Abstract: Objective The aim of this study was to evaluate the esthetic outcome of single maxillary incisor after delayed implant placement with alveolar ridge preservation, with index of pink and white esthetic scores. Methods Atotal of 9 cases treated from March 2006 to December 2014 were included in this study, each of which had one central maxillary incisor extracted followed by alveolar ridge preservation. The mean follow-up was 7.7 year, and all the data was gathered retrospectively over 4 years .The implants were placed after a healing period of 3~6 months, and the crowns were inserted 3~4 months after surgery. The assessment was performed using digital photographs presenting corresponding clinical situation with Pink Esthetic score(PES) and White esthetic score(WES). Results All the 9 implants were osseointegrated. The mean total PES/WES was (16.56±1.34) (range: 15 to 19). The mean PES was (7.78±1.13)(range: 6 to 9), the mesial papilla had the highest mean score(1.89±0.31), but root convexity/soft tissue color and texture had the lowest mean score(1.11±0.57), mean scores for the facial mucosa curvature and the distal papilla were the same as 1.56±0.50. mean scores for WES was (8.78±0.63)(range: 8 to 10). Conclusion Delayed implant placement with alveolar ridge preservation is an effective technique in achieving satisfactory esthetic Results of maxillary incisor.

Key words: extraction site preservation, implant aesthetics, pink esthetic score(PES), white esthetic score(WES)