[Indications and contraindications for tooth extraction].
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Biomedical subjects
Publications and source records attributed to W Steinhilber.
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In 42 patients, the mandibular protrusion and lateral excursions after fractures of the mandibular condyles were recorded using the "arrow-angle" registration method. The opening of the mouth was measured directly. The restriction of the mandibular mobility did not always correspond to fracture-mechanical expectations. Mobility improved as the time passed after the trauma, without the movement pattern changing.
Follow-up examinations in 39 patients with osteotomies in the maxillary alveolar ridge for correcting jaw deformities showed that the risk of devitalization of teeth in the mobilized fragments and in the firm residual parts of the jaw is small. In interalveolar osteotomies this risk is slightly greater than in transalveolar osteotomies, because of the restricted space.
Surface and structure of austenitic steel wire are changed when processed. Demonstration of unused wire, wire during processing as well as wire used as implant in fracture healing after its removal. Examination of metal ground sections of the used wire did not show any changes of the crystal structure in the sense of corrosion.
Breadth, length and height of the maxilla and palate measured on models of children with cleft palate decrease at first in the years after operation. The original measurements of the breadth of the dental arch are exceeded at the age of 8,5 but not the length of the dental arch.
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Follow-ups in 30 patients with osteotomies of the upper jaws showed that the risk of periodontal damage is small in primarily healthy periodontia. In most of the cases, the periodontal pockets in the region of osteotomy were less deep than those in other regions of the maxilla.
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