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Biomedical subjects

C Demars-Fremault

Publications and source records attributed to C Demars-Fremault.

8 recordsLinked to original sources
PubMed1997

[Management under ambulatory general anesthesia of handicapped children in dentistry-oral medicine].

The management of handicapped patients and children is often considered by the dentist as a challenge. The success depends on establishing the right initial contact with the patient and obtaining his acceptance of the treatment without disturbing the psychosomatic equilibrium existing between body, affectivity and mind. Should dental treatment under general anesthesia, therefore, be considered as a failure or rather as a strategy in dentistry, which permits the eradication of all infectious centers and ensures the maintenance of a sufficient masticatory capability for the handicapped patient?

Affect↗
PubMed1993

[Chemical and traumatic irritation of a canine premolar tooth germ].

The arrest of a premolar bud was observed in an animal experiment that was designed to study the influence of endodontic treatment in dogs' temporary teeth on the eruption of their permanent successors. A chemical irritation was induced by the burst of ZOE (zinc oxide and eugenol) into the dental follicle. Moreover, a mechanical trauma on the temporary molar was promoted by the dog's biting on its cage metallic bars. The devitalization effects were studied in thick undecalcified ground sections which were subjected to microradiographic analysis, to UV light microscopy in order to detect the fluorescent indicators of calcification, and finally to methylene blue staining. The arrest of the bud development was noted in fluorescent microscopic examination. Cellular cementum was formed on the pulpal surface of the dentine, while cementum, chondroid tissue, woven bone and lamellar bone developed in the pulpal tissue. These observations advise caution during root canal therapy of temporary teeth, especially those that are exposed to mechanical trauma. Such as the upper incisors.

Animals↗
PubMed1992

[Approach to pulpal and pulpo-periodontal lesions of the temporary teeth using therapeutic endodontics].

The anatomical and physiological properties of deciduous teeth make them susceptible to caries and inflammatory and infectious complications. This specificity, the proximity of the germ of the underlaying permanent tooth, and the relation of the last one to the deciduous tooth, make delicate its conservation by endodontal therapeutics after a pulpal or pulpo-periodontal affection. The success of this attempt is related to a good case-selection, based on the general condition of the child, his and his parents motivation, the condition of cariogenicity of the mouth, the analysis of the unity deciduous tooth/germ of the underlaying permanent tooth, the follow-up of the case. A success spares young children extraction of the deciduous teeth before the physiological period of permutation.

Child↗
PubMed1992

[Observations on prosthetic restoration in children].

In young children there are two frequent factors, that cause edentation: the syndrome of the sugar "baby's bottle" or the "honey dummy" and tooth-loss by trauma. Multiple extractions can be programmed in children for reason of general condition, in the major concern to remove present or potential infectious foci. Still less frequently, sometimes lately diagnosed anomalies in number or structure oblige to replacement of missing or deficient tooth. The complexity of these restorations can be related to technical problems, less frequent, in contradiction to the current opinion, to psychological problems. They have to be integrated in structures in growth, the key character of each treatment in children or adolescents. Consequently it is necessary to take account of all this factors, before to attempt this charge, and to foresee adaptations, regular control, succession of the case and interception.

Child↗
PubMed1991

[A microradiographic and histological study of a case of dentinogenesis imperfecta type I].

Four temporary teeth, extracted for periodontal infection reasons, from a 53-months-old child with osteogenesis imperfecta, have been coated in methyl metacrylate and prepared for microradiographic analysis and light microscopic study. The enamel and dentin of three teeth (51, 65 and 85) don't show any particularity, some how the cementum is remarkably thin. Pulp chambers was large and contain a great number of calcifications. Some of them present a radial striation around a radio-transparent center, and when coloured with blue of methylen, they revealed inflammatory or fibroblastic cells. The fourth tooth (55) shows a dentinogenetic overproduction which closed the major part of the pulp chamber. The dentin presents two rows of different aspect, separated with a calcified bond. The mantle dentin contains sinuous tubules with a type I arrangement of SIAR classification (1986). But, in the deepest dentin, they are very little size and joined together while approaching the center of the tooth and coast along cellular inclusions, pathognomonic sign of dentinogenesis imperfecta. The pulpal space not obliterated contains a calcification with radial and microlacunary aspect.

Child, Preschool↗
PubMed1991

[Furcation lesions in deciduous teeth].

The area of furcation of temporary molars constitutes a zone of exchanges and rearrangements relating to the evolution of the sub-adjacent permanent tooth. It is subjected to the eruption of the latter and to the physiological modifications of the temporary tooth. Moreover, this area is the site of above-mentioned inflammatory or infections conditions, maintained or aggravated by anatomical factors (accessory canals, thin pulpar floor, with little calcified dentine and broad tubuli), physiological factors (multiplication of accessory canals, decrease in the floor and migration of the epithelial attachment), endodontic factors (pulpal involvement and its complications) and periodontal factors (septum syndrome). The pathology of furcation is an evolving lesion. When discovered early it can be treated by endodontic therapy, while, in a later phase, it will require the extraction of the tooth. The assessment is made on the basis of a X-Ray examination which permits the temporary tooth to be situated in its stable or labile phase, the condition of the pulpal floor to be evaluated and the stage of sub-adjacent germ mineralisation to be estimated. A periodontal arrangement, by coronal reconstitution, conditions the reliability of the endodontic therapies.

Child↗
PubMed1990

[Analysis of deciduous tooth discoloration, before and after liver transplantation].

130 children aged between 5 months and 15 years were orally examined in our Department in view of preparation for hepatic pre-grafts, before being given a graft by Professor J.-B. Otte and his team at the Paediatric Surgery Department. 70% of these children age from 5 months to 3 years. We report here two cases of dysplasia and dyschromia, observable in young children, which appear to us to be particularly convincing.

Adolescent↗