I had a des placed in my lad 30 days ago. how long does it take for the endothilial cells to cover the stent cage in this type of stent?

Atleast 1 year: In order for struts of stent to be fully endothelialised and before one can even consider altering dual amtiplatelet therapy, a full 12 months ought to pass. There are other features such as lesion length, and angulation that may warrant even longer DAPT - discuss with ur interventional cardiologist. Data suggests outcome curves continue to diverge, so benefit upto 18 months post DES for dapt.