Dirk ENGELKE

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In der Kieferorthopädie werden Fehlfunktionen der Zunge als Faktor bei der Entstehung von Dysgnathien diskutiert. Ein neues objektives Verfahren zur Untersuchung motorischer Zungenfunktion ist die elektromagnetische Artikulographie (EMA). Mit ihr können Bewegungen der Zunge dargestellt sowie deren räumliche und zeitliche Koordination beschrieben werden. Das(More)
The Le Fort I osteotomy can be used to change the position of the maxilla in all three dimensions. A presurgically fabricated occlusal splint is used to reproduce the planned sagittal and transverse position of the maxilla. Various methods for determining the proper vertical position have been described. The major difficulty in vertical control when these(More)
In orthognathic surgery a three-dimensional positioning of the maxilla is possible by means of the Le Fort I osteotomy and subsequent maxillary movement. In treatment planning and at the time of surgery it is very important to achieve an exact positioning of the upper incisors in relation to the upper lip and the rest of the skull. The Model Positioning(More)
RNase P derived from S. cerevisiae nuclei was tested for its ability to cleave a variety of naturally occurring and selectively altered precursor-tRNA molecules to yield matured 5' termini. Precursors were synthesized in vitro in order to test which aspects of substrate structure are crucial to recognition and cleavage by RNase P. Base modifications in the(More)
Objective data are required for assessing the influence of movements of the tongue on the position of the teeth. Electromagnetic articulography (EMA) makes it possible to track movements of the tongue using the principle of inductive distance measurement. A helmet made of light but robust acrylic material serves as a carrier for three transmitter coils;(More)
A new method for positioning the maxilla and condyle after Le Fort I osteotomy maintains the patient's vertical dimension (ie, the relation of the mandible to the skull above the osteotomy plane) in the preoperative and postoperative positions during both cast surgery and actual surgery. During surgery the condylar positioning appliance is fixed to the(More)
During orthodontic-surgical treatment of dentofacial deformities, centric relation of the mandibular condylar head to the fossa articularis must be maintained. Intraoperative application of the condylar positioning appliance, in combination with different surgical splints, allows three-dimensional adjustment of the jaw segments. The condylar positioning(More)
Hydroxylapatite is commonly used for augmentation of the atrophic alveolar ridge. A new surgical technique is described for HA-augmentation and simultaneous vestibuloplasty on the severely atrophic jaw. The open surgical technique includes a lingually based mucoperiostal flap, the implantation of Hydroxylapatite particles in a vicryl mesh and the use of a(More)
(Martin Brunnhuber MSc., DI Dr. Gerd Hesina, VRVis Research Center for Virtual Reality and Visualization Ltd. , Donau-CityStrasse 1, A-1210 Vienna, brunn@vrvis.at, hesina@vrvis.at) (DI Helmut Schrom-Feiertag, Dietmar Bauer, AIT Austrian Institute of Technology, Helmut.Schrom-Feiertag@ait.ac.at, Dietmar.Bauer@ait.ac.at) (Univ.-Prof. DI Dr. Werner(More)
The use of a GIS-based methodology – Service Access Planning for assessing service provision and developing facility plans in South Africa to improve governance and equitable service delivery is described. A case study of library investment for eThekwini municipality is used to illustrate the methodology. The South African constitution requires that every(More)