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Areca nut (betel nut) consumption occurs in a variety of forms, either on its own or with the addition of a number of products. This habit is prevalent in the Indian Subcontinent and South-East Asia. Recent immigration statistics indicate that 30% of new arrivals in Australia are from these geographical regions and are known to perpetuate this custom long after migration. The objective of this paper is to highlight the variety of oral presentations that may occur as a result of areca nut consumption in these particular demographic subgroups. Dental practitioners must be familiar with the wide spectrum of oral lesions that may present in this setting. More significantly, they must be aware that some of these lesions possess the potential for malignant transformation and hence require more specific management. Best practice mandates that dental practitioners in a multicultural society must: (1) be capable of recognizing the expatriate populations in which this custom is widely practised; (2) incorporate this particular line of questioning into the routine risk factor analysis that is undertaken for every patient from these particular sub-populations; and (3) institute appropriate referral and follow-up of these lesions if required.

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