Title: Defective
Review: We have been using the Oral-B brushes for years - through at least three base units. This is the first time we have experienced problems with the brush heads. Two of the four quickly failed as described by others (the heads became so loose they no longer worked) and a third one sometimes pinches the cheek. I have noticed that some of the descriptions on the packages are in German first with English underneath.
Is this product review negative?