Edentulous jaw navigation system and method

Abstract

The invention belongs to the technical field of medical instruments, and discloses an edentulous navigation system and method, and the system comprises an edentulous tracking module which is connected with a workstation module and is used for cooperating with the oral cavity of a patient to track the movement of the patient; and the mobile phone positioning module is connected with the workstation module and is used for drilling the implant nest in the oral cavity of the patient, releasing cooling water and the like. And the workstation module is connected with the mobile phone positioning module and the edentulous jaw tracking module, and is used for receiving infrared signals of the edentulous jaw tracking module and the mobile phone positioning module, obtaining the positions of the positioner and the reference plate in an actual coordinate system through calculation, and performing real-time tracking. According to the invention, extra accessories made by technicians are not needed, so that the planting treatment period is effectively shortened; the connecting assembly for navigation is supported by the implant implanted in the jaw bone in a pure rigid mode instead of mucous membrane support adopted by a guide plate, the positioning precision is higher, and the success rate of edentulous jaw cases is higher.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an edentulous jaw navigation system and method. Background technique [0002] At present, in recent decades, oral implant restoration technology has become a reliable technology for the treatment of partial or complete dentition. Before the implant surgery, the doctor needs to observe the bone mass and anatomical structure of the edentulous area by observing the cone beam CT (CBCT), so as to determine the treatment plan, determine whether the implant can be repaired and the diameter and length of the implant. [0003] However, due to the limitation of clinician experience, the deviation of naked eye estimation, the existence of technical sensitivity of free-hand implantation, and the doctor's operation by free hand, it is easy to appear that the actual implant position is inconsistent with the ideal implant position, resulting in nerve and blood vessel implant...

AI Technical Summary

Problems solved by technology

The technology of dynamic surgical navigation using natural teeth to retain navigation equipment accessories such as reference plates and registration devices has been relatively mature, but for edentulous jaws, there is still no good solution for fixing reference plates and registration devices

It has been reported in the literature that there are mucosa-supported marking points and intracranial marking points, which are either unstable or traumatic; in recent years, Israel’s IGI navigation system has developed a navigation fixation device for the edentulous mandible. That is, a temporary intraosseous implant is implanted in the central area of ​​the alveolar bone and the bilateral molar area to support the registration space positioning device. Temporary implants are prone to damage to the inferior alveolar nerve and cannot be widely used

The X-guide system in the United States implants three titanium nails to support the tracking device in the molar pad area, but this method has problems such as inconvenient operation in the posterior area and easy injury to the inferior alveolar nerve.

The ImplantNav navigation system in Australia uses a temporary implant to support the tracking device, but the temporary implant may occupy an edentulous surgical site, that is, the distribution and arrangement of other implant positions need to avoid the temporary implant, and at the same time May increase the financial burden on patients

[0005] 1. The current navigation fixation device needs to implant a temporary intraosseous implant in the midpoint of the lower anterior teeth area and the bilateral molar area to support the tracking device, which is easily limited by the vertical bone volume in the posterior teeth area. When the patient's mandibular alveolar When the bone is severely resorbed, the remaining available bone is difficult to complete the implantation of temporary implants in the bone; at the same time, there are important nerve and blood vessel structures around the bilateral molar area, and there is a certain risk of implantation

[0006] 2. When the patient's mouth opening is not good, it is difficult to implant temporary implants in the molar area, which will affect the follow-up operation;

[0007] 3. In the prior art, after the intraosseous temporary implant is implanted, it is necessary to make a model of the mandible, reproduce the model containing the temporary implant type, and arrange the teeth on the model. Errors in the model and tooth arrangement are prone to occur during the dental process, which affects the subsequent registration operation, and operations such as model reproduction and tooth arrangement greatly increase the chairside operation time. At the same time, tooth arrangement requires high technical requirements for doctors;

[0008] 4. In the prior art, after the tooth arrangement of the model is completed, the corresponding connecting plate needs to be fixed on the temporary implant model with adhesive, and the reference plate and the connecting plate are further connected through the adhesive, so as to complete the marking in the model The production of the device, and then instructing the patient to wear the marking device for CBCT shooting, the process takes a long time and the steps are cumbersome, and the marking device may be loose during the CBCT shooting process, and the patient feels more discomfort

[0010] 6. An intraosseous temporary implant is implanted at any position of the jaw to support the tracking device. The disadvantage is that the amount of bone in the edentulous jaw is very limited, and the temporary implant may occupy an implant site, that is, other implants. Implants may not be implanted in the best position, and the price of temporary implants is also high, which will increase the financial burden of patients

[0012] 1. Due to the long period of tooth loss in edentulous patients and the limited amount of alveolar bone, it is necessary to analyze and measure the amount of alveolar bone before surgery to find a suitable site for temporary implant placement. Not all edentulous patients are One intraosseous temporary implant can be implanted in the midpoint of the lower anterior teeth area and the bilateral molar area respectively. The existing technology has certain requirements for the bone mass of the patient's operation area;

[0013] 2. After the alveolar bone volume is satisfied, one intraosseous temporary implant can be implanted in the midpoint of the lower anterior tooth area and the bilateral molar area respectively. In order to avoid the temporary implant affecting the operation, the intraosseous temporary implant The body needs to be located behind the implant site in the posterior region, and the current navigation fixation device still has certain requirements for the patient's mouth opening;

[0014] 3. For edentulous cases, due to the lack of dentition, the navigation device cannot be supported by teeth. The navigation device is fixed by temporary implants, connecting plates and reference plates, and the connecting plates are located on the lingual and palatal side. Easy to hinder tongue movement

When the patient wears the navigation device for CBCT shooting or during the actual operation, the navigation device is easily pressed by the tongue, and the connection is loose or slightly shifted, which affects the accuracy of the navigation. If the device is slightly displaced, the operator cannot observe the displacement of the navigation device in time, resulting in an increased risk of implant surgery

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