A case of an implant treatment involving sinus floor elevation and guided bone regeneration without bone substitutes

Abstract

One of the problems limiting the indications for implants is the problem of insufficient bone mass in the defect. There are two types of bone defects: vertical and horizontal. The bone deficiencies are often caused by bone resorption associated with dental disease, and by anatomical morphology, such as the lowering of the maxillary sinus floor. Autologous bone grafting, sometimes in combination with grafting with bone allograft is employed as preparation for implant treatment involving the bone defect. The choice of osteogenesis technique varies according to the extent, morphology, situation and location of the bone defect. Since the surgical procedure using bone allograft involves bone substitutes, it is necessary to consider that removal of the bone substitute material during recovery treatment will be difficult if any unexpected post-infection occurs. For the maxillary molar defect with poor vertical and horizontal bone mass, we performed implant treatment using maxillary sinus elevation and guided bone regeneration (GBR) without bone substitutes.