A scanning structure having at least one surface with a shape adapted to conform to a portion of a craniofacial space is described. The scanning structure includes at least one surface object, which is at least partly identifiable from a first set of data, and where a first coordinate is identifiable based on the surface object. The scanning structure includes at least one volume object, which is at least partly identifiable from a second set of data, and where a second coordinate is identifiable based on the volume object. The surface object can be arranged in relation to the at least one volume object such that the first coordinate and the second coordinate have a pre-defined relationship to each other.
