Fig. 4From: Case report on managing incomplete bone formation after bilateral sinus augmentation using a palatal approach and a dilating balloon techniqueRight sinus about 12 months after first grafting procedure. Cone beam CT imaging shows little suitable bone at implant site, but grafted bone displaced distal to site. Bone hydroxyapatite particles were added as radiographic marker to the graft material for the first sinus augmentation procedure and are still visible as radiopaque specksBack to article page