Development of radiolucent biodegradable material for sinus floor bone augmentation

本研究的目的是研制一种能观察上颌窦骨增量过程中新骨形成的材料。在上颌后牙颊侧开骨窗，抬高上颌窦膜。将生物可吸收板（fixorb）放置在窦膜下，并固定在骨窗附近的骨上。术后6个月，放射学观察骨形成情况。我们对10例患者的13个部位的19个种植体进行了放射学检查，平均年龄62.2岁，这些患者接受了无移植材料的鼻窦提升术。在所有病例中，种植体周围均形成了骨，未观察到鼻窦炎。当骨表面产生空隙时，骨就形成了。因此，我们开发了一种新的装置，我们用它来抬高骨膜，在兔子的头上产生新的骨头。此外，当我们用硅膜完全覆盖这个装置时，所有的空间都充满了新骨。我们将这种新方法命名为“可扩展GBR”。

The purpose of the present study was to develop a material, with which we can observe new bone formation in maxillary sinus bone augmentation. Bony window at the buccal side of posterior maxillawas opened and maxillary sinus membrane was elevated. The bio-resorbable plate (fixorb) was placedunder the sinus membrane and fixed to the bone close to the bony window. Six months after the surgerybone formation was radiologically observed. We radiologically examined 19 implants at 13 sites of 10patients, average age 62.2 years old, who received sinus lift without graft material. In all cases bone wasformed around the implants and sinusitis was not observed. Bone is formed when space is produced onthe bone surface. Thus, we developed a new device, with which we elevated the periosteum, producingnew bone on the head of the rabbit. Furthermore, when we completely covered this device with a siliconmembrane, all the space was filled with new bone. We named this new method "expansible GBR".