Abstract: Objective: To investigate aesthetic effect of minimally invasive extraction and immediate implant placement combined with inducing gingival formation for maxillary central incisors. Methods: 16 patients with hopeless maxillary central incisors were enrolled in the research form May 2014 to Dec 2016.The 18 maxillary central incisors were extracted without flap reflection and 18 implants were replaced immediately. Gingival contour was induced using implant-supported temporary crowns from 2.5 months to 3 months after implantation. Permanent prostheses were delivered 6 months later. The peri-implant bone level, the pink esthetic score and subjective satisfaction were evaluated 6 months after the permanent restoration. Results: 18 implants osseointegrated successfully. The labial bone thickness was(2.13±0.78)mm, while mesial and distal marginal bone resorption were (0.21±0.54) mm and (0.24±0.41) mm. PES was (7.78±1.11) after loading for 6 months. The patient’s satisfaction was 97.5%. Conclusion: Minimally invasive extraction and immediate implant placement combined with inducing gingival formation for maxillary central incisors achieves great aesthetic effects. The keys to success are minimally invasive extraction, labial bone thickness, mesial and distal marginal bone reservation and inducing gingival formation.

Key words: Minimally invasive extraction , Immediate implant replacement, Inducing gingival formation