1, 2 It contains all normal layers of the intestinal wall and, in approximately 50 percent of cases, contains tissue from other sites (ectopic tissue). 2 This ectopic, or heterotopic, tissue can often be the cause of complications occurring in Meckel's diverticulum. Meckel's diverticulum occurs in about 2 percent of the population, making it the most prevalent congenital abnormality of the gastrointestinal tract.
A common helium-filled latex balloon lasts from about 12 hours up to two days. However, the size, type of material, and presence of a sealant all affect the balloon's lifespan. The treatment and level of activity to which the balloon is subjected also affects how long it floats.
The Average Amalgam Filling Lasts About 12 Years. There have been quite a few studies that have tried to determine how long the âaverageâ amalgam filling will last. One such study involved a single dentist in Belgium. The study followed 722 amalgam fillings that this dentist had placed between 1982 and 1999.