Should I use an electric toothbrush?
Should I use an electric toothbrush?
user
Hm, I don’t know much about those...  Does it charge by plugging it into a wall, or are batteries required?
assistant
batteries
user
Do you use a lot of toothpaste?
assistant
not really
user
If it's powered by batteries, and the battery doesn't last very long, you might need to buy more batteries to make it worth it.  Did you know there are some electric toothbrushes that can be recharged using a USB cord?
assistant
okay but are they good for my teeth?
user