sistem 4dCaries staging and activity assessment is the second essential step in the 4D-cycle for effective and personalised care. It builds on the knowledge acquired from the 1 st D. The aim is to4D d ržavni koordinatni sistem. 4D national coordinate system . Klemen Medved, Sandi Berk, Oskar Sterle, Bojan Stopar. POVZETEK . Državni koordinatni sistem predstavlja stabilno, točno in