Abstract
This case series aimed to investigate the initial-phase bone remodeling during implant wound healing and to discuss the possible contributing factors. A total of 11 implants with polished collars were placed in premaxillary regions via flapless approach with the aid of computer technology. After 15 months of follow-up, the results suggested that the presence of polished collars triggered bone resorption via a bone remodeling mechanism. The overall vertical crestal resorption was 0.78 ± 0.46 mm on average. This initial-phase bone remodeling primarily occurred within the first 3 months postoperatively. The slightly exposed polished collar may not worsen crestal bone level.
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