SADJ : journal of the South African Dental Association = tydskrif van die Suid-Afrikaanse Tandheelkundige Vereniging
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The contradictory results of earlier studies on the role of snuff in the aetiology of oral cancer may be due to the heterogeneous composition of snuff and to regional and cultural differences in its use. The aim of this study was to determine the prevalence and pattern of use of oral snuff in a rural South African adult population, and to report on associated oral lesions. A structured questionnaire was administered by means of face-to-face interviews with a population of 30 randomly selected households (125 adults over the age of 30 years). ⋯ Of the snuff-dippers, 84.6% place their snuff in the lower labial sulcus and 15.4% in the lower buccal sulcus, 80.8% of the dippers demonstrated keratotic lesions at the site of placement. The clinical severity of the lesions was significantly associated with the brand of snuff used (P < 0.01). The high prevalence of snuff dipping and associated lesion in many of the elderly that had never visited a dentist before highlights the importance of regular screening of this group at risk.
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This review of educational domains and problem-based learning in dental curricula examines the concept of educational domains under the following headings: the domains of skills and knowledge within which we expect students to demonstrate proficiency whether a course should be integrated, both vertically and horizontally between academic disciplines whether these domains are achievable by problem-based learning in whole or in part, and the type of learning domain or skill which is expected from students, such as cognitive, psychomotor and affective. Part I will deal with the first two aspects, while Part II (to be published in SADJ September 2000) will deal with problem-based learning (PBL) and the skills required of students.