Qat Chewing and Risk of Potentially Malignant and Malignant Oral Disorders: A Systematic Review.
نویسندگان
چکیده
BACKGROUND Qat (also known as Khat, Kat and Miraa) is a green-leaved plant (Catha edulis). It is a shrub indigenous to Yemen and certain parts of eastern Africa. Chewing the leaves, which have sympathomimetic and euphoric effects, has been documented in many countries and increased with worldwide migration. The effect of long-term chewing Qat on the oral cavity is unknown. OBJECTIVE A systematic review was performed to identify any associations between Qat chewing and the occurrence of potentially malignant and malignant oral disorders. METHODS Medline and the Web of Science were searched for articles published before May 2014 without limits with regard to publication date and language. RESULTS From a total of 890 papers identified, 17 English papers reported potentially malignant or malignant oral disorders and Qat chewing. One additional paper in Arabic language was identified from reviewing the list of references of eligible papers. It was found that exposure to Qat may be associated with potentially malignant and malignant oral disorders, but methodological issues, such as inadequate study design, sample size, selection of study subjects, clinical evaluations of outcome and limited adjustment for confounders, limit the strength of the evidence base in this area. CONCLUSION The association between Qat chewing and potentially malignant and malignant oral disorders remains debatable and requires further investigations.
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ورودعنوان ژورنال:
- The international journal of occupational and environmental medicine
دوره 6 3 شماره
صفحات -
تاریخ انتشار 2015