As long as its a toothbrush...something with bristles and soft enough to clean then teeth its ok. With new innovatives like diamond shapes and zigzag and whatever it does not make any difference. It only depends on the users. If you use the toothbrush with soft hands and a proper tooth paste..it will very well clean your teeth. You also have to replace your tooth brush after every 2 months. Close up brush if compared to the other brands is reputed...so we can say that it must have been made under hygenic conditions and also prescribed by various dentists. So using this brush wont actually harm.. but its a bit silly to buy toothbrushes on its efficiency because toothbrush cannot have any new techniques..