They are quick, but in being quick, the are not gentle as their name states! when you have tight contacts between teeth & you mention it to the hygienist, but she still tries to yank out the floss and states does it feel like your teeth were coming out? not cool! then proceeds to rising my mouth out, but in reality is really washing my face- so strange. The actual dentist comes in and prods around and after a day & 1/2 my gums are still extremely sore and sensitive. I so wish they would remember that their name is Gentle. Yet they are so not!