Implantoprosthetic rehabilitation in the presence of insufficient bone volume requires the management of a compromised condition while respecting the principles of prosthetically guided rehabilitation. The 64-year-old patient, healthy and non-smoker, was referred for an abscess in correspondence of a cemented bridge on natural abutment and implants, from 2.3 to 2.5 with an extending element. The clinical and radiographic examination showed non-treatable perimplantitis on both implants, severe bone atrophy and asymptomatic mucocele in the ipsilateral sinus. The patient underwent sinus augmentation and vertical crest augmentation using preserved collagen-preserved cortico-cancellous granules in combination with a pericardial membrane. At 6 months clinical and CBCT analysis revealed sufficient volume to insert 4 implants.
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