Demineralized laminar bone sheets were utilized as membranes to affect guided bone regeneration around five implants in two patients and to perform a ridge augmentation procedure in one patient. In all cases, significant regeneration of hard tissues occurred, and no complications were encountered. The regenerated hard tissues have been in function for up to 32 months with no clinical signs of breakdown. Schlagwörter: guided bone regeneration, laminar bone sheet, implant