Marcus Gerressen

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BACKGROUND Computer-assisted surgery plays an increasingly important role in mandibular reconstruction, ensuring the best possible masticatory function and aesthetic outcome. METHODS Twenty patients were randomly assigned to computer-assisted or conventional mandibular reconstruction with vascularized iliac crest bone graft in a prospective study(More)
BACKGROUND The introduction of computer-assisted surgery was a milestone in functional reconstructions of facial skeletal defects. PATIENTS AND METHODS We compared five computer-assisted and five conventional reconstructions with fibular grafts in the course of a pilot study. A rapid prototyping guide translated the computer-assisted surgery plan into(More)
BACKGROUND Virtual reality-based simulators offer a cost-effective and efficient alternative to traditional medical training and planning. Developing a simulator that enables the training of medical skills and also supports recognition of errors made by the trainee is a challenge. The first step in developing such a system consists of error identification(More)
PURPOSE We compared autogenous bone grafts from the proximal tibia and the anterior iliac crest under standardized conditions with regard to the attainable bone amount and the histological bone density. MATERIAL AND METHODS In 15 freshly preserved adult cadavers, a corticocancellous block graft from the anterior iliac crest and a purely cancellous(More)
BACKGROUND Surgical treatment and complications in patients with zygomatic bone fractures can lead to a significant degree of tissue trauma resulting in common postoperative symptoms and types of pain, facial swelling and functional impairment. Beneficial effects of local cold treatment on postoperative swelling, edema, pain, inflammation, and hemorrhage,(More)
The authors hypothesized that by modifying the sequence of the rhinoplasty procedure they could avoid comminuted fractures resulting in suboptimal cosmetic results. Percutaneous perforated lateral nasal osteotomies were performed in 36 fresh human cadaver heads. In the first group of 19 cadaver heads with big nasal humps, the perforations of the lateral(More)
PURPOSE The objective of this study is to characterize the donor-site morbidity after harvesting of nonvascularized and vascularized iliac bone grafts. PATIENTS AND METHODS Clinical data of 353 patients were collected for analysis. In addition, a questionnaire was sent to all patients asking about their perceptions of different parameters. In an(More)
The aim of the present study was to analyze the osteogenic potential of a biphasic calcium composite material (BCC) with a negative surface charge for maxillary sinus floor augmentation. In a 61 year old patient, the BCC material was used in a bilateral sinus floor augmentation procedure. Six months postoperative, a bone sample was taken from the augmented(More)
PURPOSE The reconstruction of extended soft tissue and bony defects in the maxillofacial region with microsurgical flaps is considered to be the therapy of first choice. The aim of this retrospective study was to detect different influencing factors concerning flap survival. MATERIALS AND METHODS We examined the data of 406 patient cases (121 female and(More)
PURPOSE The goal of this retrospective study was to examine whether utilization of condylar positioning devices in bilateral sagittal split osteotomy leads to long-term benefits for temporomandibular joint function as compared with the manual positioning technique. PATIENTS AND METHODS The joint function of 49 patients (98 joints) who underwent bilateral(More)