Abstract
Palatal rugae are anatomical structures present in the roof of oral cavity; there is a significant association between rugae forms & ethnicity. The aim of this study is to compare rugae patterns in two different populations: Arabs (Asian) & Indians. 80 female participants were included in this study: 40 Arabs & 40 Indians. In the dental clinic / college of dentistry at university of Ajman in UAE. It has been found that the primary rugae lengths was significantly more in Arabs 8.325±1.3 compared to Indians 5.575±1.2, the Arabs population showed predominant wavy shaped rugae [58%], while the Indians had straight shaped rugae [40%]. These differences of the shape & lengths of palatal rugae appear as a result of genetic & environmental factors.
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