All! I have trouble using regular mouthpieces when sparring. Even the smaller, softer ones properly molded to my teeth are still too big and make me gag. My dentist says I have a "unique" anatomy (note to all - NEVER a good thing to hear from your dentist): my mouth is too small for a grownup and the mouth cavity narrows too steeply toward the back. This always causes issues when taking dental x-rays. So, any advice you could give me as to what mouthpieces I could use that would still protect my teeth when sparring but wouldn't cause me to feel like throwing up.