TWI438732B - Intergrated method of adapting guide - navigation systems and bio-prosthesis fabrication for dental implantation - Google Patents

Description

Integrated method for forming a dental carcass with a stereotactic guidance system

The present invention relates to an integrated method for forming a dental implant body using a stereotactic positioning guide system, and more particularly to a virtual oral positioning system for generating a virtual model, thereby enabling virtual dental implant surgery. Shorten the time of implant surgery and avoid injury to the patient's neural tube during actual surgery.

Today's dental implant methods include the following steps:

(1) Making a model, the dentist or technician will make the patient's tooth state into a plaster model, and set a surgical reference plate with a metal tube in the plaster model, or other radioactive material (Radio opaque) as the positioning. point.

(2) Computerized Tomography (CT), the patient performs an oral tomography scan to obtain an image in the oral cavity, and a 3D rendering model is created with the aforementioned anchor point and the image.

(3) Adjust the horizontal angle of the occlusal surface.

(4) Producing a panoramic view, in a coronal cut (Coronal Section) Plane to select the archwire line to generate a panoramic view.

(5) The virtual sacral canal is produced, and the computer software is automatically connected in series to form a uniform sacral canal in the plane of the coronal, panoramic or dental arch line.

(6) Virtual teeth and implants, virtual teeth are placed on the arch line, and the size of the teeth is adjusted, and the virtual implants are placed on the orthogonal sections of the arch line.

(7) Surgery, confirm the size of the implant, adjust its stereo position one by one, and use this data to make the implant aperture guide plate, the patient try to adjust the implant aperture guide plate, or re-create, if the patient tries on it, There is no problem, the dentist can perform surgery to complete the procedure of implanting teeth.

However, there are still many shortcomings in the above-mentioned method of implanting teeth, which are described as follows:

First, the plaster model is often subject to inspection results, and the positioning plate must be repeatedly modified, so that the original reference plate can not be applied, but must be remanufactured, so it takes time.

2. If there are metal dentures in the patient's mouth, the metal dentures will interfere with the scattering during the tomographic scan, so the shape of the patient's teeth cannot be correctly presented. Therefore, it is necessary to take time to make the auxiliary plaster model and then convert it into digital data to confirm the dentition. Correct shape or higher order image processing CT data shaping.

Third, some dental implant software still require complicated operation steps, and most of them are applied to single implants. If applied to multiple implants, implanted computer software cannot be grouped, so it is applied to multiple implants. When the operation is planned, its efficacy is not good.

Fourth, the virtual sacral neural tube produced by the computer software is often marked by multiple points in the average diameter. The error value is still high, and often it is unable to play its warning role.

5. Only the implanted aperture guide plate can be output in the existing way, and cannot be planned or output. The function of the three-dimensional spatial positioning guide.

6. The pattern section of all implants or the prefabricated denture kit, which does not conform to the shape of the natural root, does not conform to the ergonomic design and is contrary to aesthetics.

In view of the above-mentioned problems of the prior art, the object of the present invention is to provide an integrated method for forming a dental implant body using a stereotactic positioning system to solve the next day of the physical model of the dental implant. The problem of waste time, the dentures are not beautiful and the ergonomics, the existing computer software can not play the proper warning function, the irregular dental painting surgery, the error caused by the interference of the tomographic scan can not be overcome, and the existing computer software can only be used for a single computer. A dental implant.

The present invention provides an integrated method for forming a dental implant body using a stereotactic positioning system, the steps of which include virtual oral positioning: respectively, the oral impression tray and the patient wearing the dental impression tray are respectively subjected to a fault Scan and create two images separately, and establish coordinate transfer between the two images to establish corresponding coordinates in the patient's mouth or its digital upper and lower jaw model; virtual model establishment: using the aforementioned coordinates to establish in the 3D model of the patient's tomography scan Imaging of the sacral canal or marginal canal; establishment of a database of natural teeth and implants: natural tooth data and 2D/3D model data of each plant in a database; and virtual dental implant surgery: selection The image and the database are used to generate a guiding plate for the implant, and a computer screen is used to simulate the implantation of the patient's mouth to implant a single denture or a plurality of dentures, and the denture can simulate the shape of the natural tooth. In order to conform to the root shape of the patient's mouth, the computer screen also shows the positioning and size setting of the dental implanter and the drill.

