CN107485460A - A kind of 3D printing method of the more root of the tooth planting bodies of personalized porous layer - Google Patents

Abstract

A 3D printing method for a personalized porous-layer multi-root implant, comprising the following steps: Step 1, scanning an object and acquiring data. Step 2: Use MIMICS software to separate and reconstruct the data obtained in Step 1 for the scanning area, and obtain the three-dimensional models of the root, socket, crown and dentition area of the subject to be extracted. Step 3: Use Magic software to edit the 3D model in step 3, digitally design the root, abutment and crown of the implant and adjust the printing parameters as the implant model to be printed. Step 4: Copy the data of the implant model to be printed in Step 3 to a 3D printer for printing to obtain a personalized porous-layer multi-root implant. The method has the advantages of high manufacturing precision, shortening the course of implantation, reducing the cost of implantation and improving the stability of the root implant.

Description

A 3D printing method for a personalized porous layer multi-root implant

technical field

The invention relates to the field of dental implants, in particular to a 3D printing method for a personalized porous-layer multi-root implant.

Background technique

Oral implant surgery is a surgical procedure in which oral implants are implanted into the jawbone in the edentulous area, and artificial crowns are made on the implants to replace the missing natural teeth to exercise their physiological functions. According to the length of implant treatment, it can be divided into immediate implant surgery and delayed implant surgery.

Delayed implantation is currently the most common surgical method in clinical practice, that is, after 3-4 months of tooth loss or extraction, the implantation operation is performed after the growth of soft tissue and bone tissue in the edentulous area recovers to a certain extent. The course of implantation treatment is relatively long, and it will cause secondary surgical trauma. Immediate implantation refers to implanting implants immediately after tooth extraction. Its advantages lie in reducing diagnosis and treatment time and surgical injuries, and retaining bone tissue as much as possible and maintaining soft tissue morphology, which is more in line with aesthetic requirements and meets patients' aesthetic expectations. The initial stability of the implant for immediate implant surgery is very important, and it largely determines the success or failure of the implant surgery.

At present, the commonly used dental implants in clinic usually have a two-stage cylindrical thread structure, while it is well known that the natural teeth in the posterior region of human beings are mainly multi-rooted. Implants with standardized sizes in traditional forms are usually inconsistent with the shape of the extraction socket, resulting in the gap between the implant and bone tissue after immediate implant surgery, making it difficult to obtain good initial stability. Bone grafting or bone augmentation surgery is more traumatic and expensive, and it also increases the treatment cycle and the risk of potential complications for patients. Most of the traditional implant machine tool processing methods belong to subtractive manufacturing. On the one hand, it will cause material waste and time-consuming. On the other hand, it cannot make products with complex structures. Moreover, the casting process is cumbersome, prone to shrinkage cavities, incomplete casting and other defects, resulting in The mechanical properties are low, which affects the quality of castings.

Therefore, it is necessary to provide a 3D printing method for a personalized porous layer multi-root implant to solve the shortcomings of the existing technology.

Contents of the invention

The purpose of the present invention is to avoid the disadvantages of the prior art and provide a multi-root implant with a porous layer. The 3D printing method of the personalized porous layer multi-root implant has the advantages of high manufacturing precision, shortening the course of implant treatment, reducing implant cost and improving the stability of the root implant.

The above object of the present invention is achieved through the following technical means.

A 3D printing method providing a personalized porous layer multi-root implant includes the following steps,

Step one, scan the object and get the data.

Step 2: Use MIMICS software to separate and reconstruct the data obtained in Step 1 for the scanning area, and obtain the three-dimensional models of the root, socket, crown and dentition area of the subject to be extracted.

Step 3: Use Magic software to edit the 3D model in step 3, digitally design the root, abutment and crown of the implant and adjust the printing parameters as the implant model to be printed.

Step 4: Copy the data of the implant model to be printed in Step 3 to a 3D printer for printing to obtain a personalized porous-layer multi-root implant.

