Publications by authors named "Alexander Gaggl"

Purpose: Computer-aided design (CAD) and computer-aided manufacturing (CAM) techniques have paved the way for single-step resections and cranio-orbital reconstructions with patient specific implants in spheno-orbital tumors. Here, we present our interdisciplinary maxillofacial and neurosurgical workflow and a case series of patients treated with this integrated approach.

Methods: Patients, who underwent single-step resection of benign spheno-orbital tumors and cranio-orbital reconstruction with polyetheretherketone (PEEK) patient specific implants (PSI) from 2019 to 2024 in our institution were included.

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Article Synopsis
  • Defects in the maxillary and mandibular alveolar ridges are common, and the gold standard treatment involves reconstructing these areas with microvascular bone grafts followed by dental rehabilitation.
  • A study analyzed the quality of life (QoL) of 58 patients post-reconstruction, finding that those with malignant diseases and osteoradionecrosis reported poorer oral health-related QoL (OHrQoL) scores compared to those with benign diseases or cleft palate.
  • Patients using implant-supported prostheses had the highest QoL scores, while those with removable dentures or no prosthetics had the lowest, indicating that both the type of underlying condition and the type of prosthetic used significantly affect QoL after treatment.
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Background And Objectives: 3-Dimensional (3D) printing has become a common tool to aid implant molding for cranioplastic surgery of large skull defects. Until now, 3D printing of cranial implants itself has not been used, mainly because of medicolegal concerns. With a 3D printer developed for printing medical applications and with implant-grade polyetheretherketone (PEEK) filament available, we established a workflow (in compliance with medical device regulations) to 3D print cranial implants for cranioplastic surgery directly at the point of care (POC).

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Ventriculoperitoneal (VP) shunt placement, essential for managing hydrocephalus, often risks catheter malpositioning, especially in patients with small ventricles. We present a novel technique combining neuronavigation with intraoperative cone-beam computed tomography using the BrainLab system and Loop-X mobile imaging unit. This approach enables real-time verification of catheter placement by integrating preoperative MRI data with intraoperative CT imaging.

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: Defects of the ascending ramus of the mandible, including the condylar head and neck or the whole temporomandibular joint (TMJ), are difficult to reconstruct. Reconstruction is mainly based on the use of alloplastic joint prosthesis, costochondral grafting, distraction osteogenesis of the dorsal part of the mandibular ramus, or osseous microvascular flaps of various origin. With the objective of developing a method that overcomes the restrictions of these methods, we recently introduced a sequential chimeric flap consisting of a lateral femoral condyle flap (LFC) and deep circumflex iliac artery flap (DCIA) for reconstruction of up to half of the mandible and the condylar head and neck.

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: Dental rehabilitation after extended tumour resection and jaw reconstruction is challenging. The present study aimed to report the prosthetic outcome and quality of life (QoL) in patients with head and neck cancer (HNC) after microvascular alveolar ridge reconstruction. : The prosthetic outcomes of all consecutive patients with HNC who underwent microvascular alveolar ridge reconstruction at the University Hospital Salzburg between 2011 and 2018 were investigated.

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Article Synopsis
  • The paper discusses the complexities of microvascular reconstruction for the orbit and nearby areas, emphasizing the importance of a checklist for reconstructive surgeons.
  • It is based on a literature review of case series and reports, alongside the author's extensive experience in the field.
  • A holistic approach is proposed where both patient-related factors and defect-related considerations are crucial in choosing the right reconstructive method, alongside the introduction of new technologies.
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(1) Background: The current landscape of midface reconstruction is marked by ongoing evolution, with notable advancements in surgical techniques, microvascular procedures, and the implementation of multidisciplinary approaches, all of which have significantly enhanced both functional and aesthetic outcomes. Conventionally, microvascular anastomoses for free flaps in midfacial reconstruction have been executed using cervical vessels. However, this approach necessitates neck access, resulting in extraoral scars and a substantial pedicle length.

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The reinnervated gracilis muscle free flap represents a workhorse of facial reanimation. This procedure is carried out secondarily to parotid resections, due to advanced tumors that spread to the surrounding structures. Finding recipient vessels might be problematic if other reconstructive procedures are needed to address the defects.

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(1) Background: Medication-related osteonecrosis of the jaws (MRONJ) is an adverse drug reaction characterized by progressive bone disruption and necrosis in the mandibular and/or maxillary bones. It occurs in individuals who have received antiresorptive drugs without prior radiotherapy. Since its first reported cases in the USA in 2003, extensive literature has emerged worldwide, leading to significant advancements in understanding MRONJ's pathogenesis and management.

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Multiple mandibular fractures with condylar involvement are challenging to treat. This article presents a series of steps to simplify the treatment and improve the outcomes in open reduction and internal fixation of multiple mandibular fractures with condylar involvement. Four new elements are identified: three-dimensional printing, model surgery, Kirschner wires to manipulate the segments in condylar fractures, and a top-to-bottom sequence.

