A novel dental implant system with an internal port for endoscopic closed sinus augmentation: a feasibility study in pigs.

PURPOSE: This study describes the use of an innovative dynamic implant valve approach (DIVA) for dental implant placement and sinus augmentation procedures. MATERIALS AND METHODS: The DIVA implant system was tested in vitro for leakage and mechanical fatigue. A closed sinus elevation procedure with a gel-type bone substitute was performed using the DIVA implant in a swine model (n = 6). Implants were placed and evaluated radiographically and histologically. RESULTS: Elevation of the maxillary sinus membrane and augmentation were performed in a simple, minimally invasive fashion. Histologic analyses demonstrated complete sealing of the DIVA implant and excellent osseointegration. CONCLUSION: The DIVA can be used as a simplified viable option for dental implantation and augmentation procedures. Hermetic sealing of this implant system, which features an inner screw, renders it safe.

Endoscopic intraoral plating of orbital floor fractures.

PURPOSE: This article describes a new endoscopic approach for orbital floor fractures, reduction, and fixation and reports the clinical results. PATIENTS AND METHODS: Ten patients who sustained either a comminuted or trap door orbital floor fracture were treated in 2 medical centers following the same surgical protocol. The indications for orbital reconstruction were limited eye movement, diplopia, and significant enophthalmos. The new approach is discussed in detail. RESULTS: All patients healed uneventfully. No major complications were noted in the postoperative period, and good functional and esthetic results were obtained. CONCLUSIONS: Our results demonstrate that endoscopic intraoral plating is a safe and effective procedure for treating orbital floor fractures.