The most powerful toothbrush on this site is the X3 Sonic Electric Toothbrush. This kit contains one holder unit and four brush heads. The brush heads consist of high quality file bristles preventing gum damage. The high powered motor will ensure that teeth are ultra clean every single time this toothbrush is used.
How this works is by operating the powerful motors to create very high frequency vibrations. This action produce thousands of micro bubbles which create strong flushing action that takes place on the surface of the teeth. This action enables bubbles penetration into the cavities and gaps in the teeth. Food residue lodged in the gaps gets flush them out very efficiently. Studies of sonic cleaning article are here
The X3 Sonic Electric Toothbrush includes a powerful 500 mAh battery. This provides high frequency strong vibrations for effective teeth cleaning. The no frills design of the X3 extends the operating time of the toothbrush.
Another alternative is the rotary version also available here.
Includes 90 day one-for-one exchange warranty.
Product Demo Video: