Biomedical subjects
C Demange
Publications and source records attributed to C Demange.
[Control of the transverse direction in lingual orthodontics].
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[Burning mouth syndromes and depression. A psychoanalytic approach].
1. Analytical approaches to Burning Mouth Syndrome permit the suggestion that it is a symptom of hidden depression, where the depressive process and its two major indicators (vital sadness and psycho-motor slowing down) are totally or partially concealed by a somatic symptomatology which can strike down any system: vaso-vegetative, cardio-vascular, gastro-intestinal, genito-urinary, muscles and skeleton. 2. Depression is a mental process, part of normal psychic development, which must be overcome at least once in a lifetime in order to reach the status of an autonomous being. Hidden depression is one form of pathological depression, which expresses an inability to (i) mentalize depression, separation, and (ii) become an autonomous being. 3. Burning mouth is a symptom resulting from complex dynamics, from hysterical conversion to the inability to mentalize separation, both with underlying fault in the "narcissistic nucleus" (a term meaning the sense of identity originating in the motherly holding, in the skin to skin touch). 4. Treatment will be a combination of anti-depressive drugs and psychotherapy, drugs being prescribed by the practitioner, and psychotherapy conducted by a therapist with an analytical background.
Microsporum gypseum complex in man and animals.
Twenty-eight strains of the Microsporum gypseum complex isolated from humans and animals were studied. The perfect form was found for 25 of the isolates. Nannizzia incurvata was the species most frequently involved in human pathology, while Nannizzia gypsea was most frequently found on animal lesions. Nannizzia fulva was rarely involved pathologically and Nannizzia corniculata was not isolated during this study. It is surprising to note that this species was not found even though most of our strains (22/28) came from Africa. Reliable methods are not available for differentiating among the anamorphs, which are commonly called M. gypseum, Microsporum fulvum or Microsporum boullardii. The Sabouraud medium conventionally used for medical mycology makes almost no distinction among them. We found that the species could be easily distinguished by colonial and microscopic features when grown on Takashio medium. When strains are atypical, sexual reproduction remains the reference technique but, in most cases, Takashio medium makes it possible to avoid this long drawn-out procedure.
[The computer and the orthodontist].
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[Mean angular torque values in the normal population].
Torque angle of all teeth are measured from 355 ideal occlusion subjects. Meen torque values are compared between various straight wire appliances (Alexander, Andrews, Ricketts, Root, Roth).
Equilibrium situations in bend force systems.
This article provides a simple theoretical approach to the equilibrium situations encountered in biomechanics. Basic differences between the moment of a force and the moment of a couple are described. The concept of the center of resistance is defined and applied to the case of a force system (Rs). Three equilibrium situations are schematically described: the off-center V bend, the centered V bend, and the step bend. Two clinical examples are detailed (one from the Begg technique and one from the Ricketts technique) to demonstrate clinical applications of force in these three situations.
Measuring and charting interproximal enamel removal.
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["Robot portrait" of CECSMO students].
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[Vertical dimension in the Begg technic].
This data of 25 treated cases in BEGG technic show, with RICKETTS analysis, a small augmentation of vertical dimensions during treatment. During retention, four of five factors improved. No correlation have been found between increase rate of vertical dimensions, treatment duration, and initial typology.
[Modifications in hemorheological parameters following acute medical emergencies (author's transl)].
Various hemorheological parameters were studied in venous blood samples taken during the initial stages of acute medical emergencies in patients admitted to the Intensive Care Unit. These included more particularly: cerebrovascular accidents, recent acute arterial or venous thrombosis, pulmonary embolism, acute renal failure, pregnancy toxemia and emergencies occurring during pregnancy or in the puerperium, coagulation disorders, gas embolism... The examinations conducted were:--measurement of apparent--blood viscosity (eta a) and plasma viscosity--platelet aggregate fixation after fixing in formalin according to the method described by Wu and Hoak--blood filterability through filters with pores 5 microns in diameter. The principal modifications observed, often correlated were raised blood and plasma viscosity, reduction in the aggregation index, and diminution in filterability. It should be noted that the increase in viscosity, constant in all groups, is significant at low shearing speeds in the thrombosis cases, and that this significance is present in nearly all the pathological groups with high shearing speeds. Variations in the aggregation index are very dispersed and of low significance.