Biomedical subjects
Publications and source records attributed to H Cadenat.
The authors expose their approach in the surgical treatment of mandibular retrognathism. They study the anomalies in the transverse, vertical and sagittal directions. They increase the transverse size of the maxilla by the mean of an original technique ("trident" osteotomy) recently described. Also they show several technical procedures about incisions, osteotomies and osteosynthesis.
Regarding the bad results of the orthopaedic treatment of subcondylar dislocated mandibular fractures, the authors present a comparative study of two series of twelve patients: one (group "A") with orthopaedic treatment; the other one (group "B") with surgical treatment by "up and down" pinning via a temporal approach. The results of surgical treatment seem to be better than those of orthopaedic treatment, as it can be seen in some other papers. The choice of the surgical technique of osteosynthesis and the indications are then discussed. It seems to be necessary to improve the specific instrumentation for wider indications an better results.
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A variation is proposed in the surgical technique employed to treat facial vertical axis excess (Long Face Syndrome). The conventional osteotomy used to treat Le Fort's fracture by means of wide horizontal incisions has been modified. The excessive height of the maxilla is treated by vertical incisions united by tunnels, osteotomy of the posterior wall of the maxillary sinus using the "egg-shell" technique, contention by Champy's plates, and genioplasty to correct the constantly exaggerated height of the mandibular symphysis.
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The authors report a case of stomatitis, in a patient receiving antimitotic therapy, which was found to be due to an acute leukosis. They feel that patients on antimitotics who develop stomatitis should have a white cell count to exclude leukosis, which is not a very rare finding today.
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The authors used injected anatomical specimens to analyse the cutaneous vascular distribution of the cervical and cervicodorsal regions. The arrangement of the arterial network does not make it possible to define flaps with a vascular pedicle. Only the jugular vein may be used as the axis for such a flap. The most valuable flaps, in everyday practice, are transverse flaps, a vertical flap pediculated on the external jugular and the cervicodorsal flap used without autonomisation. The combined musculocutaneous flap, including the sternocleidomastoid, is used in the treatment of extensive loss of laterofacial substance.
The authors present the case of an eight-years-old child, dialysed since the age of two following a bilateral nephrectomy. The chronological appearance of the teeth was not disturbed. By contrast, there was a delay in mineralisation of the dental organ, and in particular the root. There was lysis of the alveolar bone, resulting in a parodontopathy. The authors distinguish two ages in the effects of dialysis: the first period is that of the construction of the dental system and the second is the adult age at which the dental system is constituted.
The authors present a new case of aesthesioneurocytoma with an atypical localisation. They review the clinical, radiological and histological features of these tumours. They stress the importance of mixed surgical/radiotherapy treatment and suggest the desirability of routine estimation before and after treatment of U. M. A. and U. V. A. Dopamine in the urine.
With regard to recurrences following surgery for prognathia of the mandible, the authors draw the distinction between immediate and secondary recurrences caused by errors in surgical indication or technique. They then review late recurrences, which they classify as being alveolar, basal or by forward sliding. They then study the role played in recurrences by growth of the condyle, neuromuscular balance and the hyoid suspensor system. Finally they stress the action of the tongue and the age factor (over 17 years being, in their view, desirable).
The authors report two cases of dilatation of the dental canal due to metastases. They review the clinical picture of dilatations of the dental canal which, other than being related to metastases, may be secondary to a haemangioma or a neurofibroma. They express the desire that measurements may be helpful in considering cases at the limit of normal, as for the internal auditory meatus and the optic canals.
The authors present a reconstruction after total mandibulectomy, using a Kirschner wire, modelled and adjusted at the time of insertion. They emphasis the simplicity of the technique and the quality of the result.
The writers have studied mandibular anomalies in a series of 20 surgically treated clefts. Anomalies of shape occur in one case out of two and are in the form of a mandible which is too long. Anomalies of position most often show a mandible in front of the maxillary and to the rear in comparison to the base of the skull.
The authors describe the case of mesiodens in two non-identical twins and in their grandfather. They recall that, although no investigation confirmed the hereditary nature of the mesiodens, it is quite undeniable in view of the frequency of familial cases. They think there is a recessive gene on an autosome and a gene on the inhibiting chromosome X. They discount the theory of mutation.
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