Braun Oral-B D9513 Electric Toothbrush Brand New. Factory Sealed. The Oral-B AdvancePower 900 Series toothbrush features the oscillating-rotating technology pioneered by Oral-B, and clinically proven to deliver noticeable results for cleaner, whiter teeth, and healthier gums. Now, an independent study has concluded, "Brushes that worked with a rotation oscillation action removed more plaque and reduced gingivitis more effectively than manual brushes in the short and long-term. No other powered brush designs were consistently superior Clinically Proven Benefits Use an Oral-B AdvancePower 900 Series Toothbrush twice daily to: Remove significantly more plaque than a manual toothbrush Remove significantly more stains than a manual toothbrush Help prevent gum disease, the leading cause of tooth loss Be as gentle on teeth and gums as a soft manual toothbrush Product Features High-speed oscillating movements gently remove even heavy plaque buildup and stains FlexiSoft+ bristles bend for gentle brushing Long Interdental Tip bristles clean deep between teeth Indicator+ bristles signal when to replace brushhead Built-in timer helps ensure professionally recommended brushing time Water-resistant handle Compact charger 2-minute timer.