Coronal ridge augmentation in the absence of bilateral bony plates around a pathologically denuded implant surface

Guided bone regeneration via an osteopromotive barrier is indicated in diff erent alveolar bone deficiencies and in periimplant bone destruction around pathologically denuded exposed implants. Regeneration of the osseous volum e is determined by understanding the biologic behavior response of hard and soft tissues in guided tissue regeneration procedures. Consequently, a met iculous surgical approach is mandatory to preserve wound healing cascades a nd tissue stability. However, hard tissue augmentation in the nonsupported coronal direction has been unpredictable. A case report is presented in whi ch a severely defected ridge around a pathologically exposed functional imp lant combined with a destructive extraction site was restored and regenerat ed. Bovine bone mineral particles (Bio-Oss) served as the graft material an d were followed by an expanded polytetrafluoroethylene (e-PTFE) occlusive m embrane as a bilateral regenerative tissue guide. Subsequently, 2 additiona l implants were placed in the augmented hard tissue ridge.