In (b)(5) deleted dental crowns, caps and inlays from definition of medicines"; in (c)(1) added crowns, caps, inlays and other dental prosthetic materials and devices to exclusions from term medicines"; in (c)(2) added orthodontic appliances to exclusions from term medicines"; in (i) provided that orthotic and prosthetic devices shall be deemed to be dispensed on prescription; in (k) exempted r