You should expect about 3 to five years (possibly 7 years) of use from the composite and as many as 20 years or longer from an amalgam restoration. Actually a well-cared-for amalgam filling can last a lifetime, so the expensiveness of the filling really becomes a minor consideration.
This shows how well the kidneys are performing. In a normal healthy person the GFR stays close to the same value all of the time. The test is done by taking blood from a person and sending it to a laboratory. Normal values are between 90ml/min and 110ml/min.
2013-03-06 15:46. Glomerular filtration rate (GFR) is an indication of how much damage has been done to the kidneys and determine the stage of Kidney Disease. The earlier kidney disease is detected, the better chances of slowing progression of disease and restoring renal function.