I get them cleaned once every six months, but, due to a change in my mouth, my hygienist suggested I start getting them cleaned every four months. I think it might be because of the one tooth in the back that has a crown that crumbled a little bit, leaving empty spaces in my gums. I don't remember. We'll see if they have their sh*t together and actually start scheduling me every four months instead of six--I'm not about to remind them.