Shi JY, et al. – The long–term survival, complications, peri–implant conditions, marginal bone loss, and patient satisfaction of fixed dental prostheses supported by narrow diameter implants (NDIs) in the posterior jaws were evaluated in this retrospective cohort study. The findings suggested that narrow diameter implants could be a predictable treatment option in the long term, however, high survival rates, high patient satisfaction, acceptable complication rates and marginal bone loss could be achieved.