Preferably, the above-mentioned step 1 specifically scans the maxillofacial region of the target with a CBCT scanner to obtain dental and maxillary bone data.

Preferably, in the above step two, the MIMICS software is used to separate and reconstruct the teeth and jaw bone data obtained in step one for the scanned tooth extraction area, so as to obtain the three-dimensional model of the tooth root, extraction socket, crown and dentition area of the object to be extracted.

Preferably, the root in the above step 3 is designed to include a root tip and a root body composed of a porous layer and a solid layer, and the porous layer surrounds the solid layer and is integrally formed with the solid layer.

Preferably, the above-mentioned porous layer is provided with a plurality of interconnected channels, and the number of the root tips is 2-3.

Preferably, the shape of the axial cross-section of the channel is a square, and the perimeter of the square is 500 μm.

Preferably, the abutment designed in step 3 above consists of foundation piles, abutment crowns and wedges respectively matched with the foundation piles.

Preferably, the above-mentioned abutment crown and wedge are independent structures, and the foundation pile is integrally connected above the main body of the root. Opposite circular holes that fit the wedges.

Preferably, the dental crown in the above step 3 is an independent structure, and the bottom of the dental crown is provided with a groove that cooperates with the abutment.

Copy the data of the implant model to be printed obtained in step 4 to the 3D printer, adjust the position of the model, confirm that the 3D printer is working normally, and print.

Preferably, the above-mentioned root and abutment are printed with pure titanium material, and the crown is printed with ceramic material.

A 3D printing method for a personalized porous-layer multi-root implant of the present invention includes the following steps: Step 1, scanning an object to obtain data. Step 2: Use MIMICS software to separate and reconstruct the data obtained in Step 1 for the scanning area, and obtain the three-dimensional models of the root, socket, crown and dentition area of the subject to be extracted. Step 3: Use Magic software to edit the 3D model in step 3, digitally design the root, abutment and crown of the implant and adjust the printing parameters as the implant model to be printed. Step 4: Copy the data of the implant model to be printed in Step 3 to a 3D printer for printing to obtain a personalized porous-layer multi-root implant. The invention has the beneficial effects of directly designing and manufacturing the individualized pseudo-natural dental implant imitating the natural teeth of the target according to the tooth and jaw bone of the target. Through this method, the shape of the implant and the alveolar socket of the object are the same, which can speed up the bone healing speed and improve the initial stability, thereby better simulating the force transmission characteristics of natural teeth and the stress distribution characteristics of tooth roots. The method has the advantages of high manufacturing precision, shortening the course of implantation, reducing the cost of implantation and improving the stability of the root implant.

Description of drawings

The present invention will be further described by using the accompanying drawings, but the content in the accompanying drawings does not constitute any limitation to the present invention.

Fig. 1 is a flowchart of a 3D printing method for a personalized porous layer multi-root implant of the present invention.

Fig. 2 is a schematic diagram of Embodiment 2 of a personalized porous layer multi-root implant of the present invention.

Fig. 3 is a schematic longitudinal sectional view of Embodiment 2 of a personalized porous layer multi-root implant of the present invention.

Fig. 4 is a schematic cross-sectional view of Embodiment 2 of a personalized porous-layer multi-root implant of the present invention.

Fig. 5 is a schematic structural diagram of a personalized porous layer multi-root implant abutment of the present invention.

Figures 1 through 5, including the

root 100,

root tip 110, root body 120, porous layer 121, channel 1211, solid layer 122,

Abutment 200,

Foundation pile 210, foundation crown 220, wedge 230,

Crown 300.

detailed description

The technical solution of the present invention will be further described in conjunction with the following examples.

Example 1.

A 3D printing method for a personalized porous layer multi-root implant, as shown in Figure 1, comprising the following steps:

Step one, scan the object and get the data.

Step 2: Use MIMICS software to separate and reconstruct the data obtained in Step 1 for the scanning area, and obtain the three-dimensional models of the root, socket, crown and dentition area of the subject to be extracted.

