ST. PAUL, Minn.--(BUSINESS WIRE)--Restore Medical, Inc. (NASDAQ:REST), developer of the innovative Pillar® Palatal Implant System, today announced preliminary net sales for the three months ended March 31, 2008. The Pillar Palatal Implant System is a proven and effective in-office treatment for people suffering from snoring and mild to moderate obstructive sleep apnea that improves the lifestyles of patients and their bed partners by helping them to sleep better, feel better and live better.