My preferred brush
I don't know if dentists prefer Oral B electric brushes, but I do.  I have needed to replace previous models because rechargeable battery goes after 3 years or so.  I've never bought the expensive ones.  These cheaper models seem to work just fine.  Pros = charge lasts a week or more, charger is petite and easily tucks into a drawer when not in use or it can be mounted to a wall.  Cons = still think the brush heads themselves are expensive.  Look for sales.
Rating: 5 stars