Recent research has emphasized the importance of good oral care-it goes beyond teeth and gums and can impact the whole body. So if you've decided it's time to get serious, take a look at the Advance 4100, Sonicare's most affordable brush. It's an ideal introduction to Sonicare's superior technology and it features the standard Sonicare functions, Smartimer and Easy-start.
This is an excerpt of a user review for the Sonicare Advance 4100 taken from ePinions.com:
If you don't have a sonic type toothbrush … GET ONE!!! I can, without hesitation, recommend the Sonicare Advance Power Toothbrush 4100 as a fantastic entry level unit. Its worth every penny of the purchase price and you may even find it improves not only the look of your teeth, but your actual dental health as well. If your budget allows, go ahead and splurge for one of the more advanced models … but if not, the 4100 is a great sonic toothbrush!
Replace Brush Heads Regularly It's clinically proven that a regularly replaced brush head removes plaque better than one used for longer than 6 months. Order them early!