Augmented reality for narrow area navigation in jaw surgery: Modified tracking by detection volume subtraction algorithm

Abstract

Background and Aim: Jaw surgery based on augmented reality (AR) still has limitations in terms of navigating narrow areas. Surgeons need to avoid nerves, vessels, and teeth in their entirety, not just root canals. Inaccurate positioning of the surgical instrument may lead to positional or navigational errors and can result in cut blood vessels, nerve channels, or root canals. This research aims to decrease the positional error during surgery and improve navigational accuracy by reducing the positional error.Methodology: The proposed 2D/3D system tracks the surgical instrument, consisting of the shaft and the cutting element, each part being assigned a different feature description.In the case of the 3D position estimation, the input vector is composed of image descriptors of the instrument and the output value consists of 3D coordinates of the cutter.Results: Sample results from a jawbone-maxillary and mandibular jaw-demonstrate that the positional error is reduced. The system, thus, led to an improvement in alignment of the video accuracy by 0.25 to 0.35 mm from 0.40 to 0.55 mm and a decrease in processing time of 11 to 14 frames per second (fps) against 8 to 12 fps of existing solutions.Conclusion: The proposed system is focused on overlaying only on the area to be operated on. Thus, this AR-based study contributes to accuracy in navigation of the deeper anatomical corridors through increased accuracy in positioning of surgical instruments.

Immersive Augmented Reality Applications in Jaw and Knee Replacement Surgery: Accuracy and Processing Time Results

“…Basnet et al, (2018) proposed an augmented reality-based surgery system that improves navigation accuracy by eliminating noise and obstruction when the implant is placed about the jawbone to be cut or drilled. Furthermore, in jaw surgery, the AR system for narrow-area navigation has been proposed to reduce positional error within the surgery and increase navigational accuracy by positional error reduction (Budhathoki et al, 2020). In addition, Murugesan et al (2018) proposed a system applied in Oral and Maxillofacial Surgery (OMS) focusing on AR regarding geometric accuracy.…”

“…With other proposed systems by (Murugesan et al (2018), (Shrestha et al, 2021), (Budhathoki et al, 2020), (Bayrak et al, 2020), and (Manohar et al, 2020) the CT data of the patients were taken and then have been segmented. Subsequently, a hierarchy model is created.…”

“…Basnet et al, (2018) aimed to remove the geometric error and reduce the probability of incorrect pose selection for enhancing model overlay with registration accuracy using the Rotational Matrix and Translation Vector (RMaTV) algorithm. Budhathoki et al, (2020) modified the ICP algorithm to refine the pose overlaid on the surgical region in an iterative process to construct an accurate 3D form. The RMaTV algorithm improves precision by eliminating geometric errors.…”

Development of Simulation Methods in Biomedical Sciences - From Phantoms to Virtual Patients

“…The concept of AR has found wide application in the arts, gaming industry, architecture, daily life, industrial design, navigation, auto industry, archeology. With increased need for catheterization and endoscopic interventions, AR has found an important role in many medical disciplines (36) (Figure 5) (37)(38)(39). In dental education, it is increasingly used in everyday clinical practice and education.…”

Augmented reality for orthopedic and maxillofacial oncological surgery: a systematic review focusing on both clinical and technical aspects

“…They compared the navigation method to physician's experience and concluded that AR guidance had better outcomes in terms of mean target error and mean angle error. Budhathoki et al (2020) emphasized the use of AR navigation to visualize deep-seated anatomy, narrow areas and to provide positioning of surgical instruments to avoid positioning error complications during jaw surgery. Moreover, Gao et al (2019) employed AR in mandibular split osteotomy.…”