Biomedical subjects
Publications and source records attributed to R Charland.
Enamel Micro-abrasion is a technique where an acid is used in combination with an abrasive to remove the superficial layer of enamel which has certain dental colorants within its structure. It is indicated as the treatment of choice for superficial enamel stains and is a technique which every dentist should offer to their patients. It is a simple, conservative, efficient and durable procedure.
Fearful children in the dental office is an old problem which the majority of dentists have to face in their daily practice. With the help of a brief review of the literature, diverse strategies employed to adjust to the different behavior patterns of children in the dental office are detailed. Furthermore, to illustrate several of the techniques proposed, we have during the month of May 1990, systematically filmed different behavior patterns of children in the waiting room, as well as, in the dental operatory. The material thus obtained, permitted the production of videocassettes on the following themes: "How to approach the child in the dental office?"; "How to treat the young anxious child or a child with a difficult behavior pattern?"; "The first visit to the dentist"; "How to present dental injections?"; "The presence of parents in the dental operatory"; and, "Preventive dentistry". These cassettes are meant for dentists, hygienists, dental assistants, as well as, dental students. Moreover, in the hands of parents, this material answers their numerous questions. Each individual will find something in these presentations, or at least some areas for future exploration.
At the beginning of the century the radical approach to treatment of an occlusal surface carie of a molar were related to the principles developed by G.V. Black. Extension for prevention in the occlusal fissures, whether they were decayed or not, respected the needs of that era. Those ideas were based on the epidemiology of dental caries and mechanical properties of the filling materials in use to treat them. The parameters of treatment have changed, the reality is not the same. Nowadays, conservative composite resin restorations, demand a less destructive approach for small carious pit and fissure lesions in both the primary and permanent dentitions.
There exists a multitude of systemic diseases which exhibit consequential oral manifestations. Dermatologic disorders frequently involve intraoral and perioral tissues which dental practitioners should be familiar with. A compilation of disorders including; bullous diseases (such as Pemphigus Vulgaris, Erythema Multiforme, Pemphigoid, Dermatitis Herpetiformis, Epidermolysis Bullosa, and Darier's disease), as well as non bullous diseases (such as Lichen Planus, Psoriasis, Lupus erythematosus, Scleroderma, and Perioral Dermatitis); and their oral manifestations are presented in order to facilitate their early diagnosis and subsequent treatment.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
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Fifty French-Canadian patients presenting with typical or atypical anginal pain were studied by selective cinearteriography and coronary sinus catheterization, with measurement of myocardial function, oxygen and lactate extraction at rest and during isoproterenol infusion. In 28 of 42 patients all three coronary arteries were involved, but angina pectoris also occurred in patients with single mildly stenotic arterial lesions and even in eight patients with normal cinearteriograms. All patients with severe arterial lesions had typical angina, and the longer the duration of angina, the greater the extent, usually, of anatomic disease. Seventy-nine percent of resting electrocardiograms of patients with documented coronary artery disease were abnormal, with recognizable prior infarction in 18. Two-thirds of the patients experiencing pain during the stressful state had abnormal ventricular function. An abnormal arteriovenous lactate difference in response to isoproterenol occurred in patients in all groups.
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