Compact Prophy head 22% smaller head diameter than standard DPAs 25% shorter head than standard DPAs Slim neck 38% more slender than standard DPAs Improved maneuverability during polishing Reduced chatter (noise and vibration) Contra angle ergonomically designed to allow the hand and wrist to operate with less effort Unique spiral cup designed to reduce splatter and improve interproximal cleaning Soft cup adapts easily to tooth contours