Step 3: Use Magic software to edit the 3D model in step 3, digitally design the root, abutment and crown of the implant and adjust the printing parameters as the implant model to be printed.

Step 4: Copy the data of the implant model to be printed in Step 3 to a 3D printer for printing to obtain a personalized porous-layer multi-root implant.

Step 1 is specifically to scan the maxillofacial region of the target with a CBCT scanner to obtain dental and maxillary bone data.

In step 2, MIMICS software is used to separate and reconstruct the tooth and jaw bone data obtained in step 1 of the scanned tooth extraction area, and obtain a three-dimensional model of the tooth root, extraction socket, crown and dentition area of the subject to be extracted.

The root in step three is designed to include a root tip and a root body composed of a porous layer and a solid layer, and the porous layer surrounds the solid layer and is integrally formed with the solid layer.

The porous layer is provided with a plurality of interlinked channels, and the number of the root tips is 2-3.

The shape of the axial cross-section of the channel is a square, and the perimeter of the square is 500 μm.

The abutment designed in step 3 is composed of foundation piles, foundation crowns and wedges respectively matched with the foundation piles.

The abutment crown and wedge are independent structures, and the foundation pile is integrally connected above the main body of the root. The circular hole in which the wedge fits.

The crown in step 3 is an independent structure, and the bottom of the crown is provided with a groove matching the abutment.

Copy the data of the implant model to be printed obtained in step 4 to the 3D printer, adjust the position of the model, confirm that the 3D printer is working normally, and print.

The root and abutment are printed with pure titanium material, and the crown is printed with ceramic material.

The invention has the beneficial effects of directly designing and manufacturing the individualized pseudo-natural dental implant imitating the natural teeth of the target according to the tooth and jaw bone of the target. Through this method, the shape of the implant and the alveolar socket of the object are the same, which can speed up the bone healing speed and improve the initial stability, thereby better simulating the force transmission characteristics of natural teeth and the stress distribution characteristics of tooth roots. The method has the advantages of high manufacturing precision, shortening the course of implantation, reducing the cost of implantation and improving the stability of the root implant.

Example 2.

A 3D printing method for a personalized porous layer multi-root implant, as shown in Figures 1 to 5, comprising the following steps:

(1) Data collection

Scan the maxillofacial region of the target with a CBCT scanner to obtain dental and maxillary data.

(2) Data processing

Use MIMICS software to separate and reconstruct the data obtained in step 1 of the scanned tooth extraction area, and obtain the three-dimensional model of the tooth root, extraction socket, crown and dentition area of the subject to be extracted.

(3) Specific design of personalized multi-root implants with porous layers

Use Magic software to edit the 3D model in step 3, digitally design the root, abutment and crown respectively and adjust the printing parameters, as the implant model to be printed. The specific design of the root, abutment and crown is as follows:

The root is designed to include a root tip and a root body composed of a porous layer and a solid layer, the porous layer surrounds the periphery of the solid layer and is integrally formed with the solid layer. The porous layer is provided with a plurality of interlinked channels, and the root tip is provided with 2-3 channels. Multiple channels run through at angles of 60° and 120°. The shape of the axial cross-section of the channel is a square, and the perimeter of the square is 500 μm. The thickness of the porous layer accounts for 25% of the distance from the edge of the cross-section of the root body to the center point; the vertical height of the root tip accounts for 50% of the vertical height of the root body.

The abutment designed by the abutment consists of a foundation pile, a crown and a wedge respectively matched with the foundation pile. Both the foundation crown and the wedge are independent structures, and the foundation pile is integrally connected above the main body of the root. Along the buccal-lingual direction, the foundation pile has a cylindrical retention channel that matches the wedge, and the diameter of the cylindrical retention channel is 1mm. The abutment crown is provided with two opposite circular holes matching with the wedge along the buccolingual direction. The wedge is a cylinder with a diameter of 1 mm. The outer surface of the foundation pile, the surface of the foundation crown and the surface of the wedge are all frosted structures.

