Researchers can't agree whether electric toothbrushes are more effective at removing plaque than manual toothbrushes, or, which type of electric toothbrush is best:

This 1997 paper says electric toothbrushes are better; this 2011 paper says they aren't;

This 1996 paper says that rotating brushes are more effective than sonic brushes; yet

This 2011 paper says that sonic brushes are more effective than ionic brushes; however

This 2012 paper says that ionic brushes are most effective.

Unless your dentist has recommended a toothbrush for its health benefits, it's safe to assume that marketing claims are puffery. That said, there are ergonomic reasons for using an electric toothbrush.

"People who have dexterity problems—like the elderly, people with disabilities, or children—or those who have dental appliances, like braces, may find a powered toothbrush easier to use," according to the American Dental Association.

How Much Does a Good Electric Toothbrush Cost?

A good electric toothbrush (with verified, above-average reviews) costs approximately $29, according to a 12-month analysis of price trends. Those same electric toothbrushes cost around $19 while on sale: an average discount of 34%. This data also suggests that Amazon is the best place to buy an electric toothbrush online.

Here are the best inexpensive electric toothbrushes for the money. Remember: Always check the price and availability of replacement brush heads before buying an electric toothbrush.