It only reached the bottom 3/4 of my front teeth. I do have longer front teeth, but for me, this makes it unusable.I wish it came with foam toothpaste , because I made the mistake of using regular (which makes this super annoying to clean ) I found if you brush your teeth with a traditional toothbrush first , and don’t spit out the foam , then use this device as a second process , it cleans really really well. The blu light has made a difference in the whitening of my teeth . I like that it doesn’t have to be plugged in to use , and you can basically do anything while it’s going . It’s great for in between brushes during the day , but again... get some foam toothpaste .This toothbrush was the coolest toothbrush I've ever used! I was looking for something that made me want to brush more and I was able to brush easily. I've never been good at brushing multiple times a day, but this toothbrush makes it so easy I've been keeping up with brushing twice a day ever since I got it! I've already noticed a difference in the whitening of my teeth and my gums seem so much healthier. I'm very excited about this toothbrush I would recommend it to anyone! Going to order one for my husband as well!Perfect! I just wish a stand came with it!Brush was good for in between cleaning but not for deep cleaningI purchased this for my son (11 yrs) who we can call a minimalist when it comes to toothbrushing. His 5 second flourish around his mouth never quite seemed to do the job. We have tried oral b's and Sonicares with no success. He agreed to try this and has been using it regularly. I don't believe it's as thorough as a traditional toothbrush would be, but is certainly better than what was happening before.The newer attachment definitely reaches the back teeth nicely. I like the different settings!