Hi. Thanks to Dr. Shapiro for introducing me to the DNA appliance. I've been doing research on it & other appliances like the Homeoblock & Biobloc. They seem so effective w/ expanding the upper jaw & palate. QUESTION: Do they also expand the lower patale/jaw? ABOUT ME: TOP= Some tipped in teeth, 1 small gap, no crowding, right half has teeth higher than left half, overjet, overbite. BOTTOM: Crowding, posterior teeth all tipped in & curve down. PICS: Impressions from someone practicing on me.