Jaw Positioning Device – Precise midface-related maxilla repositioning during orthognathic surgery
Occlusion irregularities can surgically be treated by corrective osteotomies of mandible and / or maxilla. However, exact midface-related repositioning of the maxilla after LeFort I Osteotomy remains challenging, as the mobilised parts of the jaw are free to move three-dimensionally. Previous approaches are all afflicted with considerable inaccuracy and some of them are associated with additional radiation exposure caused by three-dimensional imaging.
This invention allows exact midface-related maxilla repositioning during mono- or bimaxillary surgery. The jaw positioning device comprises three splints (primary-, secondary- and reference splint) and three connection bars. The maxillary shift is planned preoperatively by model-surgery and encoded by the difference between primary- and secondary splint. There is no need for navigational systems or complex bone models based on three-dimensional imaging. During surgery, the primary splint, which fits exactly to the occlusional surfaces of the maxillary teeth, is placed on the dental arch. The primary splint’s outer face features a definded surface profile, on which the reference splint is placed. In the next step, connection bars to three intraorally accessible points of the patient’s bony midface are fixed on the reference splint. In this way, the reference splint can be replaced exactly in a well-defined midface-related position, also without the primary splint. After LeFort I osteotomy, the maxilla can be precisely positioned at the target position by use of the secondary splint, that also fits exactly to the corresponding surface of the reference splint.
Weitere Informationen: PDF
PROvendis GmbH
Tel.: +49 (0)208/94105 10
Ansprechpartner
Dipl.-Ing. Alfred Schillert
Media Contact
Alle Nachrichten aus der Kategorie: Technologieangebote
Neueste Beiträge
Anlagenkonzepte für die Fertigung von Bipolarplatten, MEAs und Drucktanks
Grüner Wasserstoff zählt zu den Energieträgern der Zukunft. Um ihn in großen Mengen zu erzeugen, zu speichern und wieder in elektrische Energie zu wandeln, bedarf es effizienter und skalierbarer Fertigungsprozesse…
Ausfallsichere Dehnungssensoren ohne Stromverbrauch
Um die Sicherheit von Brücken, Kränen, Pipelines, Windrädern und vielem mehr zu überwachen, werden Dehnungssensoren benötigt. Eine grundlegend neue Technologie dafür haben Wissenschaftlerinnen und Wissenschaftler aus Bochum und Paderborn entwickelt….
Dauerlastfähige Wechselrichter
… ermöglichen deutliche Leistungssteigerung elektrischer Antriebe. Überhitzende Komponenten limitieren die Leistungsfähigkeit von Antriebssträngen bei Elektrofahrzeugen erheblich. Wechselrichtern fällt dabei eine große thermische Last zu, weshalb sie unter hohem Energieaufwand aktiv…