Dr. Jengo had just set up practice in Gardner, MA. I had just retired from the United States Navy and did not get my dental work done prior to discharge. The VA paid to have my dental work done. Dr. Jengo completed that work in 1978- he told me t that if it was done properly, the bridge would last as long as your real teeth. It is now 2014 and that same bridge is still in my mouth as good as it was the day it was installed. Other dentists in different states over the years did not concur with Dr. Jengo's statement- but I can tell you that it has stood the test of time with NOT ONE PROBLEM TO DATE. Thanks Doc... Ron Olesen