my dentist told me to use a waterpik because I have 19 caps in my mouth 15 years or more the first stope working the I bought the wp-100 and I am very happy that I did
I purchased this item becaused my periodontist suggested I do. I do have a problem with the on/off button on the wand. It continues to stick when I am using it. I have to tap it a number of times to get it to work.