Takayama A, Moroi A, Saito Y, et al. Evaluation of space-maintaining sinus membrane using the absorbable screws in sinus lifting bone augmentation. Implant Dent. 2019; 28: 28-38. Since the discontinuation of the publication of Implant Dentistry this article has been retracted owing to errors in results that invalidates the conclusion. See Retraction notice for details.