Abstract
The purpose of this clinical study was to evaluate, through clinical and radiographic parameters, the 2-year implant survival and success rates of single, narrow, immediately loaded implants (3.1-mm diameter) placed in fresh extraction sockets or healed sites in the anterior region. A total of 16 patients were treated with 16 narrow single implants in fresh extraction sockets and healed sites, and restored immediately with temporary crowns. After 3 months, the implants were finally restored with screw-retained or cemented lithium disilicate crowns. Implant success and survival rates were both 100% due to stable marginal bone levels and shallow probing pocket depths after 2 years of follow-up. Within the limits of this clinical study, narrow 3.1-mm dental implants can be used successfully as a minimally invasive alternative in healed sites with a thin bone crest and in the presence of a reduced interdental space. Provided that stability of soft and hard peri-implant tissues were obtained in postextraction sites of mandibular incisors and maxillary lateral incisors with immediate provisional restoration, the 2-year results can be successfully maintained over time.
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