The Dri-Angle is a unique replacement and a decided improvement on the cotton roll in the parotid area. The Dri-Angle covers the parotid or Stensen's duct and effectively restricts the flow of saliva. Designed by a dentist, John W. Owen, DDS, the Dri-Angle was created to meet the need for a dry field when working with composites, bonding, and cementing.