United States Electric Toothbrush Market Assessment, By Product Type [Oscillating-rotary Toothbrush, Sonic Toothbrush], By Power Source [Battery-Powered, Rechargeable], By Brush Head Type [Standard Brush Head, Sensitive Brush Head], By End-user [Adults, Children], By Distribution Channel [Online Channel, Supermarket/Hypermarket, Pharmacies/Drug Stores, Convenience and Departmental Stores, Others], By Region, Opportunities, and Forecast, 2017-2031F