Retrognathic maxilla in “Habsburg jaw”

Abstract

Objective: To evaluate the dentoskeletal features of the ''Habsburg jaw'' by analyzing the skull of Joanna of Austria. Materials and Methods: The skull, the panoramic radiograph, and the lateral cephalogram of Joanna of Austria were analyzed. The cephalometric values of Joanna were compared to cephalometric standards for adult female subjects. Results: The analysis of the dentition on the dry skull and on the panoramic radiograph showed a generalized horizontal alveolar bone resorption with severe bone loss that was interpreted as a sign of severe periodontal disease with respect to the young age (31 years). The cephalometric analysis revealed the presence of a skeletal Class III disharmony associated with maxillary retrusion and normal sagittal position of the mandible. The maxilla exhibited a reduction in the sagittal dimension while the mandible presented with increased dimensions both in total mandibular length (Co-Gn) and in the mandibular body (Go-Gn). The skeletal open bite contributed to the lack of mandibular protrusion though in presence of increased mandibular sagittal dimensions. Conclusion: Joanna of Austria appeared to be affected by a peculiar type of ''Habsburg jaw'' as the Class III skeletal disharmony was due to a retrognathic maxilla rather than to a prognathic mandible. (Angle Orthod. 2012;82:387-395.)

Teeth of the Renaissance: A paleopathological and historic-medical study on the jaws of the Medici Family

“…As far as Giovanna is concerned, it is possible to state that she suffered from the so called Habsburg jaw [7], an anatomical defect which consists in a progenism, that is a prognatism of the mandible (Table 1). From the iconographic sources regarding the dynasty, it seems that the deformity developed and increased with aging and sometimes it was so serious as to have inhibited talking and eating (Fig.…”

Early Treatment of Anterior Crossbite with Eruption Guidance Appliance: A Case Report

“…This situation has to be interrupted as soon as possible, reaching a correct occlusal relation, to be maintained over time [24][25][26]. Furthermore, the familiarity with a class III malocclusion could genetically predispose the patient to this kind of malocclusion [27][28][29][30].…”

Genetics in an orthodontic perspective

“…Autosomal dominant mode of inheritance as well as eenvironmental factors also causes this malocclusion. [1,23] Genetic factors include vascular endothelial growth factor, insulin-like growth factor-1, collagen Type II, growth hormone receptor, and transforming growth factor. Environmental factors include hypoxia, ionizing radiation, nutrition deficiency, metabolic and hormonal disorders, enlarged tonsils, nasal blockage, and posture.…”