A method and device for determining the planting position of a zygomatic implant based on a three-dimensional model

Abstract

The present application provides a method and device for determining the implant position of the zygomatic implant based on a three-dimensional model. The method first determines the implantation point of the zygomatic implant according to the three-dimensional reconstruction model of the skull, and then combines the zygomatic model on the side corresponding to the implantation point to determine Determine the implant position and model of the zygomatic implant, so that there is at least 1mm of bone surrounding the zygomatic implant, and the maximum BIC can be obtained in the zygomatic bone. The method is efficient, reproducible, and can be personalized Determine the placement of zygomatic implants.

Description

technical field [0001] The present application belongs to the field of image processing, and in particular relates to a method and device for determining the planting position of a zygomatic implant based on a three-dimensional model. Background technique [0002] In the field of oral implantation, the steps of implantation generally include implanting an implant in the alveolar bone, and then installing a prosthesis (ie, a denture) on the implant through an abutment, thereby restoring the patient's oral function. If the maxillary alveolar bone is insufficient or the maxilla is defective and conventional implant restoration cannot be performed, zygomatic implants can be selected as the basis for implant restoration. The so-called zygoma implant (Zygoma Implant) refers to implanting the zygoma implant into the corresponding side of the zygoma through the mouth, and achieving implant retention through early bone contact and long-term osseointegration between the zygoma implant...

AI Technical Summary

Problems solved by technology

However, different scholars have different cognitions on the position of the piercing point on the cheekbone. At present, there is no recognized unified point

[0004] The existing design method of determining the position of the zygomatic implant by two points has at least the following problems: (1) The implant design is based on the fixed implantation point and the penetration point corresponding to the anatomical landmarks, ignoring the shape of the zygomatic bone of each patient. , the position of the zygomatic bone relative to the maxilla, and the specificity of the shape of the maxilla. For different patients, the same standard is used to design, and the final design is often not the largest BIC design, and it is easy to cause the zygomatic implant to invade around the zygomatic bone. (2) Failure to consider that there should be at least 1 mm bone thickness around the zygomatic implant to form effective osseointegration, resulting in the inability to guarantee the long-term stability of the zygomatic implant; (3) Mainly relying on artificial Complete the design plan, and different designers often lead to design differences due to differences in experience, resulting in poor reproducibility of the preoperative design for the same patient, and low efficiency of manual measurement design; (4) preoperatively use a fixed anatomy On the one hand, it does not consider the anatomical specificity of different patients; on the other hand, it makes the postoperative prosthesis production process relatively passive, and the prosthetist needs to determine the implant placement point according to the fixed implant placement point. Design the restoration, which is not friendly to the design of the restoration

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