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Biomedical subjects

J Delaire

Publications and source records attributed to J Delaire.

At least 109 records · Page 6Linked to original sources

[Conservative surgical treatment for large maxillary cysts. Some comments on technique (author's transl)].

Conservative surgical treatment for large maxillary cysts consists of releasing the cystic wall of the bony cavity without destroying the pulp of the teeth which have apices close to the operated cavity (unless the tooth is already dead). The vestibular approach is through one or two orifices and is as small in size as possible. This technique generally allows conservation of the vitality of the largest number of teeth and avoids postoperative collapse.

Bone Cysts↗

[Anatomy and physiology of the nasolabial muscles in a normal subject and in one operated for maxillolabial cleft. Allowance in the treatment of their sequelae for the orthodontic era].

Surgery of the clefts of lips and jaws, particularly the prevention or correction of their sequels, is based on a sound knowledge of the anatomy and physiology of the mimic muscles. Their function is essential for the morphogenesis of the underlying skeletal structures. To restore the physiological functional pattern of all of these muscles is the aim of any surgical procedure in these cases. If the sequels of the cleft are of a certain importance at the time when orthodontic treatment usually takes place, it is indispensable to restore a well-balanced muscle function. Surgery might be done before or immediately after orthodontic treatment, but anyway it has to be done at this age, when the child is still going through a period of intensive growth. The last corrective measures only, aimed at merely aesthetic improvements (surgery upon nasal cartilage and revision of scars), are deferred until growth has ceased.

Adolescent↗

[Results of treatment of mandibular fractures in 27 children (author's transl)].

Twenty-seven children aged from 0 to 15 years were treated for mandibular fractures in the Stomatology and Maxillofacial Surgical Unit in Nantes over a period of three years. Fractures of the condyle were frequently observed. Good results were obtained with functional treatment, but very strict criteria should be applied when assessing the quality of these results (which should be excellent, especially in relation to condylar mobility, in young subjects during the growing period).

Adolescent↗

[Malformations of the spino-cervical joint and of the cervical spine associated with Binder's syndrome (author's transl)].

The authors found in 53.5% of the cases of Binder's Syndrome, where a radiological work up had been carried out on the cervical spine and the spino-cervical joint, malformations of varying importance in these related structures. This lesional association had not as yet been pointed out. After pathological groupings and an analytical study of the anomalies encountered, the question of a common inducer factor is raised, or at least a factor contemporary to the two dysplasias, maxillo-nasal and vertebral. In practical terms, it would seem vital that all individuals with Binder's syndrome have a radiological examination of the cervical spine and the spino-cervical joint. In those subjects presenting with malformations and in particular, complex corporeal dysplasias, the authors strongly insist on the necessity of regular follow up in order to make an early diagnosis of eventual neurological repercussion.

Abnormalities, Multiple↗

[Uranostaphytopharyngoplasty using an inferior pedicle (author's transl)].

Treatment of deficiencies of the soft palate is dependent upon its condition, and the plastic surgeon is guided in his therapy by its length and suppleness. This was also the case when, in the past, a prosthesis had to be applied. If it is sufficiently long and supple a simple velopharyngoplasty, followed by phonetic reeducation, has every chance of producing a good result, at least in cooperative children and adolescents. When the soft palate is very shortened, however, a simple velopharyngoplasty does not ensure effective rhinopharyngeal occlusion and lengthening of the soft palate and the palatine mucofibrous tissue must be performed at the same time by means of a uranostaphylopharyngoplasty. In practice, this latter procedure is preferable in the majority of cases. We have used either superior or inferior flaps but over the last 25 years we have preferred the latter type of flap (Rosenthal) which produces better results because: 1) it is retracted laterally to a lesser degree, 2) it is more supple, 3) it is attached below and posteriorly to the soft palate (which permits the pharyngeal constrictor muscles, during contraction, to apply pressure against the lateral borders of the flap, and thus avoid any nasal regurgitation).

Child↗

[Secondary functional cheilo-rhino-plastie (author's transl)].

Secondary functional cheilo-rhino-plastie consists of restoring the normal insertions and orientations of the labio-narinary muscles (which they do not usually have after an initial cheilo-plastie), and this during the period of growth. The resultant functional transformations avoid the worsening of dento-maxillary sequelae and greatly improve orthodontic possibilities.

Adolescent↗

[Clinical and radiological aspects of maxillo-nasal dysostosis: "naso-maxillo-vertebral syndrome". A study of 34 new cases (author's transl)].

