Implant Placement Protocols Research Articles

The management of a severely resorbed edentulous maxilla using a bone graft and a CAD/CAM-guided immediately loaded definitive implant prosthesis: A clinical report

Functional reconstruction of an occlusion with severe residual ridge resorption is a clinical challenge. Removable prostheses are unsuccessful in situations with severe bone resorption. A patient with an edentulous maxilla received bone grafts from the anterior iliac crest to augment the maxillary alveolar residual ridges. The maxilla underwent bilateral sinus lift in the posterior area and onlay bone graft on the anterior maxilla using platelet-rich plasma. Eight endosseous implants were placed using a CAD/CAM surgical template approximately 6 months after the bone augmentation procedure. A prefabricated definitive implant-supported fixed complete denture was connected immediately after implant placement using a CAD/CAM-guided surgical implant placement protocol.

Relationship of vertical and horizontal crestal bone levels on implants and teeth to papilla

Statement of the Problem: For single tooth implant restorations, the presence of papilla is essential for the esthetic outcome of the treatment. Prior publications imply that there may be a critical distance from contact point to bone and also the horizontal relationship of the implant to the adjacent tooth or another implant. Prior literature does not compare the papilla/bone levels in a prospective series of implants placed in a delayed two stage protocol (2SP) or with an immediate provisionalization (non-functional crown placed immediately after implant placement) protocol (IPP). The hypothesis of this clinical report is that there is no difference between 2SP and IPP for papilla preservation after at least two years of restoration, based on the vertical and horizontal relationships of the contact point to implant or to the adjacent tooth.