Vertical soft tissue augmentation
Vertical mucosal tissue thickness was shown to be the factor having impact on bone stability. It was showed that platform switching does not reduce crestal bone loss, if soft tissues at the implant placement are thin. It is suggested that thin tissues might be thickened during implant placement, thus reducing bone resorption. Special guidelines how to work in vertical thin mucosal tissues are necessary. This can be carried out simultaneously with implant placement using an autograft, a xenograft or a dermis-derived allograft. Collagen-matrix xenografts result in less augment of volume, since some recession is likely to occur, however bone stability is improved.