Have the Megasonex now for almost 8 months. Am a floss objectors and use them usually only a few days before the next dentist appointment. Go every 3-4 months for tooth cleaning, as I am periodontitis risk and already 2 periodontitis treatments have behind me. I was yesterday morning there again and can say this is the teeth cleaning for the last two dates always less bloody and painful. The appointment yesterday almost pleasant and the dentist has told in the later review, these are the teeth in good condition and no inflammation can be seen. For me, a clear proof that helps the toothbrush. But you have to get used to the brush. Had the Megasonex ever ordered 1.5 years ago and returned then "felt" for the weak vibration and unusual type of plaster after a few days. One is the normal electric toothbrushes easy but a stronger "Schruben" used and have to get used properly with the Megasonex first. If you look at but only once accustomed to then want to anything else. I also noticed how many leftovers brings this ultrasonic toothbrush from the interdental spaces. Property me to the Emmi-Dent Fresh toothpaste ordered and find the taste very pleasant. However, I mostly use normal toothpaste, despite what some people think the opposite has almost the same effect. I am very pleased with the Megasonex and would recommend it!