Randomized controlled trial on the efficacy of a custom‐made, fully guided implant system for flapless crestal sinus floor elevation: Accuracy and patient‐reported outcomes

To compare fully guided flapless implant surgery using a light-cured surgical guide (FG group) with partially guided open flap surgery (PG group) in the posterior maxilla when performing simultaneous sinus floor elevation in terms of the accuracy, time requirements, and patient/clinician-reported outcomes (PROMs and CROMs).