Herbert Niederdellmann

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In recent years close consideration of the biomechanical principles of treatment of mandibular fractures has led to the use of operative as well as conservative methods. Since this combined method of treatment appeared cumbersome, a new kind of osteosynthesis plate was developed for functionally stable internal fixation of mandibular fractures, without the(More)
Various methods have been advocated for the treatment of fractures of the angle of the mandible, emphasizing the complexity of the problem. A functionally stable osteosynthesis can be achieved in such fractures with a solitary lag screw. This technique meets the principles of rigid internal fixation and achieves maximum stability with a minimum of implant(More)
Untersucht und beschrieben wird die intraoperative Präzision bei computergestützten chirurgischen Eingriffen, für die sich eine Abhängigkeit von den physikalischen Grundlagen der verwendeten Navigationssysteme – beschrieben durch die immanente Gerätepräzision – der geometrischen Anordnung und Verankerung von Referenz- und Zielpunkten sowie der Qualität der(More)
Osteosynthesis with lag screws is an essential supplement to osteosynthesis with mental plates. It is especially suitable in association with a neutralization plate for stabilization of short lamellar fractures. Wide lamellar fractures can be functionally stabilized with two or, in rare cases, three screws.
Functional and esthetic dysgnathia surgery requires accurate planning and precise surgical technique. Programs that simulate such surgery have thus become increasingly important. These are useless, however, when there is no technique for reproduction of surgical planning in the patient. This can be mediated by a surgical model. The present study(More)
Since the early 1990s, there have been continuous improvements in the software available for planning orthognathic surgery. This study investigates the precision of profile prediction by version 1.51 of the Dentofacial Planner (DFP). Orthognathic operations in 40 patients with different types of dysgnathia were evaluated. The preoperative and postoperative(More)
The treatment of fractures and osteotomies of the mandible and the midface show very different problems. The mandible must be treated in a stable and the midface in a static way. Due to the different bio-mechanics and topography of these bony structures, the advantages and disadvantages of treating a fracture in the maxillo-facial-region by the means of(More)
We report 9 subjets from 2 families with the syndrome of cerebral gigantism, seven of the patients also had jaw cyst basal cell naevoid syndrome. Neurological, radiological, somatic and biochemical features of this hitherto unreported association are described. Neurological symptoms included mild hydrocephalus, ventricular malformation, cerebellar syndrome,(More)