Dr. Greising received his Doctor of Dental Surgery degree from The University of Illinois College of Dentistry in 1990. He completed an Advanced Education in General Dentistry program at Sheppard Air Force Base in 1991.
Dr. Greising completed his specialty training in periodontics in 1997. He earned his Master of Science in Periodontics from The University of Texas Health Sciences Center at San Antonio and a Certificate in Periodontics from Wilford Hall Medical Center, Lackland Air Force Base, Texas. Dr. Greising successfully challenged the American Board of Periodontology, becoming a Diplomate in 1998.
Dr. Greising served honorably in the United States Air Force for ten years. He received the Meritorious Service Medal, the Commendation Medal, and he was recognized as the Air Mobility Command Junior Dental Officer of the Year.
Memberships in professional organizations include the American Academy of Periodontology, American Board of Periodontology, American Dental Association, Midwest Society of Periodontists, Illinois Society of Periodontists, Illinois State Dental Society, Chicago Dental Society, and Omicron Kappa Upsilon National Honor Society. Dr. Greising has served in all offices of the Northwest Suburban Branch of the Chicago Dental Society, culminating in the office of President from 2007-2008. He is also an Associate Member of the McHenry County Dental Society.
Dr. Greising previously served on the teaching staff for the Advanced Education in General Dentistry program at Offutt Air Force Base, and he was a volunteer instructor at The University of Nebraska Medical Center Post-Graduate Periodontics Program. Dr. Greising has served as the dental surgeon for the Chicago Wolves of the AHL since the 2011-2012 season.