Global Distribution of Marginal Accessory Tubercles of the Maxillary Premolars

The present study assesses the global distribution of marginal accessory tubercles of the maxillary premolars. This trait, despite constituting one of the variables standardized by Turner and colleagues (1991), has received little attention in morphological studies. Frequencies were calculated from data sheets collected by Christy G. Turner II for mesial, distal, and mesial + distal grades. Different geographic patterns were identified for both...