Could be that it comes up faster, but not much. However MDMA is seriously bad for your teeth, don't let it dissolve in your mouth. If you want a just as fast onset but no teeth damage, grind up your pills/crystals and put whatever dose you want to take in a cigarette rolling paper and swallow. The paper will dissolve almost instantly, releasing the already crushed up drugs, which makes the onset faster and more intense. It's heavier on your stomach though, but that's better than teeth damage