Both AS and ASC abutments achieved acceptable clinical short-term outcomes for maxillary anterior implant restorations, with 100% observed implant survival rates and no statistically significant differences in survival or peri-implant bone level stability. The AS group exhibited potential advantages in soft-tissue contour and buccal bone thickness preservation. Although the incidence of mechanical complications was higher in the AS group clinically, the difference did not reach statistical significance, warranting further validation.
Ding et al. (Tue,) studied this question.