Accuracy of 3D printed guide for orbital implant

Abstract

<jats:sec> <jats:title content-type="abstract-subheading">Purpose</jats:title> <jats:p>Extrinsic trauma to the orbit may cause a blowout or orbital fracture, which often requires surgery for reconstruction of the orbit and repositioning of the eyeball with an implant. Post-operative complications, however, are high with the most frequent cause of complications being a mismatch of the position and shape of the implant and fracture. These mismatches may be reduced by computed tomography (CT) based modeling and three-dimensional (3D) printed guide. Therefore, the aim of this study is to propose and evaluate a patient-specific guide to shape an orbital implant using 3D printing.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Design/methodology/approach</jats:title> <jats:p>Using CT images of a patient, an orbital fracture can be modeled to design an implant guide for positioning and shaping of the surface and boundaries of the implant. The guide was manufactured using UV curable plastic at 0.032 mm resolution by a 3D printer. The accuracy of this method was evaluated by micro-CT scanning of the surgical guides and shaping implants.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Findings</jats:title> <jats:p>The length and depth of the 3D model, press-compressed and decompressed implants were compared. The mean differences in length were 0.67 ± 0.38 mm, 0.63 ± 0.28 mm and 0.10 ± 0.10 mm, and the mean differences in depth were 0.64 ± 0.37 mm, 1.22 ± 0.56 mm and 0.57 ± 0.23 mm, respectively. Statistical evaluation was performed with a Bland-Altman plot.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Originality/value</jats:title> <jats:p>This study suggests a patient-specific guide to shape an orbital implant using 3D printing and evaluate the guiding accuracy of the implant versus the planned model.</jats:p> </jats:sec>

The influence of steam sterilization on the deflection of 3D printing shapes

“…The production of prostheses is often expensive and requires complex intraoperative processes. Individual fabrication of implants using 3D-CAD methods allows for precise and anatomical reconstruction in a shorter operating time compared to other conventional techniques [10][11][12][13][14].…”

“…The largest surface area within this scale was found in the MED610 material model. This means that despite the deformations, it is closest to the intended dimensions [14][15][16][17]. The utilization of additive technologies in the production of medical models, both for direct therapeutic purposes and educational purposes, has expanded these individual areas.…”

Verifying the Accuracy of 3D-Printed Objects Using an Image Processing System

“…They found that PolyJet and SLA can meet the required accuracy for clinical applications. Kwon et al [17] studied the accuracy of a 3D-printed patient-specific implant. The shape datasets are extracted from CT images.…”

Verifying the Accuracy of 3D-Printed Objects Using an Image Processing System

“…They found that PolyJet and SLA can meet the required accuracy for clinical applications. Kwon et al [17] studied the accuracy of a 3D-printed patient-specific implant. The shape datasets were extracted from CT images.…”