You may be correct, but there is another model whereby the damage to the nerve cells is done by the build up of the plaque. Removing the plaque does not necessa

You may be correct, but there is another model whereby the damage to the nerve cells is done by the build up of the plaque. Removing the plaque does not necessarily repair the damage. I picture it as a clog in a pipe. The clog is large and strong enough to break the wall of the pipe. You can remove the clog, but you've still got a break in the pipe that was not repaired.