In connection with the other thread about brushing...

[monk3y]

How often do you change your toothbrush or the head of your toothbrush?

I change it every 1 1/2 months... I really don't know what is recommended or anything.

 

[bradruth]

Usually every 2 months or so. I think they recommend at least every 3, IIRC.

 

[cronos]

on average about 2-3 months.
i always use the one with the 'indicator'

 

[loup garou]

Every 6 months, as Sonicare recommends.