Description : 38134111 Change Your Brush Every 3 Months For A 30% Better Clean! Clinical Research Proves That A New Toothbrush Can Remove 30% More Plaque Than One 3 Months Old. New Comfort Grip - Ergonomically Designed Handle For Comfort and Control. End-Rounded Bristles - Carefully Polished End-Rounded Bristles Are Gentle On Your Teeth and Gums. Blue Indicator Bristles Fade Halfway So You Know When to Replace Your Brush. At Oral B We Care For Your Oral Health By Developing Innovative Products That Are Trusted By Dental Professionals Worldwide.