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RU-2861536-C1 - METHOD FOR CREATING ENDODONTIC ACCESS USING DIGITAL NAVIGATION TECHNOLOGIES

RU2861536C1RU 2861536 C1RU2861536 C1RU 2861536C1RU-2861536-C1

Abstract

FIELD: medicine; dentistry. SUBSTANCE: invention can be used to create primary endodontic access during endodontic treatment. Performing cone-beam computed tomography (CBCT) of the maxillofacial area, obtaining a digital impression of the patient's dentition using an intraoral scanner. Loading the CBCT and digital impression data into software for creating surgical templates. Comparing the CBCT and digital impression data. Determining the distance from the roof to the floor of the tooth cavity, obtaining the depth of the pulp chamber, based on the obtained depth, selecting the length of the working part of the bur. Calculating the thickness of the guide template, forming its boundaries with overlap of the clinical equators of adjacent teeth. In the multiplanar reconstruction (MPR) and three-dimensional (3D) reconstruction mode, delineating the boundaries of the pulp chamber on the axial section. Creating a window in the template in accordance with its contours, exporting the 3D model of the template in STL format for printing on a 3D printer. Fixing the printed guide template on the target tooth in the oral cavity and creating endodontic access through the guide window using the selected bur. EFFECT: increasing the accuracy of forming endodontic access, minimising the excision of healthy tooth tissue and eliminating the risk of perforations by individually planning the depth and boundaries of access based on 3D modelling and using a navigation template. 4 cl, 5 dwg

Inventors

  • Khabadze Zurab Sulikoevich
  • Vekhbi Akhmad
  • Dashtieva Marina Iuzbegovna
  • Umarov Adam Iunusovich

Dates

Publication Date
20260505
Application Date
20250627

Claims (4)

  1. 1. A method for creating endodontic access using digital navigation technologies, including performing cone-beam computed tomography (CBCT) of the maxillofacial area, obtaining a digital impression of the patient's dentition using an intraoral scanner, characterized in that the CBCT and digital impression data are loaded into software for creating surgical templates, the CBCT and digital impression data are compared, the distance from the roof to the bottom of the tooth cavity is determined, obtaining the depth of the pulp chamber, based on the obtained depth, the length of the working part of the bur is selected, the thickness of the guide template is calculated, its boundaries are formed with the overlap of the clinical equators of adjacent teeth, in the multiplanar reconstruction (MPR) and three-dimensional (3D) reconstruction mode, the boundaries of the pulp chamber are highlighted on the axial section, a window is created in the template in accordance with its contours, a 3D model of the template is exported in STL format for printing on a 3D printer, then the printed guide template is fixed on target tooth in the oral cavity and create endodontic access through a guide window using a selected bur.
  2. 2. The method according to paragraph 1, characterized in that the software for creating surgical templates is software based on artificial intelligence.
  3. 3. The method according to paragraph 2, characterized in that the RealGuide 5.4.2 software is used.
  4. 4. The method according to paragraph 1, characterized in that a conical turbine bur 876.314.164.100.029 “VladMiva” is used.

Description

Field of technology to which the invention relates The invention relates to medicine, specifically dentistry, and is used to create more effective and minimally invasive access to the pulp chamber. The primary application of this technical solution is dentistry. State of the art Establishing a complete endodontic access is one of the key criteria for successful endodontic treatment. Traditional endodontic access is created by creating an access along anatomical and topographic landmarks using a turbine or step-up handpiece. This does not guarantee full exposure of the pulp chamber or prevent excessive pulp chamber opening, which can lead to loss of the tooth's structural integrity. Errors or improper access creation at this stage of endodontic treatment can lead to complications such as tooth perforation and excessive preparation of hard dental tissue. However, in the modern era of dentistry, cone-beam computed tomography (CBCT) and advances in digital technology have become widely used in various fields of dentistry, allowing for clear visualization and identification of the pulp chamber boundaries. In the study by Garcia-Sanchez A, Mainkar A, Bakhsh K, Sanchez SE, Tadinada A, Chen IP. The use of three-dimensional (3D)-printed guide for identifying root canals in endodontic treatment. J Dent Treat Oral Care. 2020;3(1):104. they used photopolymer navigation templates to create primary access on extracted molars with a certain preparation depth; however, they are unable to prevent the operator/handpiece from over-preparing the pulp floor, which can lead to perforation in the pulp floor area. The disadvantage of the Garcia-Sanchez A et al. method is the inability to control the depth of preparation. The objective of the invention is to develop a method that allows for primary minimally invasive directed endodontic access during endodontic treatment. Disclosure of the essence of the invention The tactical solution is the possibility of therapeutic treatment of a tooth during endodontic treatment by visualizing the boundaries of the pulp chamber using cone-beam computed tomography (CBCT) data and creating a guide template to create precise and minimally invasive access to the pulp chamber. The technical result is the formation of endodontic access taking into account the individual location and depth of the pulp chamber through the use of an individual guide template, which is individually selected and prepared taking into account the anatomical features of the tooth, individualization using a bur with a limited working part, which is ensured by the use of CBCT and a digital impression (scan of the jaw) for the manufacture of the template. Brief description of the drawings Fig. 1 - comparison of CBCT data and digital impression in software. Fig. 2 - measurement of the distance from the roof of the tooth cavity to the enamel border. Fig. 3 - modeling of template boundaries and adaptation of template thickness taking into account the depth to the roof of the pulp chamber and the working part of the bur. Fig. 4 - creation of a window in the template for further preparation of endodontic access. Fig. 5 - final 3D model of the template. Implementation of the invention A method for creating a primary endodontic access using digital navigation technology involves performing a cone-beam computed tomography (CBCT) scan of the patient and taking a digital impression using an intraoral scanner. The CBCT and digital impression data are loaded into software for creating surgical implant guides (RealGuide v5.4.2 CAD+, 3Diemme, Como, Italy). The CBCT and digital impression data are then compared in the software to further define the boundary between the roof and floor of the tooth cavity and create a guide template taking into account the boundaries and depth of the pulp chamber. A final 3D model of the template is then produced and printed on a 3D printer. The printed model is then fixed to the target tooth in the oral cavity for preparation of the endodontic access. The developed digital protocol utilizes digital technologies for more efficient and safe minimally invasive access for creating a primary endodontic access to the pulp chamber. The technical result is achieved through a method for diagnosing and modeling a navigational endodontic guide using digital technologies and CBCT data, which are administered to patients prior to endodontic treatment planning. The essence of the invention is the achievement of minimally invasive and safe endodontic access, which completely eliminates all possible complications during access creation.