Statistically most important factor in success assessment in root coverage is the amount of single root coverage in millimeters or percentages. However, in terms of aesthetics, the percentage of teeth with complete root coverage seems more important and should be considered as a prerequisite for success. Furthermore, comparative data have been based on a central vertical linear measurement taken in mm in the area of recession. This measurement cannot fully estimate the aesthetic success of the procedure because of two reasons: a single measurement does not accurately reflect the shape and the area of residual recession; the visual aspect of the graft and surrounding tissues is not taken into account. Thus, success criteria should not only be based upon the amount of root coverage but also upon the cosmetic integration of the operated zone within the mouth. Attention needs to be paid to additional factors. In a comparative study on root coverage, we attempted to evaluate aesthetic results (71). Impressions and photographs of the recessions were made preoperatively and 6 months later. Each photograph was magnified on a screen. The photographs and the impressions were examined and compared by two independent examiners who were not familiar with the given treatment. The evaluation of the aesthetic results was scored by using a three-step scale: good, moderate or poor. The agreement among examiners was assessed by a kappa test. The examiners were asked to score an overall impression of the surrounding tissues, not just the amount of root surface that was covered. Table 7 indicates the four relevant factors taken into account by the panel of examiners to score a global aesthetic impression. Hopefully, a system like this, one and the same and universally used, can soon be agreed upon and regularly included in clinical studies.