To define the ideal material for frontal sinus obliteration remains controversial. Sinus obliteration with autogenous bone is an effective technique because its biological properties: it undergoes a fast revascularization acting as an active scaffold for bone healing. Cancellous bone is maybe the best option, but it implies additional donor site morbidity. Bone dust harvesting from the skull surface produces no sequelae but its availability may be limited. Many efforts have been made to overcome those drawbacks, looking for an ideal bone substitute. Demineralized Bone Matrix (DBX) is a commercially available product composed of demineralized bone particles reduced after proper processing of human bone in combination with sodium hyaluronate. It generates an osteoconductive surface and it is also a source of osteoinductive factors. Radiological follow-up using computed tomography (CT) can be performed in a very reliable way, since bone density in the radiological image facilitates the early detection of possible complications. We present our prospective clinical series of postraumatic frontal sinus obliteration with a mixture of calvarial bone chips and DBX shell, with a long-term radiological monitoring. The technique demonstrates to be effective, reliable, stable over time and associated with minimal morbidity.

Conflict of interest: None declared.