Rationale for Implant Site Preservation With Absorbable Bone Scaffolds

Minimizing alveolar ridge atrophy after tooth removal is crucial for the preservation of the alveolar ridge dimensions for future implant placement and subsequent prosthetic rehabilitation. Methods such as bone grafting have been used extensively but generally focus mainly on maintenance of bone volume and less so on bone quality. To achieve enhanced bone quality, it is important that residual bone graft material particles get replaced by new vital bone. This article describes the rationale for and a technique demonstrating implant site preservation with absorbable bone scaffolding to not only maintain alveolar bone anatomy but also improve bone quality for the long-term stability and success of implant therapy.

Lasso Guided Bone Regeneration Technique for the Management of Implant Fenestration Defects.

Implant placement in the anterior maxilla provides many unique challenges to the clinician, including esthetics and potential alveolar bone anatomic variations. The depth of the implant osteotomy is a key consideration to avoid a fenestration defect, which could necessitate subsequent treatment. Treatment options for such defects include bone augmentation with or without implantoplasty. Bone augmentation for the correction of dehiscence or fenestration defects on restored dental implants can be difficult due to the grafted site being close to the margin of the flap, thereby favoring premature bone graft and/or barrier membrane exposure. This article describes the management of an implant fenestration defect using lasso guided bone regeneration, a contemporary technique for bone augmentation and alveolar reconstruction designed to maximize predictability and tissue quality by combining fast-absorbing bone replacement materials with long-lasting barrier membranes and stabilization with internal periosteal sutures.