EP-4734872-A1 - NON-INVASIVE MONITORING OF DENTAL IMPLANT SURGICAL PLACEMENT

Abstract

System and methods to provide accurate and reliable 3D tracking of osteotomy sites using known key structures used during the pre- and intra-operative procedures. Based on the pre-determined 3D position of the implant generated during the planning phase, a known implant 3D position will be available as a reference associated to key structures obtained from, e.g., cone-beam computed tomography (CBCT) and intra-oral scanners (IOS) files. During the surgical procedure, a matching 3D implant placement based on the planned position will favor the restorative procedures, minimizing costs and the need for adjustments.

Inventors

• ALRASHED, Safa M.
• MEIRELLES, Luiz

Assignees

• Ohio State Innovation Foundation

Dates

Publication Date

20260506

Application Date

20240628

Claims (20)

1. 1. A method of monitoring dental implant placement during a surgical procedure, the method comprising: obtaining a pre-operative digital model of the patient’s mouth comprising of oral scan; obtaining a pre-operative CBCT scan data of the patient’s jaws; obtaining an intra-operative fde comprising a digital model of a patient’s mouth, wherein the digital model is captured with the dental surgery implement combined with the alignment device positioned in the patient’s mouth; aligning the pre-operative digital model with the CBCT scan data; aligning the intra-operative file with the file comprising a digital model of a dental surgery implement including the sleeve and the drill bit to generate a digital model of the dental surgery implement positioned in the patient’s mouth; presenting, via a user interface, a three-dimensional (3D) model of the patient’s mouth showing a positioning of the dental surgery implement with the twist section inside the bone in relation to key anatomical structures; and presenting, via a user interface, a three dimensional numerical evaluation of the distance of the dental surgery implement to anatomical structures of interest
2. 2. The method of claim 1, wherein the pre-operative and intra-operative digital models are a three-dimensional (3D) model of the patient’s mouth.
3. 3. The method of claim 2, wherein the pre-operative and intra-operative digital models are a computer-aided design file.
4. 4. The method of claim 1, wherein the dental surgery implement digital model is a three- dimensional (3D) model.
5. 5. The method of claim 4, wherein the dental surgery implement digital model is a computer-aided design file.
6. 6. The method of claim 1 , wherein the dental surgery implement is a dental drill bit with combined sleeve as alignment device.
7. 7. The method of claim 1, wherein the dental surgery implement is a standard dental bit without added alignment features.
8. 8. The method of claim 1, wherein the dental surgery implement is a dental drill bit with embedded alignment features.
9. 9. The method of claim 1, wherein the dental surgery implement is a standalone device to be placed in the osteotomy sites between surgical drills.
10. 10. The method of claim 1, wherein the pre-operative or intra-operative fdes are digital model of the patient’s mouth captured using a scanner for capturing digital data.
11. 11. The method of claim 1, further comprising determining a plurality of first reference points for the dental surgery implement in the intra-operative file, wherein the plurality of first reference points are used to align the intra-operative file with the dental surgery implement including the sleeve and the drill bit.
12. 12. The method of claim 1, wherein the dental surgery implement file is obtained from a database.
13. 13. The method of claim 1, further comprising obtaining subsequent files comprising subsequent scans of a patient’s mouth, wherein the subsequent scans are captured with additional dental surgery implements positioned in the patient’s mouth.
14. 14. The method of claim 12, further comprising virtually aligning the pre-operative file, the dental surgery implement file, and subsequent scans of the patient’s mouth with the dental surgery implement in the patient’s mouth.
15. 15. The method of claim 13, further comprising presenting, via the user interface, a three-dimensional (3D) model of the patient’s mouth showing a positioning of the dental surgery implement and additional dental surgery implements.
16. 16. A computer implemented system for monitoring dental implant placement during a surgical procedure, comprising: a processor; and a memory that stores computer executable instructions that when executed by the processor: receives a pre-operative digital model of the patient’s mouth comprising of oral scan; receives a pre-operative CBCT scan data of the patient’s jaws; receives intra-operative file comprising a digital model of a patient’s mouth, wherein the digital model is captured with the dental surgery implement combined with the alignment device positioned in the patient’s mouth; receives a file comprising of a digital model of a dental surgery implement including the sleeve and the drill bit; aligns the pre-operative digital model with the CBCT scan data; aligns the intra-operative file with the file comprising of a digital model of a dental surgery implement including the sleeve and the drill bit to generate a digital model of the dental surgery implement positioned in the patient’s mouth; presents, via a user interface, a three-dimensional (3D) model of the patient’s mouth showing a positioning of the dental surgery implement; and presents, via a user interface, a three dimensional numerical evaluation of the distance of the dental surgery implement to anatomical structures of interest.
17. 17. The system of claim 16, wherein the pre-operative and intra-operative digital models are a three-dimensional (3D) model of the patient’s mouth.
18. 18. The system of claim 16, wherein the pre-operative and intra-operative digital models are a computer-aided design fde.
19. 19. The system of claim 16, wherein the dental surgery implement digital model is a three-dimensional (3D) model.
20. 20. The system of claim 16, wherein the dental surgery implement is a dental drill bit with combined sleeve as alignment device.