The invention may further comprise the denture data selected in the above steps and transmitted to the computer Auxiliary machines or rapid prototyping machines for the manufacture of dentures.

The invention further includes a cloud data area for establishing a virtual oral location, a virtual model establishment, a database of natural tooth and implant establishment, and a computer program and a database used for virtual dental implant surgery. In the device, virtual implant surgery is performed through the Internet and at any appropriate location, so that the cloud technology system can expand the participation of the treatment structure group, thereby reducing communication barriers and working hours of the medical group.

As described above, the method of using the stereotactic positioning system of the living body according to the present invention can have a plurality of advantages as follows:

1. The present invention directly scans the image of the second tomographic image, and the coordinates generated by the comparison are used to generate a virtual model, and the virtual model can be brought closer to the actual state of the patient's mouth, so that the user can design the terminal. Guide plates that meet clinical needs are prefabricated to meet the patient's biopsy.

Second, the elimination of the production of the physical model is time-consuming and replaced by a virtual model, thereby shortening the operation time, and simultaneously distinguishing the three-dimensional shape of the soft and hard tissue, overcoming the previous inspection results can not fully present all the intraoral conditions at one time.

3. The invention obtains a tomographic image by using a dental impression tray, thereby generating a virtual model, which can avoid the interference scattering of the metal denture, and can correctly represent the shape of the patient's teeth, which is beneficial to the subsequent implant planning.

Fourth, virtual dental implant surgery, which enables the dentist to be accurately implemented during the actual operation, and can avoid the nerve canal or sinus that can be expected to harm the patient.

5. The dentures produced are closer to the natural teeth, and the complex parts of the dentures It is closer to the space in the original gums, so that the dentures are aesthetically and ergonomically designed.

Sixth, the invention can be used by the dentist to perform pre-operative exercises to make the dentist's surgical technique more perfect.

Seventh, the establishment of the image of the sacral neural tube or the marginal tube makes it close to the real nerve of the patient, so the error value is low, so it can really play its warning role.

8. The invention can plan a single implant, or can be grouped to cope with multiple implant operations, and can make corresponding adjustments in a shorter time according to the actual surgical state.

9. The present invention can further perform virtual dental implant surgery at any suitable position through the cloud technology, so that the present invention has better convenience and participation scale.

a~f‧‧‧Step process

1‧‧‧Dental impression tray

2‧‧‧ Lower jaw neural tube

3‧‧‧ Lower jaw bone

4‧‧‧Guideboard

Fig. 1 is a schematic flow chart showing a method of using a stereotactic positioning system for a living body in accordance with the present invention.

Figure 2 is a schematic illustration of an oral impression tray of the present invention.

Fig. 3 is a schematic view of the sacral canal of the present invention.

Figure 4 is a schematic illustration of the tibia below the present invention.

Figure 5 is a schematic view of the guide sheet of the present invention.

Figure 6 is a schematic view of a partial dental implant exercise of the present invention.

Referring to FIG. 1 , the present invention is a schematic flow chart of an integrated method for forming a dental implant body using a stereotactic positioning guide system. In the figure, the steps of the present invention include the following:

a. Virtual Oral Positioning: Figure 2 is a schematic view of the oral impression tray of the present invention. The impression material is filled in the Dental impression tray 1. The dental impression tray 1 has a plurality of positioning points or polygonal objects, and the dental impression tray 1 is subjected to tomography (CT) to establish Image, the patient then wears the dental impression tray 1 to perform a tomographic scan and establish another image, and establish a one-to-one label transfer relationship between the image of the dental impression tray 1 and the patient's image for the patient's mouth or The digital upper and lower 颚 model establishes the corresponding coordinates. In addition, the dental impression tray 1 can be provided with a radio opaque at its three or more positions as a positioning point.

b. Virtual model establishment: Please refer to Fig. 3, which is a schematic diagram of the sacral canal of the present invention. Using the above coordinates, the sacral canal 2 or the Incisal canal is formed at the actual size of the single or multiple points of the section of the 3D model of the patient's tomography; see Figure 4, It is a schematic diagram of the tibia under the present invention. The stereo position and size of the structure under the patient's tibia 3 can be accurately evaluated to facilitate further risk assessment of dental surgery, which can be corrected for dental implants or orthognathic surgery; The images of the dental impression tray are manipulated to produce an upper and lower squat entity or a digital model.

