1. A method comprising: receiving, by a processing device, a plurality of intraoral images of a dental site during an intraoral scan session; determining, by the processing device, that a first intraoral image of the plurality of intraoral images does not satisfy a registration criterion with regards to any other intraoral oral image of the plurality of intraoral images; determining, by the processing device, that a historical template of the dental site is existent, wherein the historical template is a virtual model of the dental site as generated from additional intraoral images taken during a previous intraoral scan session; registering, by the processing device, the first intraoral image to one or more remaining intraoral images of the plurality of intraoral images in a three-dimensional space according to the historical template, wherein the first intraoral image is associated with a first region of the dental site that does not overlap with a second region of the dental site associated with the one or more remaining intraoral images; generating a first surface of the first region based on the first intraoral image; generating a second surface of the second region based on the one or more remaining intraoral images; and displaying, by the processing device, relative positions and orientations of the first surface and the second surface, wherein the historical template is not displayed.