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Article Synopsis
  • - Extended maxillectomies often require complex surgical planning to ensure good functional and esthetic results, as traditional single-flap methods may not provide enough tissue.
  • - A case study discusses the use of a gracilis muscle free flap in a 55-year-old man who faced reconstruction challenges after a maxillectomy for fibrosarcoma, particularly after initial flaps partially failed due to complications.
  • - The gracilis flap was successfully used to fill a complex defect in the orbit and oral cavity, sealing off areas and leading to a stable outcome with no complications after 6 months, suggesting it may be beneficial for both salvage and primary reconstructions.
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Background: Defects of the temporomandibular joint (TMJ) are often difficult to be reconstructed in the correct dimensions and function. This preliminary study aims to describe a novel technique of condylar reconstruction with a microvascular flap in case of deforming arthrosis of the TMJ: condylar capping.

Patients And Methods: Four patients between 22 and 62 years old-three females and one male-with severe unilateral arthrosis of the TMJ underwent condylar capping.

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Purpose: The medial femoral trochlea flap has been described as a method of scaphoid proximal pole nonunion reconstruction when the proximal pole is deemed nonsalvageable. The lateral femoral trochlea (LFT) is an alternative donor site providing a comparable vascularized convex osteochondral flap. We describe the technique and outcomes of our first 17 cases of LFT flap reconstruction of the proximal scaphoid pole with a minimum follow-up of 14 months.

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Different surgical techniques are available to adequately correct the primary cleft lip deformity; however, when compared, none of these techniques have proven superior with regard to achieving optimal aesthetic results. Thus, the aim of this retrospective study was to assess the nasolabial appearance in patients with unilateral cleft lip and palate (UCLP) at age five with reference to two techniques for primary cleft lip repair used in our service: Pfeifer's wave-line procedure and Randall's technique. A modified Asher-McDade Aesthetic Index was applied to appraise the nasolabial area by means of 2D photographs of non-syndromic five-year-old patients with a UCLP.

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Background: It is anticipated that in due course the burden of emergency care due to COVID-19 infected patients will reduce sufficiently to permit elective surgical procedures to recommence. Prioritizing cleft/craniofacial surgery in the already overloaded medical system will then become an issue. The European Cleft Palate Craniofacial Association, together with the European Cleft and Craniofacial Initiative for Equality in Care, performed a brief survey to capture a current snapshot during a rapidly evolving pandemic.

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Article Synopsis
  • - The study investigated the cause of idiopathic condylar resorption by looking at how low estrogen levels and mechanical stress affect the temporomandibular joints (TMJ) in rabbits after ovariectomy.
  • - Female rabbits were split into two groups: one underwent ovariectomy (OVX) and the other did not (non-OVX), and tests were conducted to assess bone resorption using various imaging and staining techniques.
  • - Results showed that the OVX group experienced significantly greater and earlier bone resorption in the TMJ, indicating that low estrogen levels lead to increased bone loss in that area.
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In cases of large defects of the limbs, post-traumatic deformity and disability can have devastating effects on patients' quality of life. The purpose of this report is to describe the technique for raising a fasciocutaneous iliotibial perforator flap and present its application in the reconstruction of a complex soft tissue defect of the foot. The patient was a 13-year-old male who had suffered a crush injury to the foot in a motor vehicle accident 5 years earlier.

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The authors report a patient with masticator space abscess due to an ascending infection following a wisdom tooth extraction. They administered antibiotics and did an incision and drainage; however, osteomyelitis of the mandible and compartment syndrome of the temporal muscle complicated the course. The authors suggest a physiopathology and discuss the management of this study.

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Background/aim: Active participation in sports is a risk factor for maxillofacial fractures. The aim of this retrospective multicentre study was to survey and evaluate the characteristics of mandibular fractures, and dental injuries that occurred during the practice of baseball and softball in Sendai, Japan.

Material And Methods: The records of 454 patients with maxillofacial fractures from three departments of Oral and Maxillofacial Surgery across a period 14 years were analysed.

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Background/aim: Maxillofacial trauma is frequent and represents a heavy burden for patients and society. The aim of this study was to investigate the characteristics and management of mandibular fractures caused by falls.

Material And Methods: One hundred thirty-nine patients with 185 mandible fractures caused by falls were included in this retrospective study.

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Purpose Of Review: The aim of this article is to review the literature on medial femoral condyle (MFC) free flap in head and neck reconstruction.

Recent Findings: The MFC flap is a superb material for head and neck reconstruction, especially in smaller bony defects. As an alternative to fibular free flap, it presents many advantages.

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We deal regularly with patients who present with severe atrophy of the jaws, compromised soft tissue, or penetrating defects of the alveolar ridge that are not the result of malignant disease. For these patients we use microvascular bony flaps together with dental implants and implant-supported prostheses. The purpose of this retrospective study was to present our current management and the lessons we have learned over a 16-year period while treating 86 patients for these indications with 87 microvascular bone flaps.

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Large airway reconstruction is difficult and requires a flap that will mirror the tissue variety. The main challenge is to keep the reconstruction stable and prevent collapse. In this report, we present a laryngotracheal reconstruction with a buccal mucosa-prefabricated medial femoral condyle free flap, after chondroma excision in a 1-step procedure.

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Septic arthritis of the temporomandibular joint (TMJ) is rare, but patients with this diagnosis are at high risk for significant morbidity. We present a case of a 15-year-old man who presented with increasing trismus for 3 days. He had only minimal discomfort and swelling of the right cheek and temporal region, and pericoronitis of an impacted wisdom tooth was suspected.

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