c. Establishment of the database of natural teeth and implants: The natural tooth data in the database contains the shape of the natural tooth 3D model, in order to make the deformation of the individual tooth root shape, which is the upper platform of the selected dental implant. Diameter, and the normal root of the tooth to be made of dentures, the overlap of each other by 2mm~4mm The gradual change is made to produce a 3D model image file; the database also contains the 2D/3D model data of the implants of the various brands, which are the platform, the diameter and length of the implant.

d, virtual implant surgery: please refer to the reference figure 5, which is a schematic diagram of the guide plate of the present invention, the operator selects the image and database generated by steps a to c to generate the guide plate of the implant 4. The operator can select an implant point in a patient's mouth in a computer screen to implant a single denture or a plurality of dentures, which can simulate the shape of the natural tooth to conform to the root shape of the patient's mouth. The computer screen also shows the positioning and size setting of the implanter and the drill.

The implantation point is set as follows: the position of the implanted tooth is the implantation point, and the arch line (X-axis) of the implant point is mainly; the arch line is the image of the crown cut, and the teeth of the upper and lower jaws The teeth of the trough are pointed out; the sides of the arch line are 1 to 2 cm each, and the arch line is orthogonal to the section (Y axis) to generate 2D model images and maintain orthogonal point adjustment. The angle between the X and Y axes (2 to 5 degrees/time), to the axis of the adjacent teeth, and the positive focus can be moved horizontally back and forth or left and right to adjust to the ideal implantation point, and establish the confirmed cut surface The implanted teeth are implanted in a stereoscopic axis; the stereoscopic axial direction is selected to establish a reference axis, and the parallel implanted groups can be applied at different positions, and the common parallel axes are adjusted in groups, and a set of dental arches The line can establish multiple groups to simplify the planning procedure of implant planning. Each patient can establish multiple sets of archwire lines, which are divided into upper and lower categories, and can adjust the diameter of the implant to 3.25 to 6mm and provide planting. The body safety spacing value is set or projected into the relevant 2D/3D model image with a perspective view of the relevant implant.

The 3D model can be translucent to show the actual size of the neural tube, as well as the implant Outline drawing, and can be applied with opaque/transparent surface colors.

Different 3D models can establish a one-to-one conversion between the patient's image and the digital model. Image fusion is used to plan the implant path and digital teeth, and can be nested to evaluate the implant space and the original natural tooth. difference.

The guiding plate 4 of the implant is an implant aperture guiding plate, an implant positioning guiding plate and a composite implant guiding plate, and the image impression is taken, the image segmentation and the image growth are performed to control the dental impression die. The image model is computed to create an implant placement path and other implant positioning guides or implant aperture guides that are fully adhered to the tooth and gum surface, or provide more surgical area of the cochlear area as required by the surgical procedure. Composite implant guide plate for bone contact surfaces.

e. Solid denture molding: Transfer the denture data selected in step d to the computer aided machine or rapid prototyping machine to make the selected dentures into shape. Please refer to FIG. 6 , which is a schematic diagram of a partial dental implant exercise of the present invention. As shown in the figure, in this step, the dentist can use the above-mentioned guide plates and the existing dentures to perform pre-tooth implant exercises and previews to reduce the risk or error that may occur during actual implants. And improve their medical skills.

f. Establishing a cloud processing area: The computer programs and database used in the foregoing steps a to d can be built in a cloud server through the Internet to allow the operator to perform virtual implant surgery at any suitable location. The cloud technology system can be used to expand the participation of the treatment structure group to reduce and shorten the barriers and working hours of the medical group.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

Claims (8)

