Periodontal conditions after facial root tipping and palatal root torque of incisors.
作者： Heinrich Wehrbein , Robert A.W. Fuhrmann , Peter R. Diedrich
DOI: 10.1016/S0889-5406(94)70067-2
关键词: Coronal plane 、 Incisor 、 Root resorption 、 Sagittal plane 、 Vestibular system 、 Medicine 、 Maxilla 、 Dentistry 、 Alveolar process 、 Palatal root
摘要: The maxilla of a deceased 19-year-old young woman who had been treated with fixed appliance was removed during autopsy. sagital movements the incisors could be reconstructed by using treatment records, which were also at our disposal. anterior segment specimen prepared histologically in sagittal plane and stained toliudine blue. Results: tooth executed two phases: an uncontrolled tipping (root movement to vestibular) followed palatinal root torque. histologic changes, induced torque (1) resorption apical slope from facioapical orocoronal, (2) pronounced superiosteal bone apposition (palatinal) partical protrusion cortical plate thinning toward coronal. No osseous perforations occurred. extent locization resorptions not verified orthoradial x-ray film specimen.
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