3D printed micro-implanting nail guide plate and design method thereof

Abstract

The invention discloses a 3D printed micro-implanting nail guide plate and a design method thereof. The guide plate comprises a tooth surface retention plate, a gingiva retention plate, a micro-implanting nail implanting hole, and a handle guide pipeline. According to the design method, CBCT jaw bone data, a three-dimensional dentition model, and micro-implanting nail data obtained by microCT scanning are integrated together, so that the design method is more accurate than a method only using jaw bone data or micro-implanting nail data obtained without accurate scanning. According to the design method, an implantation site and an implantation direction of a micro-implanting nail are determined simultaneously, so that the implantation of the implanting nail is consistent with a design plan,the implantation accuracy is improved, and the safety during the implantation process is ensured to the maximum extent. The micro-implanting nail guide plate is divided into two, the problem that taking-out of the guide plate is relatively difficult after implanting the micro-implanting nail is solved, a metal ligature wire commonly used in the clinic is used for ligature and fixation, and thereby taking-out is relatively convenient. Finally, the design of the micro-implanting nail guide plate is simple and easy to implement, the micro-implanting nail guide plate can be popularized in the clinic, and the problem of touching the tooth root during the implantation process of the micro-implanting nail is avoided.

Description

【Technical Field】 [0001] The invention relates to a guide plate for orthodontics, in particular to a 3D printed micro implant nail guide plate and a design method thereof. 【Background technique】 [0002] Implant anchorage is to use the biocompatibility of titanium to be implanted into the alveolar bone to form part or all of the bone fusion to withstand the corrective force and achieve the purpose of strengthening the anchorage. Because the implant anchor antibody basically does not move in the alveolar bone, and the patient's high degree of cooperation is not required, the implant anchor antibody has been rapidly developed and spread since its clinical application in 1999. More and more orthodontists continue to try to use implants as a branch antibody for moving teeth, so that the treatment results do not have to depend on the cooperation of the patient, and they have succeeded in the treatment of difficult cases where the conventional methods cannot achieve satisfactory result...

AI Technical Summary

Problems solved by technology

However, it is still based on two-dimensional images, and there is still no accurate and reliable standard for determining the position and direction of the implantation point. Once the position judged by the doctor is inappropriate or the implantation method is not selected properly, repositioning and re-shooting are required. It may even take multiple X-rays to determine the best implant position, which is time-consuming and labor-intensive, but increases the cost of treatment

[0009] 3. At present, scholars have used CBCT to reconstruct the shape of teeth and jaws, and designed and produced micro-implant surgical guides to guide the implantation of micro-implants. However, because CBCT still cannot reconstruct the accurate shape of teeth and gums, the stability and accuracy are insufficient.

[0010] 4. At present, there is no design and production system based on three-dimensional images that is specially applied to the implantation of orthodontic micro-implants

To sum up, the three-dimensional guide plates for orthodontic micro-implant implantation published at home and abroad are divided into two categories: one uses the Simplant system, this method relies on foreign processing and design, the cost is high, the production cycle is long, and it is used for orthodontics. There is still room for improvement in the implantation of deformed and micro-implants, and no better improvement plan has been proposed yet; the other is that domestic scholars use a series of related image processing and design software to design and laser rapidly form the required guide plate. This method draws on the production process of the implant guide plate for dental implants. On the one hand, the process of image acquisition and design is complicated, and multiple 3D image processing software is required. Scanning three-dimensional images, and using external markers for overlapping registration, there is an impact of registration accuracy on the accuracy of guided implantation, which increases errors, complicates the manufacturing steps of the guide plate, and fails to solve the problem of guide plate during implantation. Sufficient Retention and Guidance Issues

[0011] 5. At present, when making a virtual micro-implant implantation plan, previous studies can only use virtual cylinders to represent the micro-implant and its implantation direction, and cannot show the actual size of the micro-implant in the bone. Positional relationship with adjacent roots

At present, the existing foreign molding software systems only include three-dimensional information of dental implants. Most of the dental implants are columnar with a large diameter, while the orthodontic micro-implants are small in diameter and mostly cone-shaped. Therefore, the existing Orthodontic micro-implants can be represented by the three-dimensional data of implants. Only through a software system that includes digital virtual micro-implant images of several orthodontic anchorage micro-implants commonly used in clinical practice, can the relationship between micro-implants and dental implants be more accurately determined. The positional relationship between the three-dimensional anatomical structures of the jaw, and formulate a more reasonable plan for simulating the direction and depth of implant placement

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