The sensitivity of radiomic features to several confounding factors, such as reconstruction settings, makes clinical use challenging. To investigate the impact harmonized image reconstructions on feature consistency, a multicenter phantom study was performed using 3-dimensionally printed inserts reflecting realistic tumor shapes and heterogeneity uptakes. Methods: Tumors extracted from real PET/CT scans patients with non-small cell lung cancer served model for three inserts. Different...

Abstract Several new systems for three-dimensional (3D) surface imaging of the face have become available to assess changes following orthognathic or facial surgery. Before they can be implemented in practice, their reliability and validity must established. Our aim, therefore, was study intra- inter-system 3dMD (stereophotogrammetry), Artec Eva Space Spider (both structured light scanners). Intra- reliability, expressed root mean square distance, determined by scanning a mannequin’s head...

<h3>Importance</h3> In acetabular fracture surgery, achieving an optimal reconstruction of the articular surface decreases risk osteoarthritis and subsequent need for total hip arthroplasty. However, no one-size-fits-all osteosynthesis plate is available owing to differences in patterns variations pelvic anatomy. Currently, plates be manually contoured intraoperatively, often resulting inadequate reduction fixation fractured segments. <h3>Objective</h3> To determine feasibility accuracy a...

Biomechanical complications, such as stress shielding, bone resorption, and reconstruction failure, are prevalently associated with solid titanium mandible plates. This study evaluates the potential of metamaterial designs porous gyroid microarchitectures, to enhance biomechanical stimulation mitigate these complications. A novel plate is compared plates, both patient-specifically designed fabricated from Ti6Al4 V alloy. Stress shielding assessed through photoelasticity experiments validated...

Zygomatic implants are used in patients with maxillary defects to improve the retention and stability of obturator prostheses, thereby securing good oral function. Prosthetic-driven placement zygomatic is even difficult for experienced surgeons, a free-hand approach, deviation from preplanned implant positions inevitable, impeding immediate implant-retained obturation. A novel, digitalized workflow surgical planning was 10 patients. Maxillectomy performed 3D-printed cutting, drill guides...

The aim of this study was to introduce a complete 3D workflow for immediate implant retained prosthetic rehabilitation following maxillectomy in cancer surgery. consists virtual surgical planning tumor resection, zygomatic placement, and an implant-retained prosthetic-obturator fit the planned outcome situation loading.In study, resection maxilla, followed by guided placement 10 implants, using custom cutting drill/placement-guides, performed on 5 fresh frozen human cadavers. A...

Abstract Objectives In case of surgical removal oral squamous cell carcinomas, a resection mandibular bone is frequently part the treatment. Nowadays, such resections include application 3D virtual planning (VSP) and guided surgery techniques. this paper, current methods for VSP leads optimisation workflow, patient‐specific guides implants are reviewed. Recent findings Current enable multi‐modality fusion images. This images not restricted to specific software package or workflow. New...

When the application of a free vascularised flap is not possible, segmental mandibular defect often reconstructed using conventional reconstruction plate. Mechanical failure such reconstructions mostly caused by plate fracture and screw pull-out. This study aims to develop reliable, mechanically superior, yet slender patient-specific that reduces due these causes.Eight patients were included in study. Indications as follows: fractured (2), loosened screws (1) primary continuity (5). Failed...

Summary: The face is the initial feature used to judge gender in public spaces; it also a source of significant dysphoria. Surgical techniques are available for non-cisgender male patients who desire more masculine by augmenting certain features change bony framework skull. Augmentation using virtually designed patient-specific polyetheretherketone implants has now become widely applied method maxillofacial surgery. When designing augmentation, three-dimensional (3D) reference or template...

Total joint replacement (TJR) with a prosthesis can be indicated for patients severe temporomandibular (TMJ) dysfunction. Surgical accuracy is necessary correct translation of the preoperatively predicted functional outcome, wear, and biomechanical behaviour patient-specific TMJ-TJR prosthesis. This study describes first clinical applications according to Groningen principles (G-TMJ-TJR), which was developed validated in prior human cadaver test study. The aim this validate placement...

Over the past decade, demand for three-dimensional (3D) patient-specific (PS) modelling and simulations has increased considerably; they are now widely available generally accepted as part of patient care. However, specificity current PS designs is often limited to this patient-matched fit lacks individual mechanical aspects, or parameters, that conform specific patient's needs in terms biomechanical acceptance. Most models mandible, e.g., finite element analyses (FEA), used design...

For patients who suffer from severe dysfunction of the temporomandibular joint (TMJ), a total replacement (TJR) in form prosthesis may be indicated. The position centre rotation TJRs is crucial for good postoperative oral function; however, it not determined patient-specifically (PS) any current TMJ-TJR. aim this study was to develop 4D-workflow ascertain PS mean axis rotation, or fixed hinge, that mimics patient's specific physiological mouth opening. Twenty healthy adult were asked...

Templates aim to facilitate implant placement in the prosthetically preferred position. Mucosa-supported and bone-supported templates are commonly used edentulous maxilla. In atrophic maxilla (Cawood V VI), however, these can be easily displaced due a lack of supportive tissues, even cases where anterior sites offer sufficient bone for placement. To assist positioning stabilisation, we designed template that utilises nasal aperture as fulcrum create forced exclusive fit. The this study was...

Facial asymmetry is defined as a bilateral difference between facial components. Correction, often desired by the patient, can be performed with aim of bone born patient-specific solid implants designed using 3D CAD software. This treatment embedded in daily practice today's healthcare. However, an analysis implant's accuracy placement has not been reported. case series describes aesthetic manufactured out polyether-ether-ketone (PEEK). The was based on postoperative (cone beam) computed...

This study aims to determine patient forehead aesthetics satisfaction after conservative treatment of non-dislocated and dislocated anterior wall frontal sinus fractures. Prospectively, patients older than 15 years age with a fracture, treated conservatively between the period 2010–2020, were analysed. The Face-Q questionnaire was used assess satisfaction, fracture dimensional properties measured using computed tomography. results compared matched non-fractured control group. mean total...

Abstract Introduction Several new systems of three-dimensional (3D) surface imaging the face have become available to assess changes following orthognathic or facial surgery. Before they can be implemented into practice their reliability and validity must established. Our aim was therefore study 3dMD (stereophotogrammetry), Artec Eva Space Spider (both structured light scanners) regarding intra- inter-system validity. Material Methods Intra- expressed in root mean square (RMS) distance...