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.
Glomerular filtration rate (GFR) indicates how well the kidneys are working. The higher GFR, the better kidneys function. However, once you are tested out low GFR, for example your GFR level is 5ml/min, you must wonder âwhat does low GFR meanâ. Generally, our GFR level ranges between 90 and 120ml/min, but these values may change with age.