Maxillary expander using light, continuous force and autoblocking.
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Child↗
Biomedical subjects
C Lorenzon
Publications and source records attributed to C Lorenzon.
Correction of mandibular dentoalveolar retrusion by segmental mandibular surgery.
Mandibular dentoalveolar retrusion is a common problem that often can be related to missing or extracted teeth in the mandibular arch. The correction of this type of malformation through surgical mandibular advancement to eliminate the large overjet significantly increases the chin prominence, resulting in a poor facial appearance. With the use of a combined orthodontic and surgical treatment that includes segmental osteotomies of the anterior part of the mandible, this negative effect can be avoided and arch length can be restored. This procedure was carried out in three patients aged 26 to 33 years. The bony spaces created distal to the anterior segment were filled with iliac bone grafts. At the end of the orthodontic treatment, the missing premolars were replaced with conventional fixed dentures, bonded prostheses, or implants.
Adult↗
[Orthodontic movements and the periodontium: how far to go? A review of the literature].
The aim of this paper was to describe, with the help of recent research informations, the possible interactions between orthodontics and periodontics. It is well-known that the periodontal structures of a tooth play an important role during its orthodontic movement; this should therefore be considered before, during and after any orthodontic treatment. The theoretical basis of the usual difficulties are explained, as well as their clinical consequences. The particular problem of orthodontic movements in dentitions with reduced periodontal support has been stressed. A synoptic table summarizes the diagnostic steps and the clinical approach with the recommendations which seem, at the present time, to allow the preservation of the periodontal structures during orthodontic movement. Finally, the problem of apical root resorption is addressed in a specific chapter.
Adult↗