The present invention pertains to a drill sleeve (1) for a dental drill (70). The drill sleeve (1) is essentially hollow cylindrical and has a circular inner surface (10) for guiding the dental drill (70) and an outer surface (15) intended to be inserted into a template (50). The drill sleeve (1) is characterized in that the outer surface (15) of the drill sleeve (1) comprises at least one longitudinal flattened area (20).
