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.
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.
Authors: J T Wright; P S Hart; M J Aldred; K Seow; P J M Crawford; S P Hong; C W Gibson; T C Hart Journal: Connect Tissue Res Date: 2003 Impact factor: 3.417
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Authors: Jeong-Min Ko; Young Ju Suh; Jongrak Hong; Jun-Young Paeng; Seung-Hak Baek; Young Ho Kim Journal: Angle Orthod Date: 2013-05-10 Impact factor: 2.079