Guided Bone Regeneration for Fenestration Defects in Dental Implants

Guided bone regeneration has been applied in implant dentistry for increasing the widthand height of the alveolar ridge in areas with insufficient bone. Various materials and techniqueshave been used for this purpose. It refers to a surgical procedure by which utilizing amechanical barrier to create a secluded space around the defect to permit bone regenerationwithout the competition of other tissues. This report presents a case with buccal fenestrationson maxillary implant sites observed during a surgical procedure. An allograft and anon-resorbable membrane were concomitantly used to increase the width of the alveolarridge. Hard tissue regeneration was evident clinically. The implants were restored for functioningand followed for 2 years. Factors affecting outcomes are also discussed. Membranestability and the space-making effect remain the keys to success.