A system for assisting a gum disease examination provides indication of an oral area to be examined during an examination of the gums of a subject under diagnosis. Historical examination data is used in respect of a set of subjects. Using this data, a first oral area to be examined is determined, and based on the historical examination data and the measurement for any previously examined oral areas during the examination, a next oral area to be examined is also determined. In this way, a sequence of oral areas to be examined is determined by the system, with the aim of making the examination as quick as possible, by obtaining a diagnosis after as few measurements as possible (when there is a positive diagnosis to be made).