Maxillo-nasal dysostosis is not uncommon as we have noted 34 new cases in eight years. The most characteristic anomalies, well described by Binder, are nasal hypoplasia both of bone and cartilage with agenesis of the nasal spine, as well as a characteristic rearrangement of the naso-labial muscles. On first seeing the patient the disease is generally recognized by the very typical aspect of the nose. There very often exists however other dental, mandibular and cervical spine anomolies. It is indispensable to look for these anomalies in the work up of patients with this malformation syndrome "the naso-maxillo-vertebral syndrome", in order to better understand the disease and better treat the patients.

Abnormalities, Multiple↗

[Bone reconstruction after resection of the mandible for osteoradionecrosis (author's transl)].

Resection of the sections of the mandibular affected by osteoradionecrosis has completely modified the progression and prognosis of this affection by ensuring that the patient does not have to suffer long periods of pain and suppuration, constantly observed when medical treatment is used alone. Unfortunately, these resections are usually extensive and are themselves responsible for functional and esthetic sequelae supported with difficulty by some patients, especially in the case of bilateral or mandibular arch resections. All efforts must be made, therefore, to limit the consequences, and with this in mind it is possible: -- to perform an uninterrupted resection limited to the alveolar area involved, in early cases of mandibular osteoradionecrosis; -- to reconstitute mandibular continuity with a bone graft in more advanced stages; -- to improve the esthetic appearance with skin and subcutaneous grafts whenever this is necessary. Good results can only be obtained if certain anatomical conditions exist and if surgical precautions are adapted to each case.

Adult↗

[Treatment of Binder's maxillonasal dysostosis (author's transl)].

The treatment of Binder's maxillonasal dysostosis raises many problems and difficulties of both orthodontic and surgical natures. Orthodontic therapy should be conducted as early as possible and include, principally, an advancement of the maxilla by heavy extra-oral postero-anterior traction on an orthodontic mask. If good occlusion is obtained the patient can then be treated to improve the anatomical conditions of the muscles of the nose and upper lip. Maxillary, and more rarely mandibular osteotomies are indicated in cases with poor occlusion. When occlusion is reasonably good the hypoplasia has to be compensated for by using large portions of ilac bone to reconstruct the ridge and point of the nose. A preseptal graft on the ridge and secondarily, revisions of the point of the nose are often essential to ensure the best results.

Adolescent↗

Theoretical principles and technique of functional closure of the lip and nasal aperture.

Since many approaches to the closure of the cleft lip have not satisfied the hopes placed into them, the author has gone back to the principles stated by Veau (1938). His anatomical findings are presented. They form the basis of his technique of functional closure of the lip and nasal aperture: Careful dissection of all muscles involved, anatomical repositioning of all structures of the lip and the nasal entrance, and wide subperiosteal dissection. Careful reconstruction of a normal anatomical situation leads not only to better appearance and good mobility of the area concerned, but also to an enhanced growth of the underlying bony structures. Primary osteoplasty has been used, but does not seem to be necessary. The early results of this technique are very satisfying, however, later re-evaluation has to be made.

Cleft Lip↗

[Architectural and structural craniofacial analysis (lateral view). Theoretical principles. Some example of its use in maxillofacial surgery (author's transl)].

Based upon the study of mutual equilibrium of the various bony structures of the skull and face, cranio facial architectural and structural analysis studies successively the skull (vault and base), then the face in relation to the skull and to the cranio-spinal joint. Its value lies in avoiding statistical averages rather relying upon individual measurements, influenced by the special features of each skeleton. It places the dentition within its cephalic context, thereby making it possible to demonstrate certain pathogenic factors of dento-facial dysmorphoses, not demonstrated by traditional types of orthodontic analysis. It is particularly useful to the maxillofacial surgeon in clearly demonstrating all maxillfacial amlformations and the pathological equilibria which it must transform. In the most severe types of craniofacial dysmorphosis it offers better possibilities than other methods of analysis of detecting the various cranial and facial abnormalities which characterise these conditions.

Adolescent↗

[Cyst of the nostril (author's transl)].

Cysts at the edge of the nostril develop from the remains of the antero-inferior prolongation of the lacrimonasal duct, in approximately 98% of cases in the woman. It is a rare condition, the diagnosis of which is easy if the practitioner has ever seen a case. Its clinical appearance is, in fact, very uniform, characterised by the appearance and increase in size of the extra-osseous neoplasm, with extension into and under the nostril. Excision is easy and should be performed by a buccal approach.

Adult↗