this review title is: very abrasive made for a person with a mouth of steel and the content is: i wanted an inexpensive sonicare but the brushing is so extreme that it pushed back my lower gum it went back but this is the most abrasive tooth brush i have encountered i do not think i have sensitive teeth or gums but my teeth felt like i was wearing down my gums after a few weeks i do not recommend this to anyone.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.