Patient-Specific Surgical Implant Using Cavity-Filled Approach for Precise and Functional Mandible Reconstruction

Abstract

Mandibular reconstruction is a complicated task because of the complex nature of the regional anatomy. Computer-assisted tools are a promising means of improving the precision and safety of such complex surgeries. The digital techniques utilized in the reconstruction of mandibular defects based on medical data, computer-aided-design approaches, and three-dimensional (3D) printing are widely used to improve the patient’s aesthetic appearance and function, as well as the accuracy and quality of diagnosis, and surgical outcomes. Nevertheless, to ensure an acceptable aesthetical appearance and functional outcomes, the design must be based on proper anatomical reconstruction, mostly done in a virtual environment by skilled design engineers. Mirroring is one of the widely used techniques in the surgical navigation and reconstruction of mandibular defects. However, there are some discrepancies and mismatches in the mirrored anatomical models. Hence, in order to overcome these limitations in the mirroring technique, a novel approach called the cavity-filled technique was introduced. The objective of this study was to compare the accuracy of the newly recommended cavity-filled technique with the widely used mirror reconstruction technique in restoring mandibular defects. A prominent 3D comparison technique was employed in this work, where the resected and the reconstructed mandibles were superimposed to quantify the accuracy of the two techniques. From the analysis, it can be inferred that the cavity-filled technique with a root-mean-square value of 1.1019 mm produced better accuracy in contrast to the mirroring approach, which resulted in an error of 1.2683 mm. Consequently, by using the proposed cavity-filled design, the discrepancy between the reconstruction plate and the bone contour was mitigated. This method, owing to its high precision, can decrease the number of adjustments and the time of surgery, as well as ensure a quick recovery time with better implant tissue in-growth.

Titanium Alloy Implants with Lattice Structures for Mandibular Reconstruction

“…Moreover, computer models can be exported into finite element analysis (FEA) programs to perform mechanical loading simulations and prototyping [ 21 , 23 , 27 , 92 , 101 ]. Such approaches have been used to develop patient-specific conventional fixation plates [ 42 , 80 , 102 , 103 ], as well as a multitude of other surgical implants [ 96 , 104 ].…”

Research on Wireless Power Transfer Method for Intelligent Sensing Device of Non-Directly Buried Distribution Cables

“…As the prevalence of portable electronic products [1][2][3][4], high-performance electric vehicles (EVs) [5][6][7][8][9], and biomedically implanted sensors with rechargeable batteries [10][11][12] increases, the demand for periodic charging has emerged as a significant issue. Most devices continue to depend on traditional wired charging after battery depletion, a process often marked by inconvenience.…”

Estimation of the Influence of the Coil Resistance on the Power and Efficiency of the WPT System

“…Wireless power transfer (WPT) systems are used in many fields, such as electric vehicle charging [6][7][8][9][10][11], implantable medical devices [12][13][14], and consumer electronics [5,15]. WPT is also used in robotic systems [16], communication sets [17,18], and in the Internet of Things (IoT) [16,17].…”