The crown is designed as an independent structure, and the bottom of the crown is provided with a groove that matches the abutment, and the inner surface of the groove is a frosted structure.

(4) 3D printing of personalized porous layer multi-root implant

Copy the data of the implant model to be printed to the 3D printer, adjust the position of the model, confirm that the 3D printer is working normally, and print. The root and abutment are printed with pure titanium material respectively; the crown is printed with ceramic material.

The invention has the beneficial effects of directly designing and manufacturing the individualized pseudo-natural dental implant imitating the natural teeth of the target according to the tooth and jaw bone of the target. Through this method, the shape of the implant and the alveolar socket of the object are the same, which can speed up the bone healing speed and improve the initial stability, thereby better simulating the force transmission characteristics of natural teeth and the stress distribution characteristics of tooth roots. The method has the advantages of high manufacturing precision, shortening the course of implantation, reducing the cost of implantation and improving the stability of the root implant.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that Modifications or equivalent replacements are made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. A kind of 1. 3D printing method of the more root of the tooth planting bodies of personalized porous layer, it is characterised in that：Comprise the following steps,

   Step 1, sweep object, obtain data；

   Step 2, separation reconstruction is carried out to the data that step 1 obtains with MIMICS softwares for scanning area, obtain object plan Pull out teeth roots, the nest that gets a tooth pulled out, corona and the threedimensional model in denture region；

   Step 3, edlin is entered to the threedimensional model of step 3 using Magic softwares, to the root of planting body, base station and corona It is digitized and designs and adjust print parameters, as plantation body Model to be printed；

   Step 4, the data copy of the plantation body Model to be printed in step 3 is printed into 3D printer, obtained individual The property more root of the tooth planting bodies of porous layer.
2. A kind of 2. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 1, it is characterised in that： The step 1 obtains tooth jawbone data particular by the Maxillary region of CBCT scanner scanning targets.
3. A kind of 3. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 2, it is characterised in that： The step 2 carries out separation reconstruction to scanning the tooth jawbone data that the region that gets a tooth pulled out is obtained with MIMICS softwares to step 1, obtains Intend pulling out teeth roots, the nest that gets a tooth pulled out, corona and the threedimensional model in denture region to object.
4. A kind of 4. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 3, it is characterised in that： The root of the step 3 is designed as the root main body for including the tip of a root and being made up of porous layer and solid layer, and porous layer is enclosed in reality Central layer is peripheral and is integrally formed with solid layer.
5. A kind of 5. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 4, it is characterised in that： The porous layer is provided with multiple passages to connect, and the tip of a root is arranged to 2-3.
6. A kind of 6. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 5, it is characterised in that： The passage axial cross section is shaped as square, 500 μm of square Zhou Changwei.
7. A kind of 7. more root of the tooth planting bodies with porous layer according to claim 6, it is characterised in that：The base of the step 3 The base station of platform design forms from foundation pile, respectively with the base hat with foundation pile and chock；

   The base hat and chock are absolute construction, and foundation pile is integrally attached to the top of root main body, and foundation pile has along cheek-tongue direction and wedge The cylindric maintenance duct that son is engaged, base hat are provided with two circular ports that are relative and being engaged with chock along cheek-tongue direction Hole.
8. A kind of 8. more root of the tooth planting bodies with porous layer according to claim 7, it is characterised in that：The tooth of the step 3 It is preced with and absolute construction, the bottom of corona is provided with the groove coordinated with base station.
9. A kind of 9. 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 8, it is characterised in that： By the data copy of the plantation body Model to be printed obtained in the step 4 into 3D printer, modal position is adjusted, really Recognize 3D printer and be in normal work, printed.
10. 10. a kind of 3D printing method of personalized more root of the tooth planting bodies of porous layer according to claim 9, its feature exist In：The root of the tooth and base station are respectively adopted pure titanium material and printed；Described corona is printed using ceramic material.