Biomedical subjects
B Négrier
Publications and source records attributed to B Négrier.
[Esthetic impact of the Le Fort I type osteotomy].
The study of a population treated according to orthodontico-surgical process with only a LE FORT I osteotomy allowed us to determinate the moderate influence on each element of curtain profile (nose, lips and chin). The comparison between relative moving of maxillary and the one of each cutaneous structures enable us to define the sagittal and vertical displacement's ratios of curtain profile.
[Indication of maxillary reduction in surgical-orthodontic protocols].
The LEFORT I maxillary impaction correction of the dento-alveolar vertical compensation improve the labial contact and allow to establish a better occlusion. The site, the symmetry and the importance of this impaction depend of the initial exo and endobuccal diagnosis. Three cases are studied to appreciate its clinical possibilities.
[Capillary-venous angioma of the temporo-masseteric region].
Angioma of temporomasseteric region is a capillariovenous malformation in the temporomasseteric groove which can extend into adjacent facial zones. It forms a well defined clinicopathological entity. Clinically these angiomas present typical signs of a slow output capillariovenous angioma. Several patients were investigated by standard radiology, tomography and scan imaging, allowing detection of bony, particularly maxillary deformities, and by preoperative laboratory examinations. Treatment is by first stage embolization in situ of the angioma using sclerosing agents to reduce risk of perioperative bleeding and disseminated intravascular coagulation. The second surgical stage varies with the size and site of the lesion. Treatment should be carried out fairly early in childhood to avoid facial skeletal and muscular deformities. This hopefully allows harmonious growth of face with preservation of functions that risk alteration by the temporomasseteric angioma.
[Approach to the pterygomaxillary region by the Lefort I osteotomy].
Approach to the pterygomaxillary fossa under the base of skull, a difficult operation, has been facilitated by the use of a technique derived from the Lefort I osteotomy. Satisfactory access to the fossa and to the posterior-base region is obtained and esthetic or functional sequelae avoided.
[Labial incompetence and maxillodental dysmorphosis].
A definition of labial incompetence is given and emptrasis placed on the fact that this is a symptom of maxillodental dysmorphism (MDD) and not of nasal dyspermeability. Pathogenic features are discussed, the relevant clinical and paraclinical diagnostic features of MDD outlined, and the different alveolodental and/or bony (maxillary or mandibular) dysmorphias responsible for labial incompetence described. Principles of orthodontic and surgical treatment are centered on re-establishment of a correct articulation and therefore labial competence.
[Mucoceles of the maxillary sinus. Diagnostic and therapeutic problems. Apropos of 5 cases].
Five cases of the rarely observed maxillary sinus mucocele are reported, one patient with bilateral lesions presenting primary dilatation of the bronchi. A previous history of surgery or injury to sinuses was obtained in all cases, the diagnosis being confirmed by computed tomography imaging. Recovery is usually complete after the Caldwell-Luc operation. One case with exclusion of the sinus is described and the literature reviewed.
[Use of the pectoralis major myocutaneous flap in transmaxillary buccopharyngectomy].
Pectoralis major musculocutaneous flaps were used for reconstruction after transmaxillary buccopharyngectomy to treat 22 patients with large oropharyngeal tumors. Short and medium term results are discussed. Large excisions such as these raise many functional problems, even though the use of a musculocutaneous flap for reconstruction is a valid procedure from the anatomical point of view. The cancer prognosis must still be reserved as follow up is still limited for these cases.
[Rehabilitation of the columellar effect].
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[Derived potentials and the microcomputer (author's transl)].
A method for conducting "brain stem early derived potentials" using an inexpensive microcomputer is described. This type of examination is, however, difficult to perform, and is not currently employed in clinical practice. The contribution offered by this data-processing system is emphasized.