Description

NON-INVASIVE MONITORING OF DENTAL IMPLANT SURGICAL PLACEMENT CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims priority to U.S. Provisional Patent Application No. 63/510,729, filed June 28, 2023, entitled “NON-INVASIVE MONITORING OF DENTAL IMPLANT SURGICAL PLACEMENT,” the disclosure of which is expressly incorporated herein by reference in its entirety. BACKGROUND [0002] Dental implants are widely used to replace missing teeth and/or to provide support for artificial teeth or dental prostheses. Dental implants are generally surgically placed into the jawbone and integrated with the surrounding bone tissue to form a secure foundation for dental restoration. Traditionally, dental implants have been made of biocompatible materials, such as titanium, which are capable of osseointegrating with the patient’s bone. The current clinical practice to track implant placement during surgery utilizes X-ray radiation to generate two-dimensional images of the surgical site, which can lead to frequent interruptions of the surgical procedure for imaging, higher likelihood of misinterpretation of the 2D X-ray images, and increased radiation exposure for the patient. SUMMARY [0003] System and methods to provide accurate and reliable 3D assessments of osteotomy sites using known key structures used during the pre- and intra- operative procedures as reference, according to various implementations. Based on the pre-determined 3D position of the implant generated during the planning phase, a known implant 3D position will be available as a reference associated to key structures obtained from cone-beam computed tomography (CBCT) and intra-oral scan files. During the surgical procedure, a 3D implant position will be generated based on tracking features added to surgical drills, embedded on surgical drills, or as a standalone device to be placed in the osteotomy sites between surgical drills, which will favor the restorative procedures, minimizing costs and the need for adjustments. [0004] In accordance with aspects of the present disclosure, a method of monitoring dental implant placement during a surgical procedure is disclosed. The method includes obtaining a first file comprising a first preoperative digital model aligned on the patient’s CBCT; obtaining a second file comprising of a digital model captured with the dental surgery implement positioned in the patient’s mouth; aligning the first file preoperative digital model , or CBCT scan, with the second file to generate a digital model of the dental surgery implement positioned in relation to the planned implant position; and presenting, via a user interface, a virtual position of computer- aided file of the used drill will automatically simulated in a three-dimensional (3D) model of the patient’s scans showing a positioning of the dental surgery implement in relation to the anatomical structure(s) of interest. [0005] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. BRIEF DESCRIPTION OF THE DRAWINGS [0006] The foregoing summary, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the embodiments, there is shown in the drawings example constructions of the embodiments; however, the embodiments are not limited to the specific methods and instrumentalities disclosed. In the drawings: [0007] FIG. l is a block diagram of a system for non-invasively monitoring the placement of dental implants during surgery, according to some implementations; [0008] FIG. 2 is a flow diagram of a process for non-invasively monitoring the placement of dental implants during surgery, according to some implementations; [0009] FIG. 3 illustrates a representation of components used to generate alignment and measurements of a dental surgical implement; [0010] FIG. 4 shows example of oral scan used during surgery to provide a position of the dental surgical implement using a virtual drill file; [0011] FIGS. 5 A and 5B illustrate an example step-wise procedure showing a sequence of drills; [0012] FIG. 6 illustrates a preoperative digital model for the patient’s mouth. [0013] FIG. 7 illustrates an example of cone-beam computed tomography (CBCT) data; [0014] FIG. 8 illustrates alignment of preoperative digital model to the CBCT data. [0015] FIG. 9 illustrates the inferior alveolar nerve (IAN) and teeth identified from CBCT image data of FIG. 7 [0016] FIG. 10 illustrates an example of digital model obtained during the surgery with a first drill. [0017] FIG. 11 illustrates an example of a digital model obtained during surgery with a first drill aligned with preoperative digital model