A line encircling a tooth and designating its greatest circumference at a selected axial position determined by a dental surveyor; a line encircling a body designating its greatest circumference in a specified plane.
A line encircling a structure, designating its greatest diameter in a specified plane. In dentistry, the term refers to the largest circumferential measurement around a tooth. The height of contour must be maintained during restoration of a tooth to maintain the normal flow of food over the tooth.