An integrated method for forming a dental implant with a stereotactic positioning system, the steps comprising: a, virtual oral positioning: respectively, the oral impression tray and the patient wearing the dental impression tray are respectively subjected to a fault Scanning, and respectively establishing two images, establishing coordinate transfer between the two images to establish corresponding coordinates in the patient's mouth or its digital upper and lower jaw model; b, virtual model establishment: using the coordinates of step a, in the patient's fault The image of the sacral canal or the marginal canal is established in the scanned 3D model; c. The database of natural teeth and implants is established: the natural tooth data and the 2D/3D model data of the implants in each database are provided in a database. And d, virtual implant surgery: select the image and database generated by steps a to c to generate the guide plate of the implant, and use a computer screen to simulate the implantation of the patient's mouth to implant a single denture or a plurality of dentures, the denture can simulate the shape of the natural tooth to conform to the root shape of the patient's mouth, and the computer screen also shows the positioning and size setting of the dental implanter and the drill needle; In the step d, the implant point is set to be the implantation point of the implanted tooth, and the arch line (X axis) of the implant point is mainly; the arch line is a crown cut image a line is drawn at the tooth position of the alveolar bone of the upper and lower jaws; a panoramic view is produced after each of the arch line 1 to 2 cm; the arch line is orthogonal to the section (Y axis) to generate a 2D model image And maintain the orthogonal point to adjust the clamping angle of different X and Y axes (2 to 5 degrees / time) to match the axis of the adjacent tooth, and move horizontally with the positive focus back and forth or left and right to adjust to the ideal implant Point and establish the stereoscopic axial direction of the implant implant in the confirmed section Selecting the implanted stereo axis to establish the reference axis, the parallel implants can be applied at different positions, and the common parallel axis can be adjusted in groups, and a group of arch lines can establish multiple groups. In order to simplify the planning procedure of implants, each patient can establish multiple sets of archwire lines, which are divided into upper and lower categories, and can adjust the diameter of the implants by 3.25 to 6 mm at the same time, or project to the perspective of the relevant implants to Related 2D/3D model maps. An integrated method for forming a dental carcass using a stereotactic guidance system according to claim 1, further comprising the step e, forming a solid denture: the step d is in the database The selected denture data is transmitted to a computer-assisted machine or a rapid prototyping machine to mold the selected denture. An integrated method for forming a dental implant body using a stereotactic positioning system according to claim 1, further comprising establishing a cloud processing area: the computer program used in the steps a to d The database is built into a cloud server and can be used for virtual implant surgery at any suitable location via the Internet. An integrated method for forming a dental implant body using a stereotactic positioning system according to claim 1, wherein in the step a, the dental impression tray is filled with an impression material, the stencil The mold tray has a plurality of positioning points or polygonal objects, or the dental impression tray can be respectively provided with radiopaque materials at three points thereof as positioning points, and the oral impression tray is subjected to tomographic scanning. To create an image, the patient then wears the dental impression tray for tomography, and creates another image, and a relationship between the image of the dental impression tray and the image of the patient establishes a one-to-one label transfer relationship. Corresponding coordinates are established in the patient's mouth or in the digital upper and lower jaw model. An integrated method for forming a dental carcass complex using a stereotactic guidance system according to claim 1, wherein the step b is performed using a coordinate of the step a in a tomographic scan of the patient At the single or multi-point position of the section of the 3D model, The sacral canal or marginal canal can be formed in a practical size, and the stereoscopic position and size of the structure in the tibia below the patient can be accurately evaluated for further risk assessment of dental surgery, which can be implanted or The correction is performed; and the image of the dental impression tray is calculated by image over-molding technology to generate an upper and lower body or a digital model. An integrated method for forming a dental implant body using a stereotactic guidance system according to claim 1, wherein the step c, the natural tooth data in the database includes a natural tooth 3D model Morphology, in order to make a deformed part of the denture of the individualized root shape, which selects the diameter of the upper platform of the implant, and the 3D~4mm gradient of the normal root of the tooth to be made of the denture, to make a 3D Model image files; the data of each brand is the platform, implant diameter and length. An integrated method for forming a dental implant body using a stereotactic guidance system according to claim 1, wherein the 3D model is translucent to display a neural tube of an actual size therein, and The tooth profile of the implant can be applied with different opaque/transparent surface colors, and different 3D models can establish a one-to-one conversion between the patient's image and the digital model. Image fusion is used to plan the implant path and A number of teeth can be nested to assess the space of the implant. An integrated method for forming a dental implant body using a stereotactic guidance system according to claim 1, wherein the guiding plate of the implant is an implant aperture guiding plate and an implant positioning guide. The guide plate and the composite implant guide plate are used to calculate the image model of the dental impression mold by image feature extraction, image segmentation and image growth to generate an implant implantation path and the other is completely adhered to The implant positioning guide plate or the implant aperture guide plate on the tooth and the gingival surface, or the composite implant guide plate of the alveolar bone contact surface of the operation area according